./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:46:53,229 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:46:53,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:46:53,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:46:53,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:46:53,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:46:53,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:46:53,386 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:46:53,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:46:53,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:46:53,393 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:46:53,394 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:46:53,394 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:46:53,396 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:46:53,396 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:46:53,397 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:46:53,397 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:46:53,398 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:46:53,398 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:46:53,399 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:46:53,399 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:46:53,400 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:46:53,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:46:53,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:46:53,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:46:53,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:46:53,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:46:53,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:46:53,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:46:53,404 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:46:53,405 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:46:53,406 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:46:53,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:46:53,406 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:46:53,407 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:46:53,407 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:46:53,407 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:46:53,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:46:53,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:46:53,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:46:53,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:46:53,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:46:53,409 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:46:53,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:46:53,410 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:46:53,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:46:53,411 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_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2023-11-12 00:46:53,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:46:53,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:46:53,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:46:53,715 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:46:53,716 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:46:53,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2023-11-12 00:46:56,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:46:57,255 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:46:57,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2023-11-12 00:46:57,294 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data/76fd01b9e/839c2ffd0ed041cda4d176bbe0005c59/FLAG30bb2c20b [2023-11-12 00:46:57,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data/76fd01b9e/839c2ffd0ed041cda4d176bbe0005c59 [2023-11-12 00:46:57,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:46:57,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:46:57,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:57,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:46:57,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:46:57,334 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:57" (1/1) ... [2023-11-12 00:46:57,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eb084ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:57, skipping insertion in model container [2023-11-12 00:46:57,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:46:57" (1/1) ... [2023-11-12 00:46:57,432 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:46:58,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:46:58,356 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) [2023-11-12 00:46:58,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6fb4e380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:46:58, skipping insertion in model container [2023-11-12 00:46:58,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:46:58,363 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:46:58,365 INFO L158 Benchmark]: Toolchain (without parser) took 1042.09ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 116.6MB in the end (delta: -10.8MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2023-11-12 00:46:58,367 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:46:58,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1035.18ms. Allocated memory is still 151.0MB. Free memory was 105.4MB in the beginning and 116.6MB in the end (delta: -11.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2023-11-12 00:46:58,370 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1035.18ms. Allocated memory is still 151.0MB. Free memory was 105.4MB in the beginning and 116.6MB in the end (delta: -11.2MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:47:00,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:47:00,912 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:47:00,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:47:00,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:47:00,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:47:00,954 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:47:00,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:47:00,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:47:00,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:47:00,957 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:47:00,958 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:47:00,958 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:47:00,959 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:47:00,959 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:47:00,960 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:47:00,961 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:47:00,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:47:00,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:47:00,963 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:47:00,963 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:47:00,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:47:00,964 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:47:00,965 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:47:00,965 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:47:00,966 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:47:00,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:47:00,966 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:47:00,967 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:47:00,967 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:47:00,968 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:47:00,968 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:47:00,968 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:47:00,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:47:00,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:47:00,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:47:00,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:00,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:47:00,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:47:00,970 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:47:00,970 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:47:00,971 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:47:00,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:47:00,971 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_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2023-11-12 00:47:01,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:47:01,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:47:01,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:47:01,399 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:47:01,400 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:47:01,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2023-11-12 00:47:04,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:47:05,005 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:47:05,007 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2023-11-12 00:47:05,036 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data/2fa96e36c/3919c0a406ed47cb9961ea7cb2b704f7/FLAGc1517965c [2023-11-12 00:47:05,055 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/data/2fa96e36c/3919c0a406ed47cb9961ea7cb2b704f7 [2023-11-12 00:47:05,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:47:05,066 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:47:05,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:05,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:47:05,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:47:05,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:05" (1/1) ... [2023-11-12 00:47:05,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0c38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:05, skipping insertion in model container [2023-11-12 00:47:05,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:05" (1/1) ... [2023-11-12 00:47:05,169 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:06,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:06,088 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:47:06,129 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:06,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:06,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:47:06,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:06,593 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:06,601 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:47:06,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06 WrapperNode [2023-11-12 00:47:06,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:06,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:06,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:47:06,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:47:06,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:06,699 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:06,816 INFO L138 Inliner]: procedures = 180, calls = 624, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2517 [2023-11-12 00:47:06,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:06,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:47:06,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:47:06,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:47:06,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:06,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:06,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:06,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:07,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:07,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:07,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:07,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:07,106 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:47:07,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:47:07,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:47:07,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:47:07,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (1/1) ... [2023-11-12 00:47:07,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:07,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:47:07,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:47:07,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:47:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:47:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-12 00:47:07,202 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-12 00:47:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:47:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:47:07,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:47:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:47:07,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:47:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:47:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:47:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:47:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:47:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:47:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:47:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:47:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:47:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:47:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:47:07,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:47:07,543 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:47:07,545 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:47:07,549 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:47:18,742 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:47:18,765 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:47:18,765 INFO L302 CfgBuilder]: Removed 168 assume(true) statements. [2023-11-12 00:47:18,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:18 BoogieIcfgContainer [2023-11-12 00:47:18,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:47:18,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:47:18,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:47:18,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:47:18,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:47:05" (1/3) ... [2023-11-12 00:47:18,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a0f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:18, skipping insertion in model container [2023-11-12 00:47:18,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:06" (2/3) ... [2023-11-12 00:47:18,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532a0f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:18, skipping insertion in model container [2023-11-12 00:47:18,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:18" (3/3) ... [2023-11-12 00:47:18,782 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2023-11-12 00:47:18,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:47:18,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2023-11-12 00:47:18,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:47:18,917 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;@11c8da31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:47:18,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2023-11-12 00:47:18,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 2461 states, 1256 states have (on average 2.2038216560509554) internal successors, (2768), 2447 states have internal predecessors, (2768), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-12 00:47:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:47:18,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:18,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:47:18,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-12 00:47:18,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2023-11-12 00:47:18,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:18,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401952733] [2023-11-12 00:47:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:18,957 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 [2023-11-12 00:47:18,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:18,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:47:18,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:47:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:19,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:47:19,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:19,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:47:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:19,440 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:47:19,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:47:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401952733] [2023-11-12 00:47:19,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401952733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:19,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:19,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:47:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073762561] [2023-11-12 00:47:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:19,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:47:19,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:47:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:47:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:47:19,502 INFO L87 Difference]: Start difference. First operand has 2461 states, 1256 states have (on average 2.2038216560509554) internal successors, (2768), 2447 states have internal predecessors, (2768), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:25,379 INFO L93 Difference]: Finished difference Result 3314 states and 3513 transitions. [2023-11-12 00:47:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:47:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:47:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:25,421 INFO L225 Difference]: With dead ends: 3314 [2023-11-12 00:47:25,421 INFO L226 Difference]: Without dead ends: 3312 [2023-11-12 00:47:25,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:47:25,427 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 2338 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:25,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 2261 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-12 00:47:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2023-11-12 00:47:25,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 2609. [2023-11-12 00:47:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2609 states, 1428 states have (on average 2.0434173669467786) internal successors, (2918), 2593 states have internal predecessors, (2918), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-12 00:47:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2609 states to 2609 states and 2950 transitions. [2023-11-12 00:47:25,616 INFO L78 Accepts]: Start accepts. Automaton has 2609 states and 2950 transitions. Word has length 3 [2023-11-12 00:47:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:25,616 INFO L495 AbstractCegarLoop]: Abstraction has 2609 states and 2950 transitions. [2023-11-12 00:47:25,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2609 states and 2950 transitions. [2023-11-12 00:47:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:47:25,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:25,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:47:25,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:47:25,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:47:25,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-12 00:47:25,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2023-11-12 00:47:25,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:25,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228815387] [2023-11-12 00:47:25,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:25,827 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 [2023-11-12 00:47:25,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:25,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:47:25,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:47:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:26,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:47:26,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:26,065 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:47:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:26,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:47:26,077 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:47:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228815387] [2023-11-12 00:47:26,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228815387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:26,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:47:26,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404514465] [2023-11-12 00:47:26,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:47:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:47:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:47:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:47:26,088 INFO L87 Difference]: Start difference. First operand 2609 states and 2950 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:34,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:34,692 INFO L93 Difference]: Finished difference Result 3773 states and 4214 transitions. [2023-11-12 00:47:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:47:34,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:47:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:34,714 INFO L225 Difference]: With dead ends: 3773 [2023-11-12 00:47:34,714 INFO L226 Difference]: Without dead ends: 3773 [2023-11-12 00:47:34,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:47:34,716 INFO L413 NwaCegarLoop]: 2062 mSDtfsCounter, 1256 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 1695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:34,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 3471 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1695 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-11-12 00:47:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2023-11-12 00:47:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3070. [2023-11-12 00:47:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3070 states, 1887 states have (on average 1.9994700582935878) internal successors, (3773), 3051 states have internal predecessors, (3773), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 00:47:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3070 states to 3070 states and 3811 transitions. [2023-11-12 00:47:34,811 INFO L78 Accepts]: Start accepts. Automaton has 3070 states and 3811 transitions. Word has length 3 [2023-11-12 00:47:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:34,812 INFO L495 AbstractCegarLoop]: Abstraction has 3070 states and 3811 transitions. [2023-11-12 00:47:34,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:47:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 3070 states and 3811 transitions. [2023-11-12 00:47:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:47:34,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:34,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:47:34,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:47:35,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:47:35,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-12 00:47:35,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2023-11-12 00:47:35,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221376691] [2023-11-12 00:47:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:35,027 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 [2023-11-12 00:47:35,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:35,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:47:35,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2a172e1-cf78-4c0e-b51d-16b230d7ae3a/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:47:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:35,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:47:35,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:35,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 00:47:35,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 00:47:35,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:47:35,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 00:47:35,423 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:47:35,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 00:47:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:47:35,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:47:35,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:47:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221376691] [2023-11-12 00:47:35,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221376691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:35,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:35,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:47:35,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577969344] [2023-11-12 00:47:35,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:35,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:47:35,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:47:35,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:47:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:47:35,451 INFO L87 Difference]: Start difference. First operand 3070 states and 3811 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)