./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:13:31,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:13:31,159 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:13:31,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:13:31,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:13:31,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:13:31,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:13:31,209 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:13:31,210 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:13:31,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:13:31,215 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:13:31,216 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:13:31,217 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:13:31,218 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:13:31,219 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:13:31,219 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:13:31,220 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:13:31,220 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:13:31,221 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:13:31,221 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:13:31,222 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:13:31,223 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:13:31,223 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:13:31,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:13:31,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:13:31,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:13:31,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:13:31,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:13:31,226 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:13:31,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:13:31,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:13:31,228 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:13:31,229 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:13:31,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:13:31,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:13:31,229 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:13:31,230 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:13:31,230 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:13:31,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:13:31,231 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:13:31,231 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:13:31,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:13:31,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:31,232 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:13:31,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:13:31,233 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:13:31,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:13:31,233 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:13:31,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:13:31,234 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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c [2023-11-19 05:13:31,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:13:31,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:13:31,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:13:31,505 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:13:31,505 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:13:31,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2023-11-19 05:13:34,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:13:34,905 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:13:34,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2023-11-19 05:13:34,928 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data/df9c86e0f/66510018d4514ebbbaf7e8cbedb3cf38/FLAG2bd84cfbb [2023-11-19 05:13:34,945 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data/df9c86e0f/66510018d4514ebbbaf7e8cbedb3cf38 [2023-11-19 05:13:34,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:13:34,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:13:34,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:34,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:13:34,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:13:34,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:34" (1/1) ... [2023-11-19 05:13:34,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d492e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:34, skipping insertion in model container [2023-11-19 05:13:34,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:34" (1/1) ... [2023-11-19 05:13:35,056 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:13:35,289 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:13:35,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:35,661 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 05:13:35,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@24b07e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:35, skipping insertion in model container [2023-11-19 05:13:35,662 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:35,663 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:13:35,665 INFO L158 Benchmark]: Toolchain (without parser) took 710.75ms. Allocated memory is still 163.6MB. Free memory was 130.6MB in the beginning and 113.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:13:35,665 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:13:35,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.85ms. Allocated memory is still 163.6MB. Free memory was 130.6MB in the beginning and 113.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:13:35,668 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 72.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.85ms. Allocated memory is still 163.6MB. Free memory was 130.6MB in the beginning and 113.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 738]: 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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:13:38,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:13:38,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:13:38,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:13:38,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:13:38,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:13:38,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:13:38,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:13:38,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:13:38,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:13:38,343 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:13:38,343 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:13:38,344 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:13:38,344 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:13:38,345 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:13:38,345 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:13:38,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:13:38,347 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:13:38,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:13:38,348 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:13:38,348 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:13:38,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:13:38,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:13:38,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:13:38,360 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:13:38,361 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:13:38,361 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:13:38,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:13:38,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:13:38,362 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:13:38,363 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:13:38,364 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:13:38,364 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:13:38,364 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:13:38,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:13:38,365 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:13:38,366 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:13:38,366 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:13:38,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:13:38,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:38,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:13:38,367 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:13:38,367 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:13:38,367 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:13:38,368 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:13:38,368 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:13:38,368 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_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26a58d7d603dc7e351440fbc8be1a2e69d6c8a245d05ca1fdcdd97a1f744081c [2023-11-19 05:13:38,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:13:38,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:13:38,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:13:38,876 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:13:38,877 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:13:38,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2023-11-19 05:13:42,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:13:42,412 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:13:42,413 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2023-11-19 05:13:42,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data/8581c8be4/b1138887c7a847ec96f5675b1f593e48/FLAG3a1ec3e46 [2023-11-19 05:13:42,491 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/data/8581c8be4/b1138887c7a847ec96f5675b1f593e48 [2023-11-19 05:13:42,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:13:42,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:13:42,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:42,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:13:42,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:13:42,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:42" (1/1) ... [2023-11-19 05:13:42,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45112449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:42, skipping insertion in model container [2023-11-19 05:13:42,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:13:42" (1/1) ... [2023-11-19 05:13:42,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:13:42,924 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:13:43,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:43,158 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:13:43,171 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:13:43,178 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:13:43,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:43,286 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:13:43,326 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:13:43,399 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:13:43,454 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:13:43,462 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:13:43,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43 WrapperNode [2023-11-19 05:13:43,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:13:43,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:43,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:13:43,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:13:43,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,582 INFO L138 Inliner]: procedures = 181, calls = 229, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 743 [2023-11-19 05:13:43,582 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:13:43,583 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:13:43,583 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:13:43,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:13:43,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:13:43,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:13:43,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:13:43,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:13:43,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (1/1) ... [2023-11-19 05:13:43,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:13:43,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:13:43,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:13:43,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:13:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:13:43,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:13:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:13:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:13:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:13:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:13:43,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:13:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:13:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:13:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:13:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:13:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:13:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:13:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:13:44,006 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:13:44,009 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:13:50,244 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:13:50,256 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:13:50,257 INFO L302 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-19 05:13:50,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:50 BoogieIcfgContainer [2023-11-19 05:13:50,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:13:50,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:13:50,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:13:50,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:13:50,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:13:42" (1/3) ... [2023-11-19 05:13:50,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c8e6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:50, skipping insertion in model container [2023-11-19 05:13:50,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:13:43" (2/3) ... [2023-11-19 05:13:50,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c8e6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:13:50, skipping insertion in model container [2023-11-19 05:13:50,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:13:50" (3/3) ... [2023-11-19 05:13:50,276 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-2.i [2023-11-19 05:13:50,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:13:50,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:13:50,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:13:50,358 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;@2f0282a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:13:50,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:13:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 133 states have (on average 1.6390977443609023) internal successors, (218), 135 states have internal predecessors, (218), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:13:50,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:50,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:13:50,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:13:50,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1785902601, now seen corresponding path program 1 times [2023-11-19 05:13:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:13:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30730928] [2023-11-19 05:13:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:50,394 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 05:13:50,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:13:50,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:50,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:50,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:13:50,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:50,618 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 05:13:50,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:50,619 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:13:50,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30730928] [2023-11-19 05:13:50,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30730928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:50,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:50,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:50,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652605550] [2023-11-19 05:13:50,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:50,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:13:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:50,670 INFO L87 Difference]: Start difference. First operand has 140 states, 133 states have (on average 1.6390977443609023) internal successors, (218), 135 states have internal predecessors, (218), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:50,990 INFO L93 Difference]: Finished difference Result 228 states and 292 transitions. [2023-11-19 05:13:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:50,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-19 05:13:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:51,004 INFO L225 Difference]: With dead ends: 228 [2023-11-19 05:13:51,004 INFO L226 Difference]: Without dead ends: 226 [2023-11-19 05:13:51,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 05:13:51,010 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 372 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 05:13:51,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 372 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:13:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-19 05:13:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 138. [2023-11-19 05:13:51,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.2878787878787878) internal successors, (170), 133 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:51,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 176 transitions. [2023-11-19 05:13:51,065 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 176 transitions. Word has length 9 [2023-11-19 05:13:51,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:51,065 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 176 transitions. [2023-11-19 05:13:51,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 176 transitions. [2023-11-19 05:13:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 05:13:51,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:51,069 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] [2023-11-19 05:13:51,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:51,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:51,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:13:51,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash -336558078, now seen corresponding path program 1 times [2023-11-19 05:13:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:13:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097543255] [2023-11-19 05:13:51,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:51,278 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 05:13:51,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:13:51,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:51,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:51,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:13:51,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:51,806 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 05:13:51,813 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:51,814 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:13:51,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097543255] [2023-11-19 05:13:51,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097543255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:13:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397584784] [2023-11-19 05:13:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:13:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:13:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:13:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:13:51,820 INFO L87 Difference]: Start difference. First operand 138 states and 176 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:52,037 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2023-11-19 05:13:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:13:52,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-19 05:13:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:52,040 INFO L225 Difference]: With dead ends: 142 [2023-11-19 05:13:52,040 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 05:13:52,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 05:13:52,051 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 36 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:52,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 412 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:13:52,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 05:13:52,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2023-11-19 05:13:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 135 states have (on average 1.2222222222222223) internal successors, (165), 136 states have internal predecessors, (165), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 171 transitions. [2023-11-19 05:13:52,066 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 171 transitions. Word has length 64 [2023-11-19 05:13:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:52,066 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 171 transitions. [2023-11-19 05:13:52,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 171 transitions. [2023-11-19 05:13:52,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 05:13:52,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:52,070 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] [2023-11-19 05:13:52,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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)] Ended with exit code 0 [2023-11-19 05:13:52,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:52,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:13:52,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash -150972938, now seen corresponding path program 1 times [2023-11-19 05:13:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:13:52,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671890414] [2023-11-19 05:13:52,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:52,279 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 05:13:52,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:13:52,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:52,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:52,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:13:52,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:53,180 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 05:13:53,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:53,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:13:53,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671890414] [2023-11-19 05:13:53,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671890414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:53,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:53,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:13:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204587187] [2023-11-19 05:13:53,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:53,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:13:53,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:13:53,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:13:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:13:53,185 INFO L87 Difference]: Start difference. First operand 141 states and 171 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:54,116 INFO L93 Difference]: Finished difference Result 214 states and 257 transitions. [2023-11-19 05:13:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:13:54,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-11-19 05:13:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:54,122 INFO L225 Difference]: With dead ends: 214 [2023-11-19 05:13:54,123 INFO L226 Difference]: Without dead ends: 214 [2023-11-19 05:13:54,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 05:13:54,124 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 49 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:13:54,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 290 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:13:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-19 05:13:54,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 183. [2023-11-19 05:13:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.192090395480226) internal successors, (211), 178 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:13:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 217 transitions. [2023-11-19 05:13:54,142 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 217 transitions. Word has length 64 [2023-11-19 05:13:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:54,143 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 217 transitions. [2023-11-19 05:13:54,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:13:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 217 transitions. [2023-11-19 05:13:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 05:13:54,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:54,147 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] [2023-11-19 05:13:54,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:13:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:54,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:13:54,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash -244616813, now seen corresponding path program 1 times [2023-11-19 05:13:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:13:54,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026328209] [2023-11-19 05:13:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:54,355 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 05:13:54,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:13:54,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:54,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:54,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:13:54,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:54,962 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 05:13:54,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:54,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:13:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026328209] [2023-11-19 05:13:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026328209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:54,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:13:54,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:13:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911055111] [2023-11-19 05:13:54,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:54,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:13:54,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:13:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:13:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:13:54,968 INFO L87 Difference]: Start difference. First operand 183 states and 217 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:13:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:13:55,040 INFO L93 Difference]: Finished difference Result 186 states and 221 transitions. [2023-11-19 05:13:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:13:55,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2023-11-19 05:13:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:13:55,045 INFO L225 Difference]: With dead ends: 186 [2023-11-19 05:13:55,046 INFO L226 Difference]: Without dead ends: 186 [2023-11-19 05:13:55,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 05:13:55,048 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 479 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 05:13:55,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 479 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:13:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-19 05:13:55,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-19 05:13:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.1955307262569832) internal successors, (214), 181 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:13:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 221 transitions. [2023-11-19 05:13:55,065 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 221 transitions. Word has length 79 [2023-11-19 05:13:55,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:13:55,066 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 221 transitions. [2023-11-19 05:13:55,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:13:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 221 transitions. [2023-11-19 05:13:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 05:13:55,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:13:55,071 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] [2023-11-19 05:13:55,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:55,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:55,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:13:55,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:13:55,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1908584817, now seen corresponding path program 1 times [2023-11-19 05:13:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:13:55,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494913422] [2023-11-19 05:13:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:55,282 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 05:13:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:13:55,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:55,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:13:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:55,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:13:55,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:55,910 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 05:13:55,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:13:56,044 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 05:13:56,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:13:56,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494913422] [2023-11-19 05:13:56,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494913422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:13:56,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959501097] [2023-11-19 05:13:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:13:56,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:13:56,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:13:56,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:13:56,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 05:13:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:13:56,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:13:56,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:13:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:13:57,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:13:57,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1959501097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:13:57,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 05:13:57,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-19 05:13:57,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337220598] [2023-11-19 05:13:57,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:13:57,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:13:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:13:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:13:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:13:57,005 INFO L87 Difference]: Start difference. First operand 186 states and 221 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:13:59,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:01,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:04,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:14:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:04,931 INFO L93 Difference]: Finished difference Result 261 states and 315 transitions. [2023-11-19 05:14:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:14:04,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-19 05:14:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:04,936 INFO L225 Difference]: With dead ends: 261 [2023-11-19 05:14:04,936 INFO L226 Difference]: Without dead ends: 261 [2023-11-19 05:14:04,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:14:04,938 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 265 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:04,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 314 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2023-11-19 05:14:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-19 05:14:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 188. [2023-11-19 05:14:04,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 181 states have (on average 1.1823204419889504) internal successors, (214), 183 states have internal predecessors, (214), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:14:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 221 transitions. [2023-11-19 05:14:04,951 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 221 transitions. Word has length 81 [2023-11-19 05:14:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:04,952 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 221 transitions. [2023-11-19 05:14:04,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:14:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 221 transitions. [2023-11-19 05:14:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 05:14:04,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:04,955 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 05:14:04,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:05,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:14:05,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:14:05,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:14:05,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1849074607, now seen corresponding path program 1 times [2023-11-19 05:14:05,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:14:05,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599159562] [2023-11-19 05:14:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:05,361 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 05:14:05,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:14:05,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:14:05,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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)] Waiting until timeout for monitored process [2023-11-19 05:14:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:05,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:14:05,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:14:06,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:14:06,121 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:14:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599159562] [2023-11-19 05:14:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599159562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374182155] [2023-11-19 05:14:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:06,122 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:14:06,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:14:06,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:14:06,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-19 05:14:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:06,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:14:06,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:14:06,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:14:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [374182155] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902973586] [2023-11-19 05:14:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:06,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:06,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:06,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:07,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 05:14:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:07,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:14:07,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:14:07,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:14:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902973586] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:08,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:14:08,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-11-19 05:14:08,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340280203] [2023-11-19 05:14:08,200 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:14:08,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:14:08,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:14:08,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:14:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:14:08,204 INFO L87 Difference]: Start difference. First operand 188 states and 221 transitions. Second operand has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:14:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:10,062 INFO L93 Difference]: Finished difference Result 404 states and 489 transitions. [2023-11-19 05:14:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:14:10,063 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 4 states have call successors, (7), 2 states have call predecessors, (7), 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 05:14:10,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:10,067 INFO L225 Difference]: With dead ends: 404 [2023-11-19 05:14:10,067 INFO L226 Difference]: Without dead ends: 404 [2023-11-19 05:14:10,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:14:10,068 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 456 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:10,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1825 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 05:14:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-19 05:14:10,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 402. [2023-11-19 05:14:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 391 states have (on average 1.19693094629156) internal successors, (468), 393 states have internal predecessors, (468), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 05:14:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 484 transitions. [2023-11-19 05:14:10,090 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 484 transitions. Word has length 83 [2023-11-19 05:14:10,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:10,090 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 484 transitions. [2023-11-19 05:14:10,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.583333333333332) internal successors, (211), 12 states have internal predecessors, (211), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:14:10,091 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 484 transitions. [2023-11-19 05:14:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-19 05:14:10,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:10,098 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 05:14:10,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:10,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:10,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:10,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 05:14:10,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:14:10,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash 870976056, now seen corresponding path program 1 times [2023-11-19 05:14:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:14:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147450612] [2023-11-19 05:14:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:10,727 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 05:14:10,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:14:10,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:14:10,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 (11)] Waiting until timeout for monitored process [2023-11-19 05:14:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:12,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:14:12,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:14:12,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-19 05:14:12,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:14:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147450612] [2023-11-19 05:14:12,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147450612] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:12,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803501901] [2023-11-19 05:14:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:12,477 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:14:12,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:14:12,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:14:12,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-19 05:14:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:14,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:14:14,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:14:14,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-19 05:14:14,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1803501901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752111495] [2023-11-19 05:14:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:14,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:14,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:14,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:14,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 05:14:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:15,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:14:15,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-19 05:14:16,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-19 05:14:16,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752111495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:16,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:14:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-11-19 05:14:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545698437] [2023-11-19 05:14:16,409 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:14:16,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 05:14:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:14:16,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 05:14:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:14:16,413 INFO L87 Difference]: Start difference. First operand 402 states and 484 transitions. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:14:18,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:18,187 INFO L93 Difference]: Finished difference Result 428 states and 531 transitions. [2023-11-19 05:14:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 05:14:18,189 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 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 05:14:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:18,193 INFO L225 Difference]: With dead ends: 428 [2023-11-19 05:14:18,193 INFO L226 Difference]: Without dead ends: 422 [2023-11-19 05:14:18,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 05:14:18,196 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 41 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:18,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1579 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:14:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-19 05:14:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2023-11-19 05:14:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 403 states have (on average 1.2009925558312655) internal successors, (484), 405 states have internal predecessors, (484), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-19 05:14:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 500 transitions. [2023-11-19 05:14:18,217 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 500 transitions. Word has length 252 [2023-11-19 05:14:18,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:18,218 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 500 transitions. [2023-11-19 05:14:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (4), 2 states have call predecessors, (4), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:14:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 500 transitions. [2023-11-19 05:14:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-19 05:14:18,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:18,223 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 05:14:18,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:18,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:18,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:18,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:18,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:14:18,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash -884073096, now seen corresponding path program 2 times [2023-11-19 05:14:18,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:14:18,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435531450] [2023-11-19 05:14:18,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:14:18,841 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 05:14:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:14:18,842 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 05:14:18,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/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 (14)] Waiting until timeout for monitored process [2023-11-19 05:14:20,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:14:20,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:14:20,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:14:20,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 05:14:20,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-19 05:14:21,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:14:21,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435531450] [2023-11-19 05:14:21,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435531450] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:21,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2014133886] [2023-11-19 05:14:21,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:14:21,600 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:14:21,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:14:21,601 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:14:21,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-11-19 05:14:23,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:14:23,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:14:23,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:14:23,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 05:14:23,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-19 05:14:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2014133886] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:24,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104061700] [2023-11-19 05:14:24,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:14:24,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:14:24,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:24,145 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:14:24,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e0e43a-aedb-411d-8d6a-f5ab4cc7828a/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 05:14:25,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:14:25,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:14:25,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:14:25,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-19 05:14:26,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:14:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-19 05:14:28,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104061700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:14:28,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:14:28,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-11-19 05:14:28,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658385030] [2023-11-19 05:14:28,055 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:14:28,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-19 05:14:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:14:28,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-19 05:14:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 05:14:28,061 INFO L87 Difference]: Start difference. First operand 414 states and 500 transitions. Second operand has 36 states, 36 states have (on average 16.61111111111111) internal successors, (598), 36 states have internal predecessors, (598), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8)