./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:30,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:30,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:24:30,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:30,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:30,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:30,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:30,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:30,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:30,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:30,930 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:30,931 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:30,931 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:30,932 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:24:30,932 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:30,933 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:30,933 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:24:30,934 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:24:30,934 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:30,935 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:24:30,935 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:24:30,939 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:24:30,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:24:30,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:24:30,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:30,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:30,942 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:24:30,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:30,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:24:30,944 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:30,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:30,946 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:24:30,946 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:24:30,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:30,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:30,947 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:24:30,947 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:24:30,947 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:24:30,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:30,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:30,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:30,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:30,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:30,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:30,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:30,950 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:24:30,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:24:30,951 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:30,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:30,952 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_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2023-11-19 05:24:31,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:31,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:31,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:31,271 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:31,271 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:31,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-19 05:24:34,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:35,138 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:35,139 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-19 05:24:35,163 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data/a6fbe34d2/d422e53924874d24a976afa99fbbf370/FLAGee3791aa2 [2023-11-19 05:24:35,181 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data/a6fbe34d2/d422e53924874d24a976afa99fbbf370 [2023-11-19 05:24:35,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:35,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:35,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:35,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:35,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:35,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:35" (1/1) ... [2023-11-19 05:24:35,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a21ec22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:35, skipping insertion in model container [2023-11-19 05:24:35,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:35" (1/1) ... [2023-11-19 05:24:35,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:36,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:36,224 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 05:24:36,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56a7ab6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:36, skipping insertion in model container [2023-11-19 05:24:36,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:36,226 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:24:36,228 INFO L158 Benchmark]: Toolchain (without parser) took 1031.52ms. Allocated memory is still 163.6MB. Free memory was 126.8MB in the beginning and 103.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 05:24:36,229 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 163.6MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:24:36,230 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1028.18ms. Allocated memory is still 163.6MB. Free memory was 126.1MB in the beginning and 103.8MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:24:36,232 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 163.6MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1028.18ms. Allocated memory is still 163.6MB. Free memory was 126.1MB in the beginning and 103.8MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:24:39,111 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:24:39,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:24:39,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:24:39,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:24:39,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:24:39,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:24:39,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:24:39,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:24:39,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:24:39,272 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:24:39,272 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:24:39,273 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:24:39,274 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:24:39,274 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:24:39,275 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:24:39,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:24:39,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:24:39,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:24:39,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:24:39,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:24:39,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:24:39,281 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:24:39,281 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:24:39,282 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:24:39,282 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:24:39,283 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:24:39,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:24:39,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:24:39,285 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:24:39,285 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:24:39,286 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:24:39,287 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:24:39,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:24:39,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:24:39,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:24:39,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:24:39,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:24:39,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:24:39,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:39,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:24:39,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:24:39,293 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:24:39,293 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:24:39,294 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:24:39,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:24:39,295 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_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2023-11-19 05:24:39,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:24:39,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:24:39,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:24:39,794 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:24:39,799 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:24:39,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-19 05:24:43,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:24:44,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:24:44,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2023-11-19 05:24:44,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data/749dcf61c/693030ac53db413bbccfe614cc4160b2/FLAGc48543652 [2023-11-19 05:24:44,135 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/data/749dcf61c/693030ac53db413bbccfe614cc4160b2 [2023-11-19 05:24:44,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:24:44,141 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:24:44,142 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:44,143 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:24:44,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:24:44,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:44" (1/1) ... [2023-11-19 05:24:44,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29575a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:44, skipping insertion in model container [2023-11-19 05:24:44,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:24:44" (1/1) ... [2023-11-19 05:24:44,262 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:45,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:45,601 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:24:45,629 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:24:45,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:45,814 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:24:45,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:24:46,038 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:24:46,045 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:24:46,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46 WrapperNode [2023-11-19 05:24:46,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:24:46,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:46,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:24:46,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:24:46,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,178 INFO L138 Inliner]: procedures = 285, calls = 351, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1207 [2023-11-19 05:24:46,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:24:46,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:24:46,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:24:46,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:24:46,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:24:46,325 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:24:46,325 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:24:46,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:24:46,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (1/1) ... [2023-11-19 05:24:46,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:24:46,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:24:46,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:24:46,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:24:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 05:24:46,457 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 05:24:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:24:46,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:24:46,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:24:46,460 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 05:24:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:24:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:24:46,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-19 05:24:46,462 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-19 05:24:46,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:24:46,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:24:46,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:24:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:24:46,464 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-19 05:24:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-19 05:24:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:24:46,465 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-19 05:24:46,465 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-19 05:24:46,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:24:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:24:46,788 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:24:46,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:24:54,884 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:24:54,897 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:24:54,897 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-19 05:24:54,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:54 BoogieIcfgContainer [2023-11-19 05:24:54,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:24:54,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:24:54,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:24:54,910 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:24:54,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:24:44" (1/3) ... [2023-11-19 05:24:54,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e414bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:54, skipping insertion in model container [2023-11-19 05:24:54,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:24:46" (2/3) ... [2023-11-19 05:24:54,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e414bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:24:54, skipping insertion in model container [2023-11-19 05:24:54,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:24:54" (3/3) ... [2023-11-19 05:24:54,914 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2023-11-19 05:24:54,932 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:24:54,933 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:24:54,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:24:54,987 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;@1496c3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:24:55,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:24:55,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 269 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 05:24:55,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:24:55,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:55,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:55,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:24:55,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:55,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1647492033, now seen corresponding path program 1 times [2023-11-19 05:24:55,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:24:55,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31687293] [2023-11-19 05:24:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:55,065 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 05:24:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:24:55,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:24:55,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:24:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:55,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:24:55,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:55,383 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 05:24:55,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:24:55,384 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:24:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31687293] [2023-11-19 05:24:55,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31687293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:55,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:55,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:24:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515301558] [2023-11-19 05:24:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:55,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:24:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:24:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:24:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:24:55,434 INFO L87 Difference]: Start difference. First operand has 269 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:24:55,506 INFO L93 Difference]: Finished difference Result 264 states and 342 transitions. [2023-11-19 05:24:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:24:55,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 05:24:55,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:24:55,534 INFO L225 Difference]: With dead ends: 264 [2023-11-19 05:24:55,534 INFO L226 Difference]: Without dead ends: 262 [2023-11-19 05:24:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:24:55,543 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:24:55,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:24:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-19 05:24:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-11-19 05:24:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 237 states have (on average 1.2911392405063291) internal successors, (306), 242 states have internal predecessors, (306), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 05:24:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 340 transitions. [2023-11-19 05:24:55,633 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 340 transitions. Word has length 10 [2023-11-19 05:24:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:24:55,634 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 340 transitions. [2023-11-19 05:24:55,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 340 transitions. [2023-11-19 05:24:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:24:55,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:24:55,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:24:55,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:24:55,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:24:55,840 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:24:55,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:24:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash -617339998, now seen corresponding path program 1 times [2023-11-19 05:24:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:24:55,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871324315] [2023-11-19 05:24:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:24:55,842 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 05:24:55,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:24:55,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:24:55,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:24:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:24:56,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:24:56,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:24:56,212 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 05:24:56,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:24:56,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:24:56,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871324315] [2023-11-19 05:24:56,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871324315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:24:56,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:24:56,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:24:56,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721424528] [2023-11-19 05:24:56,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:24:56,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:24:56,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:24:56,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:24:56,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:24:56,217 INFO L87 Difference]: Start difference. First operand 262 states and 340 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:24:59,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:25:01,759 WARN L539 Checker$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 05:25:04,492 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 05:25:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:05,254 INFO L93 Difference]: Finished difference Result 422 states and 551 transitions. [2023-11-19 05:25:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:25:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:25:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:05,261 INFO L225 Difference]: With dead ends: 422 [2023-11-19 05:25:05,261 INFO L226 Difference]: Without dead ends: 422 [2023-11-19 05:25:05,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:05,263 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 202 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:05,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 958 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 119 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2023-11-19 05:25:05,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-19 05:25:05,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 381. [2023-11-19 05:25:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 353 states have (on average 1.2946175637393769) internal successors, (457), 358 states have internal predecessors, (457), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 05:25:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 497 transitions. [2023-11-19 05:25:05,343 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 497 transitions. Word has length 12 [2023-11-19 05:25:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:05,344 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 497 transitions. [2023-11-19 05:25:05,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 497 transitions. [2023-11-19 05:25:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:25:05,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:05,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:05,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:05,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:05,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:25:05,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:05,551 INFO L85 PathProgramCache]: Analyzing trace with hash -919823020, now seen corresponding path program 1 times [2023-11-19 05:25:05,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:05,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836566623] [2023-11-19 05:25:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:05,553 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 05:25:05,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:05,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:05,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:05,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:25:05,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:05,904 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:25:05,906 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:25:05,907 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 05:25:05,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-19 05:25:06,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 05:25:06,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 05:25:06,081 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 05:25:06,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:06,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:06,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836566623] [2023-11-19 05:25:06,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836566623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:06,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:06,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:25:06,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92123866] [2023-11-19 05:25:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:06,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:25:06,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:25:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:25:06,089 INFO L87 Difference]: Start difference. First operand 381 states and 497 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:11,647 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 05:25:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:15,012 INFO L93 Difference]: Finished difference Result 508 states and 670 transitions. [2023-11-19 05:25:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:25:15,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:25:15,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:15,017 INFO L225 Difference]: With dead ends: 508 [2023-11-19 05:25:15,018 INFO L226 Difference]: Without dead ends: 508 [2023-11-19 05:25:15,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:25:15,020 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 185 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:15,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 884 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2023-11-19 05:25:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-19 05:25:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 380. [2023-11-19 05:25:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 352 states have (on average 1.2926136363636365) internal successors, (455), 357 states have internal predecessors, (455), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 05:25:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 495 transitions. [2023-11-19 05:25:15,043 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 495 transitions. Word has length 15 [2023-11-19 05:25:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:15,044 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 495 transitions. [2023-11-19 05:25:15,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 495 transitions. [2023-11-19 05:25:15,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:25:15,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:15,046 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] [2023-11-19 05:25:15,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:15,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:15,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:25:15,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2120572721, now seen corresponding path program 1 times [2023-11-19 05:25:15,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:15,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733013637] [2023-11-19 05:25:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:15,253 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 05:25:15,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:15,256 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:15,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:15,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:25:15,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:15,743 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 05:25:15,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:15,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:15,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733013637] [2023-11-19 05:25:15,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733013637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:15,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:15,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:25:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117628772] [2023-11-19 05:25:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:15,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:25:15,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:15,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:25:15,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:25:15,755 INFO L87 Difference]: Start difference. First operand 380 states and 495 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:15,926 INFO L93 Difference]: Finished difference Result 388 states and 487 transitions. [2023-11-19 05:25:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:25:15,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-19 05:25:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:15,929 INFO L225 Difference]: With dead ends: 388 [2023-11-19 05:25:15,930 INFO L226 Difference]: Without dead ends: 388 [2023-11-19 05:25:15,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 05:25:15,934 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 36 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:15,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 907 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:15,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-11-19 05:25:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 386. [2023-11-19 05:25:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 358 states have (on average 1.2430167597765363) internal successors, (445), 363 states have internal predecessors, (445), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 05:25:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 485 transitions. [2023-11-19 05:25:15,970 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 485 transitions. Word has length 50 [2023-11-19 05:25:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:15,971 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 485 transitions. [2023-11-19 05:25:15,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 485 transitions. [2023-11-19 05:25:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:25:15,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:15,978 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] [2023-11-19 05:25:15,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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)] Ended with exit code 0 [2023-11-19 05:25:16,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:16,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:25:16,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1719810523, now seen corresponding path program 1 times [2023-11-19 05:25:16,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:16,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283859791] [2023-11-19 05:25:16,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:16,186 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 05:25:16,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:16,187 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:16,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:16,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:25:16,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:16,626 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 05:25:16,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:16,626 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:16,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283859791] [2023-11-19 05:25:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283859791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:16,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:16,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:25:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895660917] [2023-11-19 05:25:16,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:16,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:25:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:25:16,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:25:16,628 INFO L87 Difference]: Start difference. First operand 386 states and 485 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:16,805 INFO L93 Difference]: Finished difference Result 396 states and 495 transitions. [2023-11-19 05:25:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:25:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-11-19 05:25:16,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:16,809 INFO L225 Difference]: With dead ends: 396 [2023-11-19 05:25:16,809 INFO L226 Difference]: Without dead ends: 396 [2023-11-19 05:25:16,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:25:16,810 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 13 mSDsluCounter, 1288 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:16,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1611 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-19 05:25:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2023-11-19 05:25:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 365 states have (on average 1.2410958904109588) internal successors, (453), 371 states have internal predecessors, (453), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-19 05:25:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 495 transitions. [2023-11-19 05:25:16,828 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 495 transitions. Word has length 50 [2023-11-19 05:25:16,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:16,828 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 495 transitions. [2023-11-19 05:25:16,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:25:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 495 transitions. [2023-11-19 05:25:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 05:25:16,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:16,830 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:25:16,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:17,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:17,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:25:17,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:17,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2051735363, now seen corresponding path program 1 times [2023-11-19 05:25:17,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:17,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912709480] [2023-11-19 05:25:17,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:17,039 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 05:25:17,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:17,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:17,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 (7)] Waiting until timeout for monitored process [2023-11-19 05:25:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:17,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:25:17,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:17,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:17,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:17,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912709480] [2023-11-19 05:25:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912709480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:17,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:17,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:25:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874128202] [2023-11-19 05:25:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:17,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:25:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:25:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:25:17,875 INFO L87 Difference]: Start difference. First operand 396 states and 495 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:25:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:18,218 INFO L93 Difference]: Finished difference Result 404 states and 505 transitions. [2023-11-19 05:25:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:25:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2023-11-19 05:25:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:18,223 INFO L225 Difference]: With dead ends: 404 [2023-11-19 05:25:18,223 INFO L226 Difference]: Without dead ends: 404 [2023-11-19 05:25:18,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:25:18,224 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 20 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:18,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1178 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:25:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-19 05:25:18,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 400. [2023-11-19 05:25:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 367 states have (on average 1.2397820163487738) internal successors, (455), 374 states have internal predecessors, (455), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (21), 19 states have call predecessors, (21), 20 states have call successors, (21) [2023-11-19 05:25:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 500 transitions. [2023-11-19 05:25:18,241 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 500 transitions. Word has length 65 [2023-11-19 05:25:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:18,242 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 500 transitions. [2023-11-19 05:25:18,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:25:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 500 transitions. [2023-11-19 05:25:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 05:25:18,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:18,250 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] [2023-11-19 05:25:18,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:18,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:25:18,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2090919877, now seen corresponding path program 1 times [2023-11-19 05:25:18,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:18,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654430888] [2023-11-19 05:25:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:18,459 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 05:25:18,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:18,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:18,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:19,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:25:19,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:19,069 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 05:25:19,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:19,069 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654430888] [2023-11-19 05:25:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654430888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:19,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:25:19,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:25:19,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38759647] [2023-11-19 05:25:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:19,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:25:19,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:19,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:25:19,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:25:19,074 INFO L87 Difference]: Start difference. First operand 400 states and 500 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:25:19,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:19,156 INFO L93 Difference]: Finished difference Result 404 states and 505 transitions. [2023-11-19 05:25:19,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:25:19,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 70 [2023-11-19 05:25:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:19,160 INFO L225 Difference]: With dead ends: 404 [2023-11-19 05:25:19,161 INFO L226 Difference]: Without dead ends: 404 [2023-11-19 05:25:19,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 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 05:25:19,162 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:19,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 970 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:25:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2023-11-19 05:25:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2023-11-19 05:25:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 370 states have (on average 1.2405405405405405) internal successors, (459), 378 states have internal predecessors, (459), 24 states have call successors, (24), 7 states have call predecessors, (24), 8 states have return successors, (22), 19 states have call predecessors, (22), 20 states have call successors, (22) [2023-11-19 05:25:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 505 transitions. [2023-11-19 05:25:19,177 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 505 transitions. Word has length 70 [2023-11-19 05:25:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:19,178 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 505 transitions. [2023-11-19 05:25:19,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:25:19,178 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 505 transitions. [2023-11-19 05:25:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 05:25:19,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:19,179 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] [2023-11-19 05:25:19,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:19,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:19,393 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:25:19,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:19,393 INFO L85 PathProgramCache]: Analyzing trace with hash -731053154, now seen corresponding path program 1 times [2023-11-19 05:25:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:19,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843608458] [2023-11-19 05:25:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:19,394 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 05:25:19,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:19,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:19,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 05:25:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:19,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:25:19,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:20,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:25:20,221 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843608458] [2023-11-19 05:25:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843608458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:25:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [648982789] [2023-11-19 05:25:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:20,222 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:25:20,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:25:20,225 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:25:20,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-19 05:25:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:20,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 05:25:20,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:21,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:21,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:21,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [648982789] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:25:21,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858818600] [2023-11-19 05:25:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:21,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:21,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:21,939 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:21,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:25:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:22,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:25:22,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:25:22,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:25:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858818600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:25:22,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-19 05:25:22,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 7, 7] total 18 [2023-11-19 05:25:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676887134] [2023-11-19 05:25:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:25:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:25:22,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:25:22,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:25:22,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:25:22,498 INFO L87 Difference]: Start difference. First operand 404 states and 505 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:25:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:25:22,875 INFO L93 Difference]: Finished difference Result 1074 states and 1363 transitions. [2023-11-19 05:25:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:25:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2023-11-19 05:25:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:25:22,885 INFO L225 Difference]: With dead ends: 1074 [2023-11-19 05:25:22,885 INFO L226 Difference]: Without dead ends: 1074 [2023-11-19 05:25:22,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:25:22,886 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 599 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:25:22,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1684 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:25:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2023-11-19 05:25:22,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 987. [2023-11-19 05:25:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 919 states have (on average 1.2568008705114255) internal successors, (1155), 933 states have internal predecessors, (1155), 48 states have call successors, (48), 14 states have call predecessors, (48), 18 states have return successors, (50), 39 states have call predecessors, (50), 44 states have call successors, (50) [2023-11-19 05:25:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1253 transitions. [2023-11-19 05:25:22,941 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1253 transitions. Word has length 71 [2023-11-19 05:25:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:25:22,942 INFO L495 AbstractCegarLoop]: Abstraction has 987 states and 1253 transitions. [2023-11-19 05:25:22,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:25:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1253 transitions. [2023-11-19 05:25:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 05:25:22,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:25:22,945 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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 05:25:22,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:23,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:23,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:25:23,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:23,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:25:23,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:25:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1250845845, now seen corresponding path program 1 times [2023-11-19 05:25:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:25:23,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170358606] [2023-11-19 05:25:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:23,552 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 05:25:23,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:25:23,553 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/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 05:25:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 05:25:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:24,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:25:24,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:25:24,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 05:25:24,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:25:24,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170358606] [2023-11-19 05:25:24,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170358606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:25:24,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [77754015] [2023-11-19 05:25:24,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:24,595 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:25:24,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:25:24,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:25:24,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-19 05:25:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:25:25,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:25:25,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:25:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 05:25:26,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:25:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:25:26,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [77754015] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:25:26,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870316184] [2023-11-19 05:25:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:25:26,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:25:26,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:25:26,937 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:25:26,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adb81a72-0ebf-496e-a58d-76bb1e3cc635/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process