./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:19:08,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:19:08,246 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:19:08,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:19:08,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:19:08,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:19:08,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:19:08,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:19:08,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:19:08,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:19:08,314 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:19:08,316 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:19:08,316 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:19:08,318 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:19:08,319 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:19:08,319 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:19:08,320 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:19:08,321 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:19:08,321 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:19:08,322 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:19:08,322 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:19:08,323 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:19:08,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:19:08,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:19:08,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:19:08,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:19:08,327 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:19:08,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:19:08,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:19:08,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:19:08,330 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:19:08,331 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:19:08,331 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:19:08,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:19:08,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:19:08,332 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:19:08,333 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:19:08,333 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:19:08,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:19:08,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:19:08,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:19:08,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:19:08,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:08,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:19:08,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:19:08,337 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:19:08,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:19:08,338 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:19:08,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:19:08,338 INFO L153 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_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2023-11-19 05:19:08,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:19:08,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:19:08,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:19:08,729 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:19:08,730 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:19:08,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-19 05:19:12,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:19:12,515 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:19:12,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-19 05:19:12,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data/7d3c9b351/6c695f12e71d4a8f98a1c5aa866c7832/FLAG13ecf2849 [2023-11-19 05:19:12,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data/7d3c9b351/6c695f12e71d4a8f98a1c5aa866c7832 [2023-11-19 05:19:12,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:19:12,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:19:12,583 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:12,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:19:12,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:19:12,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:12" (1/1) ... [2023-11-19 05:19:12,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389454dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:12, skipping insertion in model container [2023-11-19 05:19:12,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:12" (1/1) ... [2023-11-19 05:19:12,674 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:13,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:13,418 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 05:19:13,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@be342fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:13, skipping insertion in model container [2023-11-19 05:19:13,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:13,419 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:19:13,422 INFO L158 Benchmark]: Toolchain (without parser) took 839.64ms. Allocated memory is still 146.8MB. Free memory was 99.9MB in the beginning and 82.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:19:13,423 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 146.8MB. Free memory was 93.9MB in the beginning and 93.7MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:19:13,426 INFO L158 Benchmark]: CACSL2BoogieTranslator took 836.47ms. Allocated memory is still 146.8MB. Free memory was 99.9MB in the beginning and 82.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:19:13,428 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 146.8MB. Free memory was 93.9MB in the beginning and 93.7MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 836.47ms. Allocated memory is still 146.8MB. Free memory was 99.9MB in the beginning and 82.4MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:19:16,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:19:16,396 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:19:16,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:19:16,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:19:16,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:19:16,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:19:16,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:19:16,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:19:16,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:19:16,471 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:19:16,471 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:19:16,472 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:19:16,474 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:19:16,475 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:19:16,476 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:19:16,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:19:16,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:19:16,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:19:16,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:19:16,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:19:16,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:19:16,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:19:16,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:19:16,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:19:16,484 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:19:16,485 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:19:16,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:19:16,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:19:16,487 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:19:16,489 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:19:16,489 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:19:16,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:19:16,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:19:16,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:19:16,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:19:16,492 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:19:16,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:19:16,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:19:16,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:16,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:19:16,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:19:16,495 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:19:16,496 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:16,496 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:19:16,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:19:16,497 INFO L153 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_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98addbea2d7583a98dfe535f8a62b1da98b67168a60a4eb76b7c658a539d3a89 [2023-11-19 05:19:16,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:19:17,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:19:17,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:19:17,019 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:19:17,020 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:19:17,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-19 05:19:20,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:19:20,682 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:19:20,682 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-2.i [2023-11-19 05:19:20,721 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data/499f84aa1/76db58abb4834cd28b52fdc7d548d13d/FLAG6deae6b3a [2023-11-19 05:19:20,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/data/499f84aa1/76db58abb4834cd28b52fdc7d548d13d [2023-11-19 05:19:20,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:19:20,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:19:20,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:20,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:19:20,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:19:20,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:20" (1/1) ... [2023-11-19 05:19:20,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443f4dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:20, skipping insertion in model container [2023-11-19 05:19:20,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:19:20" (1/1) ... [2023-11-19 05:19:20,841 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:21,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:21,718 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:19:21,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:19:21,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:21,900 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:19:22,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:19:22,077 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:19:22,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22 WrapperNode [2023-11-19 05:19:22,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:19:22,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:22,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:19:22,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:19:22,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,234 INFO L138 Inliner]: procedures = 180, calls = 238, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 786 [2023-11-19 05:19:22,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:19:22,235 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:19:22,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:19:22,236 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:19:22,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,267 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:19:22,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:19:22,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:19:22,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:19:22,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (1/1) ... [2023-11-19 05:19:22,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:19:22,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:22,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:19:22,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:19:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:19:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:19:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:19:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:19:22,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:19:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:19:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:19:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:19:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:19:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:19:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:19:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:19:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:19:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:19:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:19:22,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:19:22,750 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:19:22,753 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:19:30,214 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:19:30,240 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:19:30,240 INFO L302 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-19 05:19:30,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:30 BoogieIcfgContainer [2023-11-19 05:19:30,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:19:30,253 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:19:30,253 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:19:30,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:19:30,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:19:20" (1/3) ... [2023-11-19 05:19:30,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216522ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:30, skipping insertion in model container [2023-11-19 05:19:30,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:19:22" (2/3) ... [2023-11-19 05:19:30,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216522ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:19:30, skipping insertion in model container [2023-11-19 05:19:30,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:19:30" (3/3) ... [2023-11-19 05:19:30,265 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-2.i [2023-11-19 05:19:30,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:19:30,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:19:30,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:19:30,367 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e7390e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:19:30,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:19:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 146 states have (on average 1.6506849315068493) internal successors, (241), 158 states have internal predecessors, (241), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:19:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:19:30,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:30,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:30,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:30,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash -664136903, now seen corresponding path program 1 times [2023-11-19 05:19:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881898332] [2023-11-19 05:19:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:30,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:30,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:30,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:30,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:19:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:30,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:19:30,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:30,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:30,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:30,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881898332] [2023-11-19 05:19:30,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881898332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:30,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:30,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:19:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964892855] [2023-11-19 05:19:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:30,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:30,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:30,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:30,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:30,749 INFO L87 Difference]: Start difference. First operand has 164 states, 146 states have (on average 1.6506849315068493) internal successors, (241), 158 states have internal predecessors, (241), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:31,060 INFO L93 Difference]: Finished difference Result 252 states and 335 transitions. [2023-11-19 05:19:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:31,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:19:31,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:31,078 INFO L225 Difference]: With dead ends: 252 [2023-11-19 05:19:31,079 INFO L226 Difference]: Without dead ends: 250 [2023-11-19 05:19:31,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:31,085 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 108 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:31,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 431 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:19:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-19 05:19:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 162. [2023-11-19 05:19:31,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 156 states have internal predecessors, (193), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:19:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 219 transitions. [2023-11-19 05:19:31,159 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 219 transitions. Word has length 11 [2023-11-19 05:19:31,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:31,160 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 219 transitions. [2023-11-19 05:19:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 219 transitions. [2023-11-19 05:19:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:19:31,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:31,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:31,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:31,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:31,369 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:31,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:31,370 INFO L85 PathProgramCache]: Analyzing trace with hash 586545796, now seen corresponding path program 1 times [2023-11-19 05:19:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117814407] [2023-11-19 05:19:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:31,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:31,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:31,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:31,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:19:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:31,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:31,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:31,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:31,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:31,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117814407] [2023-11-19 05:19:31,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117814407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:31,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:31,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:19:31,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536562263] [2023-11-19 05:19:31,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:31,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:19:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:19:31,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:19:31,979 INFO L87 Difference]: Start difference. First operand 162 states and 219 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:32,137 INFO L93 Difference]: Finished difference Result 166 states and 215 transitions. [2023-11-19 05:19:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:19:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 05:19:32,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:32,141 INFO L225 Difference]: With dead ends: 166 [2023-11-19 05:19:32,141 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 05:19:32,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:32,143 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 36 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:32,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 541 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:19:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 05:19:32,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2023-11-19 05:19:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 148 states have (on average 1.2702702702702702) internal successors, (188), 159 states have internal predecessors, (188), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:19:32,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 214 transitions. [2023-11-19 05:19:32,160 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 214 transitions. Word has length 66 [2023-11-19 05:19:32,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:32,161 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 214 transitions. [2023-11-19 05:19:32,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:32,161 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 214 transitions. [2023-11-19 05:19:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:19:32,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:32,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:32,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:32,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:32,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:32,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1454761096, now seen corresponding path program 1 times [2023-11-19 05:19:32,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:32,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218261903] [2023-11-19 05:19:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:32,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:32,380 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:32,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 05:19:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:32,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:32,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:33,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:33,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218261903] [2023-11-19 05:19:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218261903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:33,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:19:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634678072] [2023-11-19 05:19:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:19:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:19:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:33,318 INFO L87 Difference]: Start difference. First operand 165 states and 214 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:34,030 INFO L93 Difference]: Finished difference Result 238 states and 300 transitions. [2023-11-19 05:19:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:19:34,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 05:19:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:34,041 INFO L225 Difference]: With dead ends: 238 [2023-11-19 05:19:34,041 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 05:19:34,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:19:34,043 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 49 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:34,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 376 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:19:34,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 05:19:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 207. [2023-11-19 05:19:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 190 states have (on average 1.231578947368421) internal successors, (234), 201 states have internal predecessors, (234), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:19:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 260 transitions. [2023-11-19 05:19:34,065 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 260 transitions. Word has length 66 [2023-11-19 05:19:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:34,066 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 260 transitions. [2023-11-19 05:19:34,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:19:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 260 transitions. [2023-11-19 05:19:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 05:19:34,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:34,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:34,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 05:19:34,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:34,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:34,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:34,278 INFO L85 PathProgramCache]: Analyzing trace with hash -921436779, now seen corresponding path program 1 times [2023-11-19 05:19:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974130913] [2023-11-19 05:19:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:34,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:34,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:34,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:34,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 05:19:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:34,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:34,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:19:34,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:19:34,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:34,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974130913] [2023-11-19 05:19:34,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974130913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:19:34,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:19:34,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:19:34,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715710238] [2023-11-19 05:19:34,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:19:34,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:19:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:19:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:19:34,880 INFO L87 Difference]: Start difference. First operand 207 states and 260 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:19:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:34,953 INFO L93 Difference]: Finished difference Result 210 states and 264 transitions. [2023-11-19 05:19:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:19:34,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2023-11-19 05:19:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:34,958 INFO L225 Difference]: With dead ends: 210 [2023-11-19 05:19:34,958 INFO L226 Difference]: Without dead ends: 210 [2023-11-19 05:19:34,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:19:34,963 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 2 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:34,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:19:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-19 05:19:34,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-11-19 05:19:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 192 states have (on average 1.234375) internal successors, (237), 204 states have internal predecessors, (237), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 05:19:34,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 264 transitions. [2023-11-19 05:19:34,982 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 264 transitions. Word has length 81 [2023-11-19 05:19:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:34,983 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 264 transitions. [2023-11-19 05:19:34,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:19:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 264 transitions. [2023-11-19 05:19:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 05:19:34,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:34,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:35,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:35,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:35,202 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:35,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:35,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1569490291, now seen corresponding path program 1 times [2023-11-19 05:19:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773485338] [2023-11-19 05:19:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:35,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:35,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:35,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:35,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 05:19:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:35,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:19:35,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:35,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:19:35,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773485338] [2023-11-19 05:19:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773485338] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1949546434] [2023-11-19 05:19:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:36,000 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:19:36,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:19:36,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 05:19:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:36,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:19:36,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:19:36,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:19:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1949546434] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786895796] [2023-11-19 05:19:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:36,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:36,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:36,987 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:37,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:19:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:37,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:19:37,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:19:37,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:19:38,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786895796] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:38,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:19:38,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-11-19 05:19:38,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899824616] [2023-11-19 05:19:38,229 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:38,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:19:38,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:19:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:19:38,232 INFO L87 Difference]: Start difference. First operand 210 states and 264 transitions. Second operand has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:19:39,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:39,673 INFO L93 Difference]: Finished difference Result 453 states and 567 transitions. [2023-11-19 05:19:39,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:19:39,674 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 83 [2023-11-19 05:19:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:39,678 INFO L225 Difference]: With dead ends: 453 [2023-11-19 05:19:39,678 INFO L226 Difference]: Without dead ends: 453 [2023-11-19 05:19:39,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:19:39,680 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 419 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:39,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1786 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 05:19:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-19 05:19:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 451. [2023-11-19 05:19:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 423 states have (on average 1.215130023640662) internal successors, (514), 435 states have internal predecessors, (514), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2023-11-19 05:19:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 562 transitions. [2023-11-19 05:19:39,703 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 562 transitions. Word has length 83 [2023-11-19 05:19:39,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:39,703 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 562 transitions. [2023-11-19 05:19:39,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:19:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 562 transitions. [2023-11-19 05:19:39,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-19 05:19:39,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:39,713 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:39,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:39,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:40,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 05:19:40,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:40,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:40,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1481405380, now seen corresponding path program 1 times [2023-11-19 05:19:40,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:40,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476400939] [2023-11-19 05:19:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:40,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:40,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:40,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:40,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 05:19:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:41,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:19:41,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:41,849 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-19 05:19:41,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:42,217 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:19:42,218 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476400939] [2023-11-19 05:19:42,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476400939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080326144] [2023-11-19 05:19:42,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:42,219 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:42,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:19:42,220 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:19:42,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-19 05:19:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:44,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:19:44,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-19 05:19:44,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:19:44,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080326144] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:44,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271380505] [2023-11-19 05:19:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:19:44,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:44,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:44,511 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:44,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:19:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:45,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:19:45,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-19 05:19:45,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-19 05:19:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271380505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:46,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:19:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-11-19 05:19:46,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585589249] [2023-11-19 05:19:46,234 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:46,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 05:19:46,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:46,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 05:19:46,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:19:46,239 INFO L87 Difference]: Start difference. First operand 451 states and 562 transitions. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:19:47,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:47,726 INFO L93 Difference]: Finished difference Result 477 states and 609 transitions. [2023-11-19 05:19:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 05:19:47,727 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 252 [2023-11-19 05:19:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:47,734 INFO L225 Difference]: With dead ends: 477 [2023-11-19 05:19:47,734 INFO L226 Difference]: Without dead ends: 471 [2023-11-19 05:19:47,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 05:19:47,739 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 43 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:47,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2413 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:19:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-11-19 05:19:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 463. [2023-11-19 05:19:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 435 states have (on average 1.2183908045977012) internal successors, (530), 447 states have internal predecessors, (530), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2023-11-19 05:19:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 578 transitions. [2023-11-19 05:19:47,769 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 578 transitions. Word has length 252 [2023-11-19 05:19:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:47,769 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 578 transitions. [2023-11-19 05:19:47,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:19:47,770 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 578 transitions. [2023-11-19 05:19:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-19 05:19:47,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:47,779 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:19:47,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:48,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-11-19 05:19:48,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:48,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:48,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:48,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:48,397 INFO L85 PathProgramCache]: Analyzing trace with hash 721907196, now seen corresponding path program 2 times [2023-11-19 05:19:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:48,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560877478] [2023-11-19 05:19:48,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:19:48,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:48,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:48,400 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:48,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 05:19:49,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:19:49,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:49,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:19:49,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-19 05:19:50,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 05:19:51,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560877478] [2023-11-19 05:19:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560877478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [440517722] [2023-11-19 05:19:51,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:19:51,377 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:51,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:19:51,378 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:19:51,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-19 05:19:54,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:19:54,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:54,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:19:54,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-19 05:19:54,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 05:19:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [440517722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:54,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100613287] [2023-11-19 05:19:54,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:19:54,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:54,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:54,604 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:54,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48ae14e9-f19e-4909-8508-b9458465bcb2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:19:56,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:19:56,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:56,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:19:56,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-19 05:19:57,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-19 05:19:59,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100613287] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:59,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:19:59,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-11-19 05:19:59,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934264576] [2023-11-19 05:19:59,077 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:59,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-19 05:19:59,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-19 05:19:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 05:19:59,084 INFO L87 Difference]: Start difference. First operand 463 states and 578 transitions. Second operand has 36 states, 36 states have (on average 16.583333333333332) internal successors, (597), 36 states have internal predecessors, (597), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8)