./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:47:21,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:47:21,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:47:21,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:47:21,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:47:22,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:47:22,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:47:22,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:47:22,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:47:22,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:47:22,009 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:47:22,010 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:47:22,010 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:47:22,011 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:47:22,011 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:47:22,012 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:47:22,012 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:47:22,013 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:47:22,014 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:47:22,014 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:47:22,015 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:47:22,016 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:47:22,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:47:22,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:47:22,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:47:22,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:47:22,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:47:22,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:47:22,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:47:22,021 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:47:22,021 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:47:22,022 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:47:22,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:47:22,023 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:47:22,023 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:47:22,024 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:47:22,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:47:22,025 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:47:22,025 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:47:22,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:22,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:47:22,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:47:22,027 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:47:22,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:47:22,028 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:47:22,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:47:22,029 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_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2023-11-12 00:47:22,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:47:22,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:47:22,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:47:22,409 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:47:22,411 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:47:22,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2023-11-12 00:47:25,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:47:25,963 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:47:25,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2023-11-12 00:47:25,995 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data/467fe9d3f/929fe4acd411406e952389ec7bc3f37c/FLAG4b5e62d66 [2023-11-12 00:47:26,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data/467fe9d3f/929fe4acd411406e952389ec7bc3f37c [2023-11-12 00:47:26,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:47:26,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:47:26,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:26,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:47:26,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:47:26,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:26,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be7e269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:26, skipping insertion in model container [2023-11-12 00:47:26,037 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:26" (1/1) ... [2023-11-12 00:47:26,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:27,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:27,133 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 00:47:27,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67e61f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:27, skipping insertion in model container [2023-11-12 00:47:27,134 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:27,135 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:47:27,137 INFO L158 Benchmark]: Toolchain (without parser) took 1109.04ms. Allocated memory is still 163.6MB. Free memory was 112.9MB in the beginning and 84.1MB in the end (delta: 28.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 00:47:27,137 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 163.6MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:47:27,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1106.32ms. Allocated memory is still 163.6MB. Free memory was 112.7MB in the beginning and 84.1MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 00:47:27,140 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 163.6MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1106.32ms. Allocated memory is still 163.6MB. Free memory was 112.7MB in the beginning and 84.1MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:47:29,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:47:29,941 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:47:29,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:47:29,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:47:30,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:47:30,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:47:30,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:47:30,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:47:30,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:47:30,021 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:47:30,021 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:47:30,022 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:47:30,024 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:47:30,024 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:47:30,025 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:47:30,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:47:30,026 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:47:30,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:47:30,028 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:47:30,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:47:30,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:47:30,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:47:30,031 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:47:30,031 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:47:30,032 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:47:30,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:47:30,033 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:47:30,033 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:47:30,034 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:47:30,035 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:47:30,036 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:47:30,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:47:30,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:47:30,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:47:30,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:47:30,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:30,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:47:30,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:47:30,039 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:47:30,039 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:47:30,040 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:47:30,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:47:30,040 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_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce6a3162e09155ad765d255c42023f1cbec9d995c66c63f43c14fadd8640484e [2023-11-12 00:47:30,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:47:30,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:47:30,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:47:30,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:47:30,527 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:47:30,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2023-11-12 00:47:33,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:47:34,386 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:47:34,387 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-1.i [2023-11-12 00:47:34,408 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data/715a765cf/71c821f041cd48ac87169636b8389320/FLAG862fc2aa5 [2023-11-12 00:47:34,431 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/data/715a765cf/71c821f041cd48ac87169636b8389320 [2023-11-12 00:47:34,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:47:34,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:47:34,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:34,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:47:34,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:47:34,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:34" (1/1) ... [2023-11-12 00:47:34,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22470ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:34, skipping insertion in model container [2023-11-12 00:47:34,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:47:34" (1/1) ... [2023-11-12 00:47:34,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:35,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:35,638 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:47:35,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:47:35,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:35,790 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:47:35,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:47:35,962 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:47:35,970 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:47:35,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35 WrapperNode [2023-11-12 00:47:35,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:47:35,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:35,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:47:35,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:47:35,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,031 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,164 INFO L138 Inliner]: procedures = 180, calls = 525, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2203 [2023-11-12 00:47:36,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:47:36,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:47:36,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:47:36,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:47:36,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,193 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:47:36,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:47:36,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:47:36,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:47:36,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (1/1) ... [2023-11-12 00:47:36,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:47:36,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:47:36,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:47:36,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:47:36,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:47:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-12 00:47:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-12 00:47:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:47:36,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:47:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:47:36,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:47:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:47:36,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:47:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:47:36,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:47:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:47:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:47:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:47:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:47:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:47:36,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:47:36,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:47:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:47:36,941 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:47:36,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:47:36,948 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:47:47,451 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:47:47,476 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:47:47,476 INFO L302 CfgBuilder]: Removed 151 assume(true) statements. [2023-11-12 00:47:47,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:47 BoogieIcfgContainer [2023-11-12 00:47:47,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:47:47,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:47:47,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:47:47,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:47:47,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:47:34" (1/3) ... [2023-11-12 00:47:47,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645c19a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:47, skipping insertion in model container [2023-11-12 00:47:47,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:47:35" (2/3) ... [2023-11-12 00:47:47,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645c19a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:47:47, skipping insertion in model container [2023-11-12 00:47:47,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:47:47" (3/3) ... [2023-11-12 00:47:47,491 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-1.i [2023-11-12 00:47:47,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:47:47,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2023-11-12 00:47:47,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:47:47,600 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;@2c0132a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:47:47,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2023-11-12 00:47:47,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 2080 states, 1078 states have (on average 2.1808905380333954) internal successors, (2351), 2066 states have internal predecessors, (2351), 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 00:47:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:47:47,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:47,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:47:47,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-12 00:47:47,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:47,624 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2023-11-12 00:47:47,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:47,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561016665] [2023-11-12 00:47:47,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:47,638 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 00:47:47,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:47,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:47:47,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:47:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:47,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:47:47,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:47,957 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 00:47:47,976 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 00:47:47,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:47:47,977 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:47:47,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561016665] [2023-11-12 00:47:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561016665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:47,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:47,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:47:47,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465297853] [2023-11-12 00:47:47,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:47,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:47:47,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:47:48,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:47:48,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:47:48,038 INFO L87 Difference]: Start difference. First operand has 2080 states, 1078 states have (on average 2.1808905380333954) internal successors, (2351), 2066 states have internal predecessors, (2351), 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 00:47:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:47:53,027 INFO L93 Difference]: Finished difference Result 2583 states and 2746 transitions. [2023-11-12 00:47:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:47:53,030 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 00:47:53,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:47:53,064 INFO L225 Difference]: With dead ends: 2583 [2023-11-12 00:47:53,064 INFO L226 Difference]: Without dead ends: 2581 [2023-11-12 00:47:53,066 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 00:47:53,071 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 1967 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:47:53,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 1666 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-12 00:47:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2023-11-12 00:47:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2228. [2023-11-12 00:47:53,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1250 states have (on average 2.0144) internal successors, (2518), 2212 states have internal predecessors, (2518), 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 00:47:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2550 transitions. [2023-11-12 00:47:53,213 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2550 transitions. Word has length 3 [2023-11-12 00:47:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:47:53,214 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 2550 transitions. [2023-11-12 00:47:53,214 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 00:47:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2550 transitions. [2023-11-12 00:47:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:47:53,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:47:53,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:47:53,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:47:53,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:47:53,428 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-12 00:47:53,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:47:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2023-11-12 00:47:53,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:47:53,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383588360] [2023-11-12 00:47:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:47:53,432 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 00:47:53,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:47:53,434 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:47:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:47:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:47:53,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:47:53,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:47:53,677 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 00:47:53,691 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 00:47:53,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:47:53,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:47:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383588360] [2023-11-12 00:47:53,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383588360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:47:53,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:47:53,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:47:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024299771] [2023-11-12 00:47:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:47:53,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:47:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:47:53,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:47:53,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:47:53,703 INFO L87 Difference]: Start difference. First operand 2228 states and 2550 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 00:48:01,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:01,379 INFO L93 Difference]: Finished difference Result 3011 states and 3414 transitions. [2023-11-12 00:48:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:48:01,381 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 00:48:01,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:01,399 INFO L225 Difference]: With dead ends: 3011 [2023-11-12 00:48:01,399 INFO L226 Difference]: Without dead ends: 3011 [2023-11-12 00:48:01,399 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 00:48:01,401 INFO L413 NwaCegarLoop]: 1850 mSDtfsCounter, 856 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:01,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3047 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-12 00:48:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2023-11-12 00:48:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2689. [2023-11-12 00:48:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 1709 states have (on average 1.97366881217086) internal successors, (3373), 2670 states have internal predecessors, (3373), 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 00:48:01,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 3411 transitions. [2023-11-12 00:48:01,492 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 3411 transitions. Word has length 3 [2023-11-12 00:48:01,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:01,492 INFO L495 AbstractCegarLoop]: Abstraction has 2689 states and 3411 transitions. [2023-11-12 00:48:01,493 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 00:48:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 3411 transitions. [2023-11-12 00:48:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:48:01,493 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:01,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:01,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:48:01,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:48:01,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-12 00:48:01,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2023-11-12 00:48:01,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:01,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727956233] [2023-11-12 00:48:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:01,696 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 00:48:01,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:01,736 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:48:01,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:48:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:01,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:48:01,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:02,010 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 00:48:02,019 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 00:48:02,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:48:02,092 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 00:48:02,117 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:48:02,117 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 00:48:02,148 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 00:48:02,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:02,148 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:02,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727956233] [2023-11-12 00:48:02,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727956233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:02,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:02,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:48:02,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093526135] [2023-11-12 00:48:02,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:02,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:48:02,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:48:02,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:48:02,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:48:02,155 INFO L87 Difference]: Start difference. First operand 2689 states and 3411 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) [2023-11-12 00:48:14,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:48:14,648 INFO L93 Difference]: Finished difference Result 4969 states and 5841 transitions. [2023-11-12 00:48:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:48:14,649 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 7 [2023-11-12 00:48:14,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:48:14,679 INFO L225 Difference]: With dead ends: 4969 [2023-11-12 00:48:14,680 INFO L226 Difference]: Without dead ends: 4969 [2023-11-12 00:48:14,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:48:14,683 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 4346 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4356 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:48:14,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4356 Valid, 2098 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2023-11-12 00:48:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2023-11-12 00:48:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 3421. [2023-11-12 00:48:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 2441 states have (on average 2.011880376894715) internal successors, (4911), 3396 states have internal predecessors, (4911), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-12 00:48:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4961 transitions. [2023-11-12 00:48:14,801 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4961 transitions. Word has length 7 [2023-11-12 00:48:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:48:14,802 INFO L495 AbstractCegarLoop]: Abstraction has 3421 states and 4961 transitions. [2023-11-12 00:48:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-12 00:48:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4961 transitions. [2023-11-12 00:48:14,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:48:14,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:48:14,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:48:14,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:48:15,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:48:15,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 987 more)] === [2023-11-12 00:48:15,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:48:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2023-11-12 00:48:15,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:48:15,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047528156] [2023-11-12 00:48:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:48:15,024 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 00:48:15,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:48:15,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 00:48:15,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac6158a5-d4fb-47f1-b0c9-04fac00e61e2/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 (5)] Waiting until timeout for monitored process [2023-11-12 00:48:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:48:15,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:48:15,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:48:15,244 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 00:48:15,263 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 00:48:15,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:48:15,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:48:15,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047528156] [2023-11-12 00:48:15,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047528156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:48:15,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:48:15,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:48:15,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078711714] [2023-11-12 00:48:15,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:48:15,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:48:15,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:48:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:48:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:48:15,267 INFO L87 Difference]: Start difference. First operand 3421 states and 4961 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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)