./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH --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 64bit --witnessprinter.graph.data.programhash 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:50:16,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:50:16,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:50:16,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:50:16,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:50:16,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:50:16,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:50:17,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:50:17,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:50:17,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:50:17,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:50:17,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:50:17,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:50:17,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:50:17,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:50:17,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:50:17,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:50:17,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:50:17,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:50:17,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:50:17,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:50:17,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:50:17,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:50:17,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:50:17,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:50:17,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:50:17,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:50:17,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:50:17,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:50:17,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:50:17,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:50:17,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:50:17,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:50:17,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:50:17,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:50:17,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:50:17,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:50:17,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:50:17,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:50:17,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:50:17,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:50:17,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-11-03 03:50:17,094 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:50:17,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:50:17,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:50:17,095 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:50:17,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:50:17,095 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:50:17,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:50:17,096 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:50:17,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:50:17,096 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:50:17,096 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:50:17,097 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:50:17,097 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:50:17,097 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:50:17,097 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:50:17,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:50:17,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:50:17,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:50:17,099 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:50:17,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:50:17,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:50:17,099 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:50:17,100 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:50:17,100 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:50:17,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:50:17,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:50:17,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:50:17,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:50:17,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:50:17,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:17,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:50:17,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:50:17,102 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:50:17,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:50:17,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:50:17,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:50:17,103 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_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-11-03 03:50:17,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:50:17,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:50:17,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:50:17,417 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:50:17,418 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:50:17,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-03 03:50:17,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/c4fb55cd8/a4a8b29251094dea9b287a59681b30d3/FLAGa03c9349b [2021-11-03 03:50:18,139 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:50:18,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-03 03:50:18,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/c4fb55cd8/a4a8b29251094dea9b287a59681b30d3/FLAGa03c9349b [2021-11-03 03:50:18,322 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/c4fb55cd8/a4a8b29251094dea9b287a59681b30d3 [2021-11-03 03:50:18,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:50:18,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:50:18,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:18,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:50:18,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:50:18,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:18" (1/1) ... [2021-11-03 03:50:18,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39872bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:18, skipping insertion in model container [2021-11-03 03:50:18,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:18" (1/1) ... [2021-11-03 03:50:18,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:50:18,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:50:19,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:19,021 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) [2021-11-03 03:50:19,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c89fa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:19, skipping insertion in model container [2021-11-03 03:50:19,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:19,023 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:50:19,025 INFO L168 Benchmark]: Toolchain (without parser) took 697.18 ms. Allocated memory is still 117.4 MB. Free memory was 74.2 MB in the beginning and 82.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:19,026 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 117.4 MB. Free memory is still 93.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:50:19,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.50 ms. Allocated memory is still 117.4 MB. Free memory was 73.9 MB in the beginning and 82.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:50:19,028 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 117.4 MB. Free memory is still 93.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 691.50 ms. Allocated memory is still 117.4 MB. Free memory was 73.9 MB in the beginning and 82.4 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1162]: 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_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH --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 64bit --witnessprinter.graph.data.programhash 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:50:21,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:50:21,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:50:21,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:50:21,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:50:21,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:50:21,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:50:21,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:50:21,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:50:21,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:50:21,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:50:21,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:50:21,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:50:21,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:50:21,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:50:21,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:50:21,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:50:21,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:50:21,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:50:21,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:50:21,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:50:21,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:50:21,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:50:21,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:50:21,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:50:21,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:50:21,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:50:21,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:50:21,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:50:21,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:50:21,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:50:21,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:50:21,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:50:21,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:50:21,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:50:21,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:50:21,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:50:21,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:50:21,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:50:21,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:50:21,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:50:21,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-11-03 03:50:21,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:50:21,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:50:21,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:50:21,613 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:50:21,614 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:50:21,614 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:50:21,614 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:50:21,614 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:50:21,615 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:50:21,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 03:50:21,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 03:50:21,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:50:21,618 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:50:21,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:50:21,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:50:21,619 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 03:50:21,619 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 03:50:21,619 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 03:50:21,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:50:21,620 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:50:21,620 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:50:21,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:50:21,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:50:21,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:50:21,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:50:21,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:50:21,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:21,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:50:21,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:50:21,622 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:50:21,622 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:21,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:50:21,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:50:21,623 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_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90eaf2e76e590922119d90e478fc764e383193134f46d6fe59bc98f3ce7c6611 [2021-11-03 03:50:22,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:50:22,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:50:22,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:50:22,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:50:22,088 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:50:22,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-03 03:50:22,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/0074cea6d/3da4e2d0fa0047059340c891e1514a1a/FLAG8def397c4 [2021-11-03 03:50:22,936 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:50:22,937 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2021-11-03 03:50:22,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/0074cea6d/3da4e2d0fa0047059340c891e1514a1a/FLAG8def397c4 [2021-11-03 03:50:23,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/data/0074cea6d/3da4e2d0fa0047059340c891e1514a1a [2021-11-03 03:50:23,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:50:23,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:50:23,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:23,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:50:23,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:50:23,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:23" (1/1) ... [2021-11-03 03:50:23,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725426ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:23, skipping insertion in model container [2021-11-03 03:50:23,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:23" (1/1) ... [2021-11-03 03:50:23,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:50:23,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:50:23,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:23,900 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:50:23,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:50:23,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:24,003 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:50:24,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:50:24,186 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:50:24,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24 WrapperNode [2021-11-03 03:50:24,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:50:24,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:24,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:50:24,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:50:24,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:50:24,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:50:24,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:50:24,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:50:24,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:50:24,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:50:24,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:50:24,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:50:24,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (1/1) ... [2021-11-03 03:50:24,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:50:24,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:24,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:50:24,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:50:24,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:50:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:50:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:50:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 03:50:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:50:24,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:50:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-03 03:50:24,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:50:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-11-03 03:50:24,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:50:24,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:50:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:50:26,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:50:26,427 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-11-03 03:50:26,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:26 BoogieIcfgContainer [2021-11-03 03:50:26,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:50:26,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:50:26,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:50:26,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:50:26,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:23" (1/3) ... [2021-11-03 03:50:26,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bb3c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:26, skipping insertion in model container [2021-11-03 03:50:26,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:24" (2/3) ... [2021-11-03 03:50:26,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bb3c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:26, skipping insertion in model container [2021-11-03 03:50:26,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:26" (3/3) ... [2021-11-03 03:50:26,442 INFO L111 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2021-11-03 03:50:26,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:50:26,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 73 error locations. [2021-11-03 03:50:26,518 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:50:26,535 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 [2021-11-03 03:50:26,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2021-11-03 03:50:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 176 states, 102 states have (on average 1.9705882352941178) internal successors, (201), 175 states have internal predecessors, (201), 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) [2021-11-03 03:50:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:50:26,570 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:26,570 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:50:26,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-03 03:50:26,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:26,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967384937] [2021-11-03 03:50:26,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:26,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:26,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:26,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:26,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:50:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:26,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:50:26,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:26,858 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 [2021-11-03 03:50:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:26,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:26,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:26,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967384937] [2021-11-03 03:50:26,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967384937] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:26,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:26,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:50:26,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605610128] [2021-11-03 03:50:26,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:50:26,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:50:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:50:26,950 INFO L87 Difference]: Start difference. First operand has 176 states, 102 states have (on average 1.9705882352941178) internal successors, (201), 175 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-11-03 03:50:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:27,684 INFO L93 Difference]: Finished difference Result 190 states and 209 transitions. [2021-11-03 03:50:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:50:27,686 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 [2021-11-03 03:50:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:27,697 INFO L225 Difference]: With dead ends: 190 [2021-11-03 03:50:27,698 INFO L226 Difference]: Without dead ends: 188 [2021-11-03 03:50:27,699 INFO L786 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 [2021-11-03 03:50:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-03 03:50:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 172. [2021-11-03 03:50:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 101 states have (on average 1.881188118811881) internal successors, (190), 171 states have internal predecessors, (190), 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) [2021-11-03 03:50:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 190 transitions. [2021-11-03 03:50:27,746 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 190 transitions. Word has length 3 [2021-11-03 03:50:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:27,746 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 190 transitions. [2021-11-03 03:50:27,747 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) [2021-11-03 03:50:27,747 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 190 transitions. [2021-11-03 03:50:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 03:50:27,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:27,747 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 03:50:27,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:27,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:27,960 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-03 03:50:27,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:27,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193041306] [2021-11-03 03:50:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:27,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:27,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:27,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:27,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:50:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:28,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:50:28,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:28,133 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 [2021-11-03 03:50:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:28,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:28,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:28,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193041306] [2021-11-03 03:50:28,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193041306] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:28,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:28,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 03:50:28,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449725785] [2021-11-03 03:50:28,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:50:28,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:28,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:50:28,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:50:28,324 INFO L87 Difference]: Start difference. First operand 172 states and 190 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) [2021-11-03 03:50:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:29,533 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2021-11-03 03:50:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:50:29,534 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 [2021-11-03 03:50:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:29,539 INFO L225 Difference]: With dead ends: 171 [2021-11-03 03:50:29,540 INFO L226 Difference]: Without dead ends: 171 [2021-11-03 03:50:29,540 INFO L786 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 [2021-11-03 03:50:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-03 03:50:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-11-03 03:50:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 101 states have (on average 1.8712871287128714) internal successors, (189), 170 states have internal predecessors, (189), 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) [2021-11-03 03:50:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 189 transitions. [2021-11-03 03:50:29,555 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 189 transitions. Word has length 3 [2021-11-03 03:50:29,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:29,556 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 189 transitions. [2021-11-03 03:50:29,556 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) [2021-11-03 03:50:29,570 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 189 transitions. [2021-11-03 03:50:29,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 03:50:29,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:29,571 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 03:50:29,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:29,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:29,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-11-03 03:50:29,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:29,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388489023] [2021-11-03 03:50:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:29,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:29,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:29,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:29,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:50:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:29,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:50:29,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:29,977 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 [2021-11-03 03:50:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:30,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:30,565 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:30,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388489023] [2021-11-03 03:50:30,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388489023] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:30,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:30,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 03:50:30,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864486000] [2021-11-03 03:50:30,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:50:30,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:50:30,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:50:30,568 INFO L87 Difference]: Start difference. First operand 171 states and 189 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-11-03 03:50:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:33,995 INFO L93 Difference]: Finished difference Result 180 states and 199 transitions. [2021-11-03 03:50:33,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:50:33,999 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 6 [2021-11-03 03:50:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:34,002 INFO L225 Difference]: With dead ends: 180 [2021-11-03 03:50:34,002 INFO L226 Difference]: Without dead ends: 180 [2021-11-03 03:50:34,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-03 03:50:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2021-11-03 03:50:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 107 states have (on average 1.8317757009345794) internal successors, (196), 176 states have internal predecessors, (196), 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) [2021-11-03 03:50:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 196 transitions. [2021-11-03 03:50:34,014 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 196 transitions. Word has length 6 [2021-11-03 03:50:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:34,015 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 196 transitions. [2021-11-03 03:50:34,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-11-03 03:50:34,015 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 196 transitions. [2021-11-03 03:50:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:50:34,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:34,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:34,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:34,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:34,230 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:34,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1990005034, now seen corresponding path program 1 times [2021-11-03 03:50:34,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:34,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295720924] [2021-11-03 03:50:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:34,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:34,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:34,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:34,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:50:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:34,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:50:34,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:34,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:34,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:34,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295720924] [2021-11-03 03:50:34,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295720924] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:34,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [689848289] [2021-11-03 03:50:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:34,496 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:34,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:34,501 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:34,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-03 03:50:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:34,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:50:34,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:34,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:34,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [689848289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:34,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271159787] [2021-11-03 03:50:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:34,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:34,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:34,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:34,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 03:50:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:34,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:50:34,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:35,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:35,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271159787] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:35,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:50:35,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-11-03 03:50:35,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77902572] [2021-11-03 03:50:35,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:50:35,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:35,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:50:35,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:50:35,094 INFO L87 Difference]: Start difference. First operand 177 states and 196 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-03 03:50:35,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:35,216 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2021-11-03 03:50:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 03:50:35,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 [2021-11-03 03:50:35,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:35,218 INFO L225 Difference]: With dead ends: 185 [2021-11-03 03:50:35,218 INFO L226 Difference]: Without dead ends: 185 [2021-11-03 03:50:35,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:50:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-03 03:50:35,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-11-03 03:50:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 114 states have (on average 1.780701754385965) internal successors, (203), 183 states have internal predecessors, (203), 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) [2021-11-03 03:50:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 203 transitions. [2021-11-03 03:50:35,229 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 203 transitions. Word has length 13 [2021-11-03 03:50:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:35,230 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 203 transitions. [2021-11-03 03:50:35,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-03 03:50:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 203 transitions. [2021-11-03 03:50:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 03:50:35,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:35,231 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-03 03:50:35,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:35,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:35,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:35,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:35,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:35,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:35,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-11-03 03:50:35,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:35,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121855686] [2021-11-03 03:50:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:35,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:35,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:35,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:50:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:36,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:50:36,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:36,051 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 [2021-11-03 03:50:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:36,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:38,977 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:38,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121855686] [2021-11-03 03:50:38,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121855686] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:38,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1990208338] [2021-11-03 03:50:38,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:38,978 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:38,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:38,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 03:50:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:39,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:50:39,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:39,236 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 [2021-11-03 03:50:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:39,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:40,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1990208338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:40,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880353426] [2021-11-03 03:50:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:40,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:40,356 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:40,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 03:50:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:40,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:50:40,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:40,570 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 [2021-11-03 03:50:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:40,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:41,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880353426] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:41,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:50:41,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-11-03 03:50:41,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487288958] [2021-11-03 03:50:41,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:50:41,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:50:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:50:41,610 INFO L87 Difference]: Start difference. First operand 184 states and 203 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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) [2021-11-03 03:50:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:48,057 INFO L93 Difference]: Finished difference Result 187 states and 205 transitions. [2021-11-03 03:50:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 03:50:48,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 [2021-11-03 03:50:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:48,059 INFO L225 Difference]: With dead ends: 187 [2021-11-03 03:50:48,060 INFO L226 Difference]: Without dead ends: 187 [2021-11-03 03:50:48,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-11-03 03:50:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-03 03:50:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-03 03:50:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 118 states have (on average 1.7372881355932204) internal successors, (205), 186 states have internal predecessors, (205), 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) [2021-11-03 03:50:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 205 transitions. [2021-11-03 03:50:48,073 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 205 transitions. Word has length 14 [2021-11-03 03:50:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:48,073 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 205 transitions. [2021-11-03 03:50:48,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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) [2021-11-03 03:50:48,074 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 205 transitions. [2021-11-03 03:50:48,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 03:50:48,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:48,075 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:48,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-03 03:50:48,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:48,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:48,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:48,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 388981918, now seen corresponding path program 2 times [2021-11-03 03:50:48,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:48,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897842718] [2021-11-03 03:50:48,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:48,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:48,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:48,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:48,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:50:48,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 03:50:48,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:49,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 03:50:49,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:49,076 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 03:50:49,076 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-03 03:50:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 03:50:49,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 03:50:49,159 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:49,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897842718] [2021-11-03 03:50:49,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897842718] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:49,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:49,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:50:49,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705709987] [2021-11-03 03:50:49,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:50:49,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:49,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:50:49,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:50:49,161 INFO L87 Difference]: Start difference. First operand 187 states and 205 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-03 03:50:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:49,803 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2021-11-03 03:50:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:50:49,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 29 [2021-11-03 03:50:49,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:49,805 INFO L225 Difference]: With dead ends: 198 [2021-11-03 03:50:49,805 INFO L226 Difference]: Without dead ends: 198 [2021-11-03 03:50:49,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:50:49,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-03 03:50:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 182. [2021-11-03 03:50:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 118 states have (on average 1.694915254237288) internal successors, (200), 181 states have internal predecessors, (200), 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) [2021-11-03 03:50:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 200 transitions. [2021-11-03 03:50:49,814 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 200 transitions. Word has length 29 [2021-11-03 03:50:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:49,814 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 200 transitions. [2021-11-03 03:50:49,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-11-03 03:50:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 200 transitions. [2021-11-03 03:50:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 03:50:49,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:49,816 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:49,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:50,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:50,030 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:50,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:50,031 INFO L85 PathProgramCache]: Analyzing trace with hash 388981919, now seen corresponding path program 1 times [2021-11-03 03:50:50,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:50,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654849767] [2021-11-03 03:50:50,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:50,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:50,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:50,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:50,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 03:50:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:50,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:50:50,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:50,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:50,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:50,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654849767] [2021-11-03 03:50:50,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654849767] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:50,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1214744198] [2021-11-03 03:50:50,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:50,734 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:50:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:50:50,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:50:50,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 03:50:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:51,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 03:50:51,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:51,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:51,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1214744198] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:51,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949369858] [2021-11-03 03:50:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:51,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:50:51,454 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:50:51,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 03:50:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:51,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:50:51,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:51,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:50:52,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949369858] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:50:52,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:50:52,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-11-03 03:50:52,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135898455] [2021-11-03 03:50:52,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-03 03:50:52,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-03 03:50:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-11-03 03:50:52,389 INFO L87 Difference]: Start difference. First operand 182 states and 200 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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) [2021-11-03 03:50:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:53,197 INFO L93 Difference]: Finished difference Result 210 states and 229 transitions. [2021-11-03 03:50:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 03:50:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 29 [2021-11-03 03:50:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:53,210 INFO L225 Difference]: With dead ends: 210 [2021-11-03 03:50:53,210 INFO L226 Difference]: Without dead ends: 210 [2021-11-03 03:50:53,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-11-03 03:50:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-03 03:50:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-03 03:50:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 146 states have (on average 1.5684931506849316) internal successors, (229), 209 states have internal predecessors, (229), 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) [2021-11-03 03:50:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 229 transitions. [2021-11-03 03:50:53,221 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 229 transitions. Word has length 29 [2021-11-03 03:50:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:53,221 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 229 transitions. [2021-11-03 03:50:53,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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) [2021-11-03 03:50:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 229 transitions. [2021-11-03 03:50:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 03:50:53,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:53,228 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:53,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 03:50:53,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:53,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:53,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:50:53,844 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1981689168, now seen corresponding path program 2 times [2021-11-03 03:50:53,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:53,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762585865] [2021-11-03 03:50:53,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:50:53,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:53,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:53,846 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:53,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 03:50:54,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 03:50:54,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:50:54,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:50:54,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:54,513 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-03 03:50:54,513 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 1 case distinctions, treesize of input 19 treesize of output 21 [2021-11-03 03:50:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:50:54,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:50:55,284 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:50:55,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:50:55,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762585865] [2021-11-03 03:50:55,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762585865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:50:55,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:50:55,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 03:50:55,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397363425] [2021-11-03 03:50:55,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 03:50:55,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:50:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 03:50:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-03 03:50:55,287 INFO L87 Difference]: Start difference. First operand 210 states and 229 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2021-11-03 03:50:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:50:57,930 INFO L93 Difference]: Finished difference Result 335 states and 370 transitions. [2021-11-03 03:50:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:50:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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 49 [2021-11-03 03:50:57,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:50:57,934 INFO L225 Difference]: With dead ends: 335 [2021-11-03 03:50:57,934 INFO L226 Difference]: Without dead ends: 335 [2021-11-03 03:50:57,935 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:50:57,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-03 03:50:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 277. [2021-11-03 03:50:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 214 states have (on average 1.6775700934579438) internal successors, (359), 276 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:50:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 359 transitions. [2021-11-03 03:50:57,944 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 359 transitions. Word has length 49 [2021-11-03 03:50:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:50:57,944 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 359 transitions. [2021-11-03 03:50:57,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2021-11-03 03:50:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 359 transitions. [2021-11-03 03:50:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-03 03:50:57,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:50:57,946 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:50:57,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:50:58,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:50:58,160 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:50:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:50:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2118422360, now seen corresponding path program 1 times [2021-11-03 03:50:58,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:50:58,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375221229] [2021-11-03 03:50:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:50:58,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:50:58,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:50:58,161 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:50:58,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 03:50:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:50:58,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 03:50:58,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:50:59,131 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-03 03:50:59,132 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 1 case distinctions, treesize of input 26 treesize of output 27 [2021-11-03 03:50:59,549 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-03 03:50:59,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 55 [2021-11-03 03:50:59,593 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 03:50:59,594 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 49 treesize of output 45 [2021-11-03 03:50:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:50:59,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:02,339 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-03 03:51:02,340 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 46 treesize of output 45 [2021-11-03 03:51:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:51:06,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:06,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375221229] [2021-11-03 03:51:06,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375221229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:06,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:06,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-03 03:51:06,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801504029] [2021-11-03 03:51:06,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 03:51:06,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:06,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 03:51:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2021-11-03 03:51:06,075 INFO L87 Difference]: Start difference. First operand 277 states and 359 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 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) [2021-11-03 03:51:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:13,690 INFO L93 Difference]: Finished difference Result 385 states and 423 transitions. [2021-11-03 03:51:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:51:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 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 52 [2021-11-03 03:51:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:13,694 INFO L225 Difference]: With dead ends: 385 [2021-11-03 03:51:13,695 INFO L226 Difference]: Without dead ends: 385 [2021-11-03 03:51:13,695 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=139, Invalid=280, Unknown=1, NotChecked=0, Total=420 [2021-11-03 03:51:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-03 03:51:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 222. [2021-11-03 03:51:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 163 states have (on average 1.5276073619631902) internal successors, (249), 221 states have internal predecessors, (249), 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) [2021-11-03 03:51:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 249 transitions. [2021-11-03 03:51:13,703 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 249 transitions. Word has length 52 [2021-11-03 03:51:13,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:13,703 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 249 transitions. [2021-11-03 03:51:13,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 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) [2021-11-03 03:51:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 249 transitions. [2021-11-03 03:51:13,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 03:51:13,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:13,705 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:13,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:13,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:13,920 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:51:13,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:13,920 INFO L85 PathProgramCache]: Analyzing trace with hash -328933539, now seen corresponding path program 1 times [2021-11-03 03:51:13,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:13,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203878931] [2021-11-03 03:51:13,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:13,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:13,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:13,922 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:13,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:51:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:14,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:51:14,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:14,769 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 03:51:14,769 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-03 03:51:14,839 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 03:51:14,839 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 17 treesize of output 22 [2021-11-03 03:51:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:51:14,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:51:15,036 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:15,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203878931] [2021-11-03 03:51:15,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203878931] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:15,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:15,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:51:15,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494910941] [2021-11-03 03:51:15,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:51:15,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:51:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:51:15,038 INFO L87 Difference]: Start difference. First operand 222 states and 249 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-11-03 03:51:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:15,869 INFO L93 Difference]: Finished difference Result 229 states and 256 transitions. [2021-11-03 03:51:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:51:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 55 [2021-11-03 03:51:15,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:15,871 INFO L225 Difference]: With dead ends: 229 [2021-11-03 03:51:15,871 INFO L226 Difference]: Without dead ends: 229 [2021-11-03 03:51:15,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:51:15,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-03 03:51:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2021-11-03 03:51:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.5238095238095237) internal successors, (256), 225 states have internal predecessors, (256), 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) [2021-11-03 03:51:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2021-11-03 03:51:15,883 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 55 [2021-11-03 03:51:15,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:15,884 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2021-11-03 03:51:15,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-11-03 03:51:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2021-11-03 03:51:15,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 03:51:15,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:15,887 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:15,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:16,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:16,104 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:51:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash -328933538, now seen corresponding path program 1 times [2021-11-03 03:51:16,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:16,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749791514] [2021-11-03 03:51:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:16,105 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:16,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:16,106 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:16,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 03:51:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:16,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 03:51:16,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:17,246 INFO L354 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2021-11-03 03:51:17,246 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 1 case distinctions, treesize of input 35 treesize of output 36 [2021-11-03 03:51:17,274 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-03 03:51:17,274 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 1 case distinctions, treesize of input 36 treesize of output 40 [2021-11-03 03:51:17,835 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-03 03:51:17,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2021-11-03 03:51:17,851 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-03 03:51:17,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 50 [2021-11-03 03:51:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:51:18,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:21,993 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 59 treesize of output 57 [2021-11-03 03:51:22,322 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:51:22,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:22,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749791514] [2021-11-03 03:51:22,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749791514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:22,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:22,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-03 03:51:22,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806722721] [2021-11-03 03:51:22,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:51:22,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:51:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=98, Unknown=1, NotChecked=0, Total=132 [2021-11-03 03:51:22,325 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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) [2021-11-03 03:51:49,122 WARN L207 SmtUtils]: Spent 10.98 s on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-11-03 03:51:59,230 WARN L207 SmtUtils]: Spent 8.66 s on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-11-03 03:52:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:52:01,417 INFO L93 Difference]: Finished difference Result 419 states and 459 transitions. [2021-11-03 03:52:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 03:52:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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 55 [2021-11-03 03:52:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:52:01,421 INFO L225 Difference]: With dead ends: 419 [2021-11-03 03:52:01,421 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 03:52:01,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=157, Invalid=304, Unknown=1, NotChecked=0, Total=462 [2021-11-03 03:52:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 03:52:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 229. [2021-11-03 03:52:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 171 states have (on average 1.5029239766081872) internal successors, (257), 228 states have internal predecessors, (257), 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) [2021-11-03 03:52:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 257 transitions. [2021-11-03 03:52:01,430 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 257 transitions. Word has length 55 [2021-11-03 03:52:01,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:52:01,431 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 257 transitions. [2021-11-03 03:52:01,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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) [2021-11-03 03:52:01,431 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 257 transitions. [2021-11-03 03:52:01,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 03:52:01,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:52:01,432 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:52:01,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 03:52:01,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:52:01,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:52:01,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:52:01,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1856332990, now seen corresponding path program 1 times [2021-11-03 03:52:01,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:52:01,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217140204] [2021-11-03 03:52:01,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:52:01,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:52:01,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:52:01,653 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:52:01,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 03:52:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:52:02,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:52:02,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:52:02,672 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 [2021-11-03 03:52:02,733 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 27 treesize of output 23 [2021-11-03 03:52:02,964 INFO L354 Elim1Store]: treesize reduction 46, result has 20.7 percent of original size [2021-11-03 03:52:02,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 33 [2021-11-03 03:52:03,091 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 03:52:03,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 45 treesize of output 17 [2021-11-03 03:52:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:52:03,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:52:05,242 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd .cse0 c_ULTIMATE.start_main_~mem_track~0.offset) |c_ULTIMATE.start_main_#t~mem153.base|)) c_ULTIMATE.start_main_~argv~0.base) (bvadd .cse0 c_ULTIMATE.start_main_~argv~0.offset))))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-03 03:52:07,288 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd .cse0 c_ULTIMATE.start_main_~mem_track~0.offset) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))))))))))))))))))) is different from false [2021-11-03 03:52:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:52:07,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:52:07,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217140204] [2021-11-03 03:52:07,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217140204] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:52:07,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:52:07,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-03 03:52:07,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492261859] [2021-11-03 03:52:07,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 03:52:07,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:52:07,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 03:52:07,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-11-03 03:52:07,456 INFO L87 Difference]: Start difference. First operand 229 states and 257 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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) [2021-11-03 03:52:18,920 WARN L207 SmtUtils]: Spent 8.08 s on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2021-11-03 03:52:37,517 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset)))))))))))))) (_ bv1 1))) (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)))) (let ((.cse1 (bvadd .cse0 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd .cse0 c_ULTIMATE.start_main_~mem_track~0.offset) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))))))))))))))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_#t~malloc152.base|))))))))))))))))))) (_ bv1 1)))) is different from false [2021-11-03 03:52:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:52:41,185 INFO L93 Difference]: Finished difference Result 229 states and 255 transitions. [2021-11-03 03:52:41,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 03:52:41,187 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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 58 [2021-11-03 03:52:41,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:52:41,188 INFO L225 Difference]: With dead ends: 229 [2021-11-03 03:52:41,188 INFO L226 Difference]: Without dead ends: 229 [2021-11-03 03:52:41,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=51, Invalid=111, Unknown=6, NotChecked=72, Total=240 [2021-11-03 03:52:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-03 03:52:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-11-03 03:52:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 171 states have (on average 1.4912280701754386) internal successors, (255), 227 states have internal predecessors, (255), 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) [2021-11-03 03:52:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 255 transitions. [2021-11-03 03:52:41,196 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 255 transitions. Word has length 58 [2021-11-03 03:52:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:52:41,196 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 255 transitions. [2021-11-03 03:52:41,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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) [2021-11-03 03:52:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 255 transitions. [2021-11-03 03:52:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 03:52:41,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:52:41,197 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:52:41,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 03:52:41,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:52:41,398 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:52:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:52:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1856332991, now seen corresponding path program 1 times [2021-11-03 03:52:41,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:52:41,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896033096] [2021-11-03 03:52:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:52:41,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:52:41,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:52:41,400 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:52:41,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 03:52:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:52:42,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-03 03:52:42,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:52:42,350 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 11 treesize of output 9 [2021-11-03 03:52:42,413 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 [2021-11-03 03:52:42,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-03 03:52:42,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-03 03:52:42,760 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 03:52:42,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 63 treesize of output 62 [2021-11-03 03:52:42,828 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 03:52:42,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 47 treesize of output 46 [2021-11-03 03:52:42,953 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 51 treesize of output 33 [2021-11-03 03:52:42,959 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 30 treesize of output 12 [2021-11-03 03:52:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:52:43,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:52:45,579 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153.base| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153.offset| (_ BitVec 64))) (let ((.cse2 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)))) (let ((.cse0 (bvadd .cse2 ULTIMATE.start_main_~mem_track~0.offset)) (.cse1 (bvadd .cse2 c_ULTIMATE.start_main_~argv~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse0 |ULTIMATE.start_main_#t~mem153.offset|)) c_ULTIMATE.start_main_~argv~0.base) .cse1) (_ bv11 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse0 |ULTIMATE.start_main_#t~mem153.base|)) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))) (forall ((ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153.offset| (_ BitVec 64))) (let ((.cse3 (let ((.cse4 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)))) (select (select (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd .cse4 ULTIMATE.start_main_~mem_track~0.offset) |ULTIMATE.start_main_#t~mem153.offset|)) c_ULTIMATE.start_main_~argv~0.base) (bvadd .cse4 c_ULTIMATE.start_main_~argv~0.offset))))) (bvule (bvadd (_ bv10 64) .cse3) (bvadd .cse3 (_ bv11 64)))))) is different from false [2021-11-03 03:52:45,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:52:45,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:52:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:52:46,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:52:46,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896033096] [2021-11-03 03:52:46,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896033096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:52:46,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:52:46,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-03 03:52:46,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328690885] [2021-11-03 03:52:46,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 03:52:46,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:52:46,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 03:52:46,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2021-11-03 03:52:46,378 INFO L87 Difference]: Start difference. First operand 228 states and 255 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 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) [2021-11-03 03:52:51,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:52:51,060 INFO L93 Difference]: Finished difference Result 227 states and 253 transitions. [2021-11-03 03:52:51,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 03:52:51,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 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 58 [2021-11-03 03:52:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:52:51,064 INFO L225 Difference]: With dead ends: 227 [2021-11-03 03:52:51,064 INFO L226 Difference]: Without dead ends: 227 [2021-11-03 03:52:51,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=49, Invalid=110, Unknown=1, NotChecked=22, Total=182 [2021-11-03 03:52:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-03 03:52:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-03 03:52:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 171 states have (on average 1.4795321637426901) internal successors, (253), 226 states have internal predecessors, (253), 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) [2021-11-03 03:52:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 253 transitions. [2021-11-03 03:52:51,077 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 253 transitions. Word has length 58 [2021-11-03 03:52:51,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:52:51,077 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 253 transitions. [2021-11-03 03:52:51,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 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) [2021-11-03 03:52:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 253 transitions. [2021-11-03 03:52:51,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-03 03:52:51,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:52:51,079 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:52:51,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 03:52:51,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:52:51,299 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 69 more)] === [2021-11-03 03:52:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:52:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 534217897, now seen corresponding path program 1 times [2021-11-03 03:52:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:52:51,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422334765] [2021-11-03 03:52:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:52:51,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:52:51,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:52:51,301 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:52:51,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cdba4d-a40e-489e-ab3b-84a38194ea5d/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-03 03:52:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:52:52,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 03:52:52,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:52:52,313 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 11 treesize of output 9 [2021-11-03 03:52:52,431 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-03 03:52:52,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-03 03:52:52,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-03 03:52:52,867 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 03:52:52,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 53 treesize of output 43 [2021-11-03 03:52:53,199 INFO L354 Elim1Store]: treesize reduction 50, result has 19.4 percent of original size [2021-11-03 03:52:53,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 46 [2021-11-03 03:52:53,385 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 59 treesize of output 32 [2021-11-03 03:52:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-03 03:52:53,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:52:53,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 03:52:53,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 03:53:03,864 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem154.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)) c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154.offset|) v_DerPreprocessor_1))) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))))) (_ bv1 1)))) is different from false [2021-11-03 03:53:05,943 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem153.base| (_ BitVec 64)) (|ULTIMATE.start_main_#t~mem154.offset| (_ BitVec 64)) (v_DerPreprocessor_1 (_ BitVec 64))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul ((_ sign_extend 32) c_ULTIMATE.start_main_~i~5) (_ bv8 64)))) (let ((.cse2 (bvadd .cse3 c_ULTIMATE.start_main_~argv~0.offset))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd .cse3 ULTIMATE.start_main_~mem_track~0.offset) |ULTIMATE.start_main_#t~mem153.base|)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd (_ bv10 64) |ULTIMATE.start_main_#t~mem154.offset|) v_DerPreprocessor_1)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))) (_ bv1 1)))) is different from false