./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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_63090893-77d9-4eba-9009-1e0454be4f29/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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:57:33,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:57:33,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:57:33,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:57:33,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:57:33,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:57:33,918 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:57:33,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:57:33,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:57:33,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:57:33,928 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:57:33,929 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:57:33,930 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:57:33,932 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:57:33,932 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:57:33,933 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:57:33,933 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:57:33,934 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:57:33,934 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:57:33,934 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:57:33,935 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:57:33,936 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:57:33,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:57:33,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:57:33,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:57:33,938 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:57:33,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:57:33,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:57:33,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:57:33,940 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:57:33,941 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:57:33,942 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:57:33,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:57:33,942 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:57:33,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:57:33,943 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:57:33,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:57:33,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:57:33,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:57:33,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:33,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:57:33,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:57:33,945 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:57:33,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:57:33,945 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:57:33,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:57:33,946 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_63090893-77d9-4eba-9009-1e0454be4f29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2023-11-12 00:57:34,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:57:34,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:57:34,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:57:34,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:57:34,328 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:57:34,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-12 00:57:37,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:57:37,799 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:57:37,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-12 00:57:37,820 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data/291002a67/cb14d10b367e4ad98aec392418e7d418/FLAG27838f5a3 [2023-11-12 00:57:37,835 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data/291002a67/cb14d10b367e4ad98aec392418e7d418 [2023-11-12 00:57:37,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:57:37,839 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:57:37,840 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:37,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:57:37,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:57:37,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:37" (1/1) ... [2023-11-12 00:57:37,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42707814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:37, skipping insertion in model container [2023-11-12 00:57:37,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:37" (1/1) ... [2023-11-12 00:57:37,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:57:38,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:38,821 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 00:57:38,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ea915f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:38, skipping insertion in model container [2023-11-12 00:57:38,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:38,822 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:57:38,824 INFO L158 Benchmark]: Toolchain (without parser) took 984.46ms. Allocated memory is still 125.8MB. Free memory was 85.2MB in the beginning and 56.2MB in the end (delta: 29.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 00:57:38,825 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:57:38,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 982.00ms. Allocated memory is still 125.8MB. Free memory was 84.8MB in the beginning and 56.2MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-12 00:57:38,827 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 125.8MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 982.00ms. Allocated memory is still 125.8MB. Free memory was 84.8MB in the beginning and 56.2MB 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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_63090893-77d9-4eba-9009-1e0454be4f29/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 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:57:41,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:57:41,482 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:57:41,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:57:41,508 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:57:41,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:57:41,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:57:41,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:57:41,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:57:41,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:57:41,562 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:57:41,562 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:57:41,563 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:57:41,565 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:57:41,565 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:57:41,566 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:57:41,566 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:57:41,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:57:41,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:57:41,568 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:57:41,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:57:41,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:57:41,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:57:41,570 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:57:41,571 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:57:41,571 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:57:41,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:57:41,572 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:57:41,573 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:57:41,573 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:57:41,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:57:41,575 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:57:41,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:57:41,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:57:41,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:57:41,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:57:41,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:41,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:57:41,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:57:41,579 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:57:41,579 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:57:41,580 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:57:41,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:57:41,580 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_63090893-77d9-4eba-9009-1e0454be4f29/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c32e831c11e67575bf9fc4420a056c0795572e7218bcd99a0067a1a2caea6f7 [2023-11-12 00:57:41,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:57:42,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:57:42,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:57:42,027 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:57:42,028 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:57:42,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-12 00:57:45,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:57:45,961 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:57:45,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test10-1.i [2023-11-12 00:57:45,993 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data/d4efe251f/ab00134cb37340919cbc45067cb67226/FLAG2e05b3105 [2023-11-12 00:57:46,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/data/d4efe251f/ab00134cb37340919cbc45067cb67226 [2023-11-12 00:57:46,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:57:46,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:57:46,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:46,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:57:46,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:57:46,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:46" (1/1) ... [2023-11-12 00:57:46,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cce072e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:46, skipping insertion in model container [2023-11-12 00:57:46,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:57:46" (1/1) ... [2023-11-12 00:57:46,122 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:57:47,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:47,045 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:57:47,063 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:57:47,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:47,211 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:57:47,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:57:47,464 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:57:47,471 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:57:47,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47 WrapperNode [2023-11-12 00:57:47,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:57:47,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:47,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:57:47,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:57:47,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,658 INFO L138 Inliner]: procedures = 180, calls = 525, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2203 [2023-11-12 00:57:47,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:57:47,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:57:47,661 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:57:47,661 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:57:47,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,840 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:57:47,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:57:47,928 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:57:47,928 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:57:47,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (1/1) ... [2023-11-12 00:57:47,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:57:47,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:57:47,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:57:47,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:57:47,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:57:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-12 00:57:47,997 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-12 00:57:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:57:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:57:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:57:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:57:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:57:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:57:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:57:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:57:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:57:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:57:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:57:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:57:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:57:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:57:48,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:57:48,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:57:48,333 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:57:48,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:57:48,339 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:57:59,048 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:57:59,067 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:57:59,067 INFO L302 CfgBuilder]: Removed 151 assume(true) statements. [2023-11-12 00:57:59,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:59 BoogieIcfgContainer [2023-11-12 00:57:59,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:57:59,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:57:59,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:57:59,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:57:59,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:57:46" (1/3) ... [2023-11-12 00:57:59,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7385728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:59, skipping insertion in model container [2023-11-12 00:57:59,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:57:47" (2/3) ... [2023-11-12 00:57:59,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7385728e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:57:59, skipping insertion in model container [2023-11-12 00:57:59,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:57:59" (3/3) ... [2023-11-12 00:57:59,083 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test10-1.i [2023-11-12 00:57:59,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:57:59,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 990 error locations. [2023-11-12 00:57:59,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:57:59,206 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;@1eb6e900, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:57:59,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 990 error locations. [2023-11-12 00:57:59,216 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 00:57:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:57:59,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:57:59,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:57:59,223 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 00:57:59,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:57:59,230 INFO L85 PathProgramCache]: Analyzing trace with hash 66598, now seen corresponding path program 1 times [2023-11-12 00:57:59,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:57:59,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326868883] [2023-11-12 00:57:59,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:57:59,245 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 00:57:59,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:57:59,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:57:59,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:57:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:57:59,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:57:59,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:57:59,575 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 00:57:59,588 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 00:57:59,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:57:59,589 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:57:59,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326868883] [2023-11-12 00:57:59,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326868883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:57:59,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:57:59,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:57:59,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109968312] [2023-11-12 00:57:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:57:59,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:57:59,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:57:59,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:57:59,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:57:59,646 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 00:58:04,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:04,442 INFO L93 Difference]: Finished difference Result 2583 states and 2746 transitions. [2023-11-12 00:58:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:04,445 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 00:58:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:04,476 INFO L225 Difference]: With dead ends: 2583 [2023-11-12 00:58:04,476 INFO L226 Difference]: Without dead ends: 2581 [2023-11-12 00:58:04,478 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 00:58:04,482 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 1967 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:04,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 1666 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-12 00:58:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2023-11-12 00:58:04,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2228. [2023-11-12 00:58:04,650 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 00:58:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2550 transitions. [2023-11-12 00:58:04,665 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2550 transitions. Word has length 3 [2023-11-12 00:58:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:04,666 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 2550 transitions. [2023-11-12 00:58:04,666 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 00:58:04,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2550 transitions. [2023-11-12 00:58:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:58:04,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:04,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:58:04,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:04,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:04,872 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 00:58:04,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash 66599, now seen corresponding path program 1 times [2023-11-12 00:58:04,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:04,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010260076] [2023-11-12 00:58:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:04,874 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 00:58:04,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:04,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:04,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:05,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:58:05,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:05,086 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 00:58:05,099 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 00:58:05,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:05,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:58:05,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010260076] [2023-11-12 00:58:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010260076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:05,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:58:05,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627723895] [2023-11-12 00:58:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:05,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:58:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:05,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:05,105 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 00:58:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:12,243 INFO L93 Difference]: Finished difference Result 3011 states and 3414 transitions. [2023-11-12 00:58:12,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:58:12,244 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 00:58:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:12,261 INFO L225 Difference]: With dead ends: 3011 [2023-11-12 00:58:12,262 INFO L226 Difference]: Without dead ends: 3011 [2023-11-12 00:58:12,262 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 00:58:12,264 INFO L413 NwaCegarLoop]: 1850 mSDtfsCounter, 856 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s 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, 7.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:12,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3047 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-12 00:58:12,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2023-11-12 00:58:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2689. [2023-11-12 00:58:12,329 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 00:58:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 3411 transitions. [2023-11-12 00:58:12,344 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 3411 transitions. Word has length 3 [2023-11-12 00:58:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:12,344 INFO L495 AbstractCegarLoop]: Abstraction has 2689 states and 3411 transitions. [2023-11-12 00:58:12,345 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 00:58:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 3411 transitions. [2023-11-12 00:58:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:58:12,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:12,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:12,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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)] Ended with exit code 0 [2023-11-12 00:58:12,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:12,558 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 00:58:12,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1375609072, now seen corresponding path program 1 times [2023-11-12 00:58:12,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:12,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957053594] [2023-11-12 00:58:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:12,564 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 00:58:12,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:12,566 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:12,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:12,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:58:12,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:12,874 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 00:58:12,882 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 00:58:12,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:58:12,988 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 00:58:13,014 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:58:13,015 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 00:58:13,045 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 00:58:13,046 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:13,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:58:13,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957053594] [2023-11-12 00:58:13,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957053594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:13,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:13,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:58:13,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168522274] [2023-11-12 00:58:13,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:58:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:58:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:58:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:58:13,049 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 00:58:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:58:24,873 INFO L93 Difference]: Finished difference Result 4969 states and 5841 transitions. [2023-11-12 00:58:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:58:24,874 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 00:58:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:58:24,900 INFO L225 Difference]: With dead ends: 4969 [2023-11-12 00:58:24,901 INFO L226 Difference]: Without dead ends: 4969 [2023-11-12 00:58:24,901 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 00:58:24,902 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 4346 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s 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, 11.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:58:24,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4356 Valid, 2098 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-11-12 00:58:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2023-11-12 00:58:24,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 3421. [2023-11-12 00:58:24,988 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 00:58:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4961 transitions. [2023-11-12 00:58:25,003 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4961 transitions. Word has length 7 [2023-11-12 00:58:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:58:25,003 INFO L495 AbstractCegarLoop]: Abstraction has 3421 states and 4961 transitions. [2023-11-12 00:58:25,004 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 00:58:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4961 transitions. [2023-11-12 00:58:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:58:25,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:58:25,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:58:25,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:25,222 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 00:58:25,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:58:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash -305791726, now seen corresponding path program 1 times [2023-11-12 00:58:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:58:25,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510087991] [2023-11-12 00:58:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:58:25,224 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 00:58:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:58:25,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:25,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63090893-77d9-4eba-9009-1e0454be4f29/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 00:58:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:58:25,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:58:25,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:58:25,427 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 00:58:25,442 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 00:58:25,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:58:25,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:58:25,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510087991] [2023-11-12 00:58:25,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510087991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:58:25,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:58:25,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:58:25,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565064253] [2023-11-12 00:58:25,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:58:25,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:58:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:58:25,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:58:25,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:58:25,446 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)