./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2 --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 16c93f411f7e7984964960171e6986ff89eb89f75783c8b2783bb47b46e751d9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:07,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:07,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:33:07,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:07,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:07,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:07,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:07,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:07,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:07,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:07,485 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:07,485 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:07,486 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:07,486 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:33:07,487 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:07,487 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:07,488 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:33:07,489 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:33:07,492 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:07,493 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:33:07,493 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:33:07,494 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:33:07,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:33:07,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:33:07,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:07,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:33:07,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:33:07,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:33:07,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:07,496 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:33:07,497 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:33:07,497 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:33:07,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:07,500 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:33:07,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:07,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:33:07,501 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:33:07,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:07,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:07,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:07,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:07,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:07,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:07,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:07,504 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:33:07,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:33:07,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:07,505 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:07,505 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:07,505 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_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16c93f411f7e7984964960171e6986ff89eb89f75783c8b2783bb47b46e751d9 [2024-11-02 12:33:07,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:33:07,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:33:07,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:33:07,783 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:33:07,783 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:33:07,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i Unable to find full path for "g++" [2024-11-02 12:33:10,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:10,440 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:10,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i [2024-11-02 12:33:10,458 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data/344c6ca8c/7eb1ff43cb45401c8424e88c8cbbb1bd/FLAG13a0d4dfc [2024-11-02 12:33:10,479 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data/344c6ca8c/7eb1ff43cb45401c8424e88c8cbbb1bd [2024-11-02 12:33:10,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:10,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:10,487 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:10,487 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:10,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:10,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:10" (1/1) ... [2024-11-02 12:33:10,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff47ac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:10, skipping insertion in model container [2024-11-02 12:33:10,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:10" (1/1) ... [2024-11-02 12:33:10,547 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:10,965 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:11,042 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:11,048 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:11,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:11,086 ERROR L321 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) [2024-11-02 12:33:11,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a944cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:11, skipping insertion in model container [2024-11-02 12:33:11,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:11,087 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-02 12:33:11,089 INFO L158 Benchmark]: Toolchain (without parser) took 603.55ms. Allocated memory is still 121.6MB. Free memory was 87.3MB in the beginning and 70.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-02 12:33:11,090 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory was 88.0MB in the beginning and 87.9MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:33:11,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 600.34ms. Allocated memory is still 121.6MB. Free memory was 87.3MB in the beginning and 70.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-02 12:33:11,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory was 88.0MB in the beginning and 87.9MB in the end (delta: 29.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 600.34ms. Allocated memory is still 121.6MB. Free memory was 87.3MB in the beginning and 70.9MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2 --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 16c93f411f7e7984964960171e6986ff89eb89f75783c8b2783bb47b46e751d9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:33:13,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:33:13,563 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-02 12:33:13,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:33:13,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:33:13,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:33:13,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:33:13,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:33:13,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:33:13,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:33:13,627 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:33:13,628 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:33:13,628 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:33:13,629 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:33:13,631 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:33:13,632 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:33:13,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:33:13,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:33:13,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:33:13,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:33:13,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:33:13,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:33:13,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:33:13,640 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:33:13,640 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:33:13,640 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:33:13,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:33:13,641 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:33:13,641 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:33:13,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:33:13,642 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:33:13,642 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:33:13,642 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:33:13,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:33:13,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:33:13,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:33:13,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:33:13,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:33:13,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:13,648 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:33:13,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:33:13,649 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:33:13,650 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:33:13,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:33:13,650 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:33:13,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:33:13,651 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_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16c93f411f7e7984964960171e6986ff89eb89f75783c8b2783bb47b46e751d9 [2024-11-02 12:33:14,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:33:14,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:33:14,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:33:14,141 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:33:14,143 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:33:14,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i Unable to find full path for "g++" [2024-11-02 12:33:16,292 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:33:16,599 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:33:16,600 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/sv-benchmarks/c/ldv-memsafety/memleaks_test19-1.i [2024-11-02 12:33:16,628 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data/98c244461/b47f3e054646424d9b129f40d818d105/FLAG3fa81168b [2024-11-02 12:33:16,865 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/data/98c244461/b47f3e054646424d9b129f40d818d105 [2024-11-02 12:33:16,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:33:16,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:33:16,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:16,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:33:16,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:33:16,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:16" (1/1) ... [2024-11-02 12:33:16,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5feb8ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:16, skipping insertion in model container [2024-11-02 12:33:16,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:33:16" (1/1) ... [2024-11-02 12:33:16,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:17,474 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:17,549 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:17,556 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:17,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:17,605 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-02 12:33:17,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:33:17,664 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:17,699 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:17,703 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:33:17,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:17,721 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:33:17,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:33:17,830 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:33:17,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17 WrapperNode [2024-11-02 12:33:17,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:33:17,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:17,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:33:17,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:33:17,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,862 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,887 INFO L138 Inliner]: procedures = 171, calls = 87, calls flagged for inlining = 25, calls inlined = 7, statements flattened = 77 [2024-11-02 12:33:17,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:33:17,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:33:17,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:33:17,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:33:17,901 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:33:17,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:33:17,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:33:17,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:33:17,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (1/1) ... [2024-11-02 12:33:17,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:33:17,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:17,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:33:17,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure f19_undo [2024-11-02 12:33:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure f19_undo [2024-11-02 12:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-02 12:33:18,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-02 12:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:33:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:33:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:33:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:33:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:33:18,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:33:18,156 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:33:18,159 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:33:18,510 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-02 12:33:18,510 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:33:18,529 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:33:18,530 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-02 12:33:18,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:18 BoogieIcfgContainer [2024-11-02 12:33:18,531 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:33:18,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:33:18,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:33:18,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:33:18,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:33:16" (1/3) ... [2024-11-02 12:33:18,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297eddab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:18, skipping insertion in model container [2024-11-02 12:33:18,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:33:17" (2/3) ... [2024-11-02 12:33:18,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297eddab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:33:18, skipping insertion in model container [2024-11-02 12:33:18,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:33:18" (3/3) ... [2024-11-02 12:33:18,543 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test19-1.i [2024-11-02 12:33:18,557 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:33:18,557 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-02 12:33:18,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:33:18,611 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@256a12ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:33:18,614 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-02 12:33:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 64 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:33:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:33:18,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:18,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:18,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:18,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:18,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1461209413, now seen corresponding path program 1 times [2024-11-02 12:33:18,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:18,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776909176] [2024-11-02 12:33:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:18,684 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 [2024-11-02 12:33:18,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:18,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:18,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:18,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:33:18,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:18,950 INFO L378 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 [2024-11-02 12:33:19,014 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2024-11-02 12:33:19,067 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-02 12:33:19,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-02 12:33:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:19,096 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:19,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:19,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776909176] [2024-11-02 12:33:19,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776909176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:19,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:19,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:33:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029448107] [2024-11-02 12:33:19,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:19,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:33:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:19,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:33:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-02 12:33:19,147 INFO L87 Difference]: Start difference. First operand has 70 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 64 states have internal predecessors, (69), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:19,402 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2024-11-02 12:33:19,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:33:19,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-11-02 12:33:19,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:19,417 INFO L225 Difference]: With dead ends: 86 [2024-11-02 12:33:19,417 INFO L226 Difference]: Without dead ends: 84 [2024-11-02 12:33:19,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-02 12:33:19,422 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 32 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:19,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 162 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 104 Unchecked, 0.2s Time] [2024-11-02 12:33:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-02 12:33:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2024-11-02 12:33:19,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 46 states have (on average 1.7391304347826086) internal successors, (80), 68 states have internal predecessors, (80), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-02 12:33:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2024-11-02 12:33:19,496 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 8 [2024-11-02 12:33:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:19,497 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2024-11-02 12:33:19,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2024-11-02 12:33:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 12:33:19,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:19,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:19,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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)] Ended with exit code 0 [2024-11-02 12:33:19,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:19,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:19,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1461209414, now seen corresponding path program 1 times [2024-11-02 12:33:19,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:19,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905573342] [2024-11-02 12:33:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:19,703 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 [2024-11-02 12:33:19,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:19,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:19,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:19,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 12:33:19,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:19,851 INFO L378 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 [2024-11-02 12:33:19,860 INFO L378 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 [2024-11-02 12:33:19,983 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-02 12:33:20,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:33:20,056 INFO L378 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 [2024-11-02 12:33:20,075 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-02 12:33:20,076 INFO L378 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 [2024-11-02 12:33:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:20,108 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:20,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:20,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905573342] [2024-11-02 12:33:20,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905573342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:20,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:20,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:33:20,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85631596] [2024-11-02 12:33:20,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:20,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:33:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:33:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-02 12:33:20,114 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:20,480 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2024-11-02 12:33:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:33:20,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2024-11-02 12:33:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:20,483 INFO L225 Difference]: With dead ends: 84 [2024-11-02 12:33:20,483 INFO L226 Difference]: Without dead ends: 84 [2024-11-02 12:33:20,484 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-02 12:33:20,485 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 31 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:20,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 169 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 127 Invalid, 0 Unknown, 105 Unchecked, 0.3s Time] [2024-11-02 12:33:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-02 12:33:20,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2024-11-02 12:33:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 69 states have internal predecessors, (82), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-02 12:33:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2024-11-02 12:33:20,505 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 8 [2024-11-02 12:33:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:20,505 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2024-11-02 12:33:20,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:20,506 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2024-11-02 12:33:20,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:33:20,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:20,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:20,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:20,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:20,711 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:20,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1807662222, now seen corresponding path program 1 times [2024-11-02 12:33:20,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:20,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459391491] [2024-11-02 12:33:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:20,713 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 [2024-11-02 12:33:20,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:20,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:20,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:20,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:33:20,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:20,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-02 12:33:20,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-02 12:33:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:20,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:20,930 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:20,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459391491] [2024-11-02 12:33:20,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459391491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:20,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:20,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:33:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728807251] [2024-11-02 12:33:20,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:20,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:33:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:20,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:33:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:33:20,934 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:21,077 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2024-11-02 12:33:21,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:33:21,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-02 12:33:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:21,080 INFO L225 Difference]: With dead ends: 86 [2024-11-02 12:33:21,080 INFO L226 Difference]: Without dead ends: 86 [2024-11-02 12:33:21,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:33:21,082 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 4 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:21,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 317 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:33:21,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-02 12:33:21,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2024-11-02 12:33:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.6226415094339623) internal successors, (86), 72 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-02 12:33:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 98 transitions. [2024-11-02 12:33:21,096 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 98 transitions. Word has length 15 [2024-11-02 12:33:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:21,096 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 98 transitions. [2024-11-02 12:33:21,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 98 transitions. [2024-11-02 12:33:21,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 12:33:21,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:21,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:21,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:21,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:21,303 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:21,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:21,304 INFO L85 PathProgramCache]: Analyzing trace with hash 690353715, now seen corresponding path program 1 times [2024-11-02 12:33:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363839222] [2024-11-02 12:33:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:21,305 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 [2024-11-02 12:33:21,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:21,316 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:21,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:21,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:33:21,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:21,539 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:21,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363839222] [2024-11-02 12:33:21,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363839222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:21,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:21,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:33:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290525878] [2024-11-02 12:33:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:21,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:33:21,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:21,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:33:21,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:33:21,543 INFO L87 Difference]: Start difference. First operand 81 states and 98 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:21,590 INFO L93 Difference]: Finished difference Result 84 states and 101 transitions. [2024-11-02 12:33:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:33:21,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-02 12:33:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:21,592 INFO L225 Difference]: With dead ends: 84 [2024-11-02 12:33:21,593 INFO L226 Difference]: Without dead ends: 84 [2024-11-02 12:33:21,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:33:21,594 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 10 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:21,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 246 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:21,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-02 12:33:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-02 12:33:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 75 states have internal predecessors, (89), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-02 12:33:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2024-11-02 12:33:21,603 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 15 [2024-11-02 12:33:21,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:21,604 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2024-11-02 12:33:21,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2024-11-02 12:33:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:33:21,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:21,605 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:21,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-02 12:33:21,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:21,807 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:21,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash 891124571, now seen corresponding path program 1 times [2024-11-02 12:33:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336720134] [2024-11-02 12:33:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:21,811 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 [2024-11-02 12:33:21,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:21,818 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:21,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-02 12:33:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:21,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:33:21,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:21,968 INFO L378 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 8 treesize of output 1 [2024-11-02 12:33:22,102 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)))) is different from true [2024-11-02 12:33:22,139 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-02 12:33:22,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-02 12:33:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:22,179 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:22,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:22,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336720134] [2024-11-02 12:33:22,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336720134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:22,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:22,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:33:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407667017] [2024-11-02 12:33:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:33:22,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:22,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:33:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2024-11-02 12:33:22,185 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:33:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:22,488 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2024-11-02 12:33:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:33:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-02 12:33:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:22,492 INFO L225 Difference]: With dead ends: 85 [2024-11-02 12:33:22,492 INFO L226 Difference]: Without dead ends: 85 [2024-11-02 12:33:22,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-11-02 12:33:22,493 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 30 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:22,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 192 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 99 Unchecked, 0.3s Time] [2024-11-02 12:33:22,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-02 12:33:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2024-11-02 12:33:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 73 states have internal predecessors, (85), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-02 12:33:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2024-11-02 12:33:22,509 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 17 [2024-11-02 12:33:22,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:22,510 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2024-11-02 12:33:22,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:33:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2024-11-02 12:33:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:33:22,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:22,511 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:22,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-02 12:33:22,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:22,712 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:22,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash 891124572, now seen corresponding path program 1 times [2024-11-02 12:33:22,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:22,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567016577] [2024-11-02 12:33:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:22,715 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 [2024-11-02 12:33:22,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:22,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:22,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-02 12:33:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:22,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-02 12:33:22,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:22,840 INFO L378 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 8 treesize of output 1 [2024-11-02 12:33:22,969 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-02 12:33:23,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-02 12:33:23,005 INFO L378 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 [2024-11-02 12:33:23,019 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-02 12:33:23,019 INFO L378 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 [2024-11-02 12:33:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:23,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:23,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567016577] [2024-11-02 12:33:23,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567016577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:23,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:23,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:33:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252119646] [2024-11-02 12:33:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:23,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:33:23,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:33:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2024-11-02 12:33:23,045 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:33:23,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:23,392 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2024-11-02 12:33:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:33:23,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2024-11-02 12:33:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:23,393 INFO L225 Difference]: With dead ends: 82 [2024-11-02 12:33:23,394 INFO L226 Difference]: Without dead ends: 82 [2024-11-02 12:33:23,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2024-11-02 12:33:23,395 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:23,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 227 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 102 Unchecked, 0.3s Time] [2024-11-02 12:33:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-02 12:33:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2024-11-02 12:33:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 71 states have internal predecessors, (81), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-02 12:33:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2024-11-02 12:33:23,402 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 17 [2024-11-02 12:33:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:23,403 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2024-11-02 12:33:23,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:33:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2024-11-02 12:33:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:33:23,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:23,404 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:23,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-02 12:33:23,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:23,605 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:23,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:23,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2005389781, now seen corresponding path program 1 times [2024-11-02 12:33:23,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:23,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672151586] [2024-11-02 12:33:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:23,607 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 [2024-11-02 12:33:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:23,610 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:23,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-02 12:33:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:23,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 12:33:23,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:23,818 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~#a19~0#1.base_7| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#a19~0#1.base_7| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~#a19~0#1.base_7|)))) is different from true [2024-11-02 12:33:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:23,829 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:23,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672151586] [2024-11-02 12:33:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672151586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:23,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:33:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140576147] [2024-11-02 12:33:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:23,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:33:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:33:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-02 12:33:23,832 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:24,050 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2024-11-02 12:33:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:33:24,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-02 12:33:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:24,052 INFO L225 Difference]: With dead ends: 111 [2024-11-02 12:33:24,052 INFO L226 Difference]: Without dead ends: 105 [2024-11-02 12:33:24,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-02 12:33:24,054 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 36 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:24,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 185 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 112 Unchecked, 0.2s Time] [2024-11-02 12:33:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-02 12:33:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2024-11-02 12:33:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 78 states have internal predecessors, (90), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-02 12:33:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 105 transitions. [2024-11-02 12:33:24,062 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 105 transitions. Word has length 17 [2024-11-02 12:33:24,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:24,062 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 105 transitions. [2024-11-02 12:33:24,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:33:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 105 transitions. [2024-11-02 12:33:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:33:24,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:24,064 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:24,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-02 12:33:24,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:24,267 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:24,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1867537779, now seen corresponding path program 1 times [2024-11-02 12:33:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242278008] [2024-11-02 12:33:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:24,268 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 [2024-11-02 12:33:24,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:24,271 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:24,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-02 12:33:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:24,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 12:33:24,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:33:24,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:24,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:24,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242278008] [2024-11-02 12:33:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242278008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:24,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:24,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:33:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488773091] [2024-11-02 12:33:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:33:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:33:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:33:24,390 INFO L87 Difference]: Start difference. First operand 88 states and 105 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:33:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:24,411 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2024-11-02 12:33:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:33:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-02 12:33:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:24,413 INFO L225 Difference]: With dead ends: 94 [2024-11-02 12:33:24,413 INFO L226 Difference]: Without dead ends: 94 [2024-11-02 12:33:24,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:33:24,414 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:24,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:33:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-02 12:33:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-02 12:33:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.391304347826087) internal successors, (96), 84 states have internal predecessors, (96), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-02 12:33:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-11-02 12:33:24,421 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 23 [2024-11-02 12:33:24,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:24,421 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-11-02 12:33:24,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:33:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-11-02 12:33:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:33:24,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:24,423 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:24,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-02 12:33:24,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:24,623 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:24,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1867478197, now seen corresponding path program 1 times [2024-11-02 12:33:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231243930] [2024-11-02 12:33:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:24,625 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 [2024-11-02 12:33:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:24,628 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:24,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 (10)] Waiting until timeout for monitored process [2024-11-02 12:33:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:24,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 12:33:24,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:24,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 12:33:24,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-02 12:33:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:33:24,794 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:33:24,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:24,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231243930] [2024-11-02 12:33:24,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231243930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:33:24,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:33:24,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:33:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106697553] [2024-11-02 12:33:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:33:24,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:33:24,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:33:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:33:24,797 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:33:24,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:24,878 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-02 12:33:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:33:24,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2024-11-02 12:33:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:24,880 INFO L225 Difference]: With dead ends: 92 [2024-11-02 12:33:24,881 INFO L226 Difference]: Without dead ends: 92 [2024-11-02 12:33:24,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:33:24,882 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:24,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:33:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-02 12:33:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-02 12:33:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 67 states have (on average 1.373134328358209) internal successors, (92), 81 states have internal predecessors, (92), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-02 12:33:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2024-11-02 12:33:24,888 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 23 [2024-11-02 12:33:24,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:24,889 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2024-11-02 12:33:24,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-02 12:33:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2024-11-02 12:33:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:33:24,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:24,891 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:24,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 (10)] Ended with exit code 0 [2024-11-02 12:33:25,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:33:25,091 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:25,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash 440766702, now seen corresponding path program 1 times [2024-11-02 12:33:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:25,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041554267] [2024-11-02 12:33:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:25,092 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 [2024-11-02 12:33:25,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:25,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:25,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-02 12:33:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:25,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 12:33:25,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:25,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-02 12:33:25,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-02 12:33:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:25,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:27,703 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:27,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041554267] [2024-11-02 12:33:27,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041554267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:27,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [854394268] [2024-11-02 12:33:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:27,703 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-02 12:33:27,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 [2024-11-02 12:33:27,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-02 12:33:27,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-02 12:33:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:27,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-02 12:33:27,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:27,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-02 12:33:28,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-02 12:33:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:28,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:30,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [854394268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:30,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074772783] [2024-11-02 12:33:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:30,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:30,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:30,216 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:30,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-02 12:33:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:30,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-02 12:33:30,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:30,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-02 12:33:30,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-02 12:33:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:30,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:32,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074772783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:32,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:32,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 12 [2024-11-02 12:33:32,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900331705] [2024-11-02 12:33:32,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:32,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:33:32,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:32,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:33:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2024-11-02 12:33:32,679 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:33:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:33:32,999 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2024-11-02 12:33:33,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 12:33:33,000 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 24 [2024-11-02 12:33:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:33:33,001 INFO L225 Difference]: With dead ends: 92 [2024-11-02 12:33:33,001 INFO L226 Difference]: Without dead ends: 92 [2024-11-02 12:33:33,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=70, Invalid=235, Unknown=1, NotChecked=0, Total=306 [2024-11-02 12:33:33,003 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 97 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:33:33,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 293 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:33:33,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-02 12:33:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2024-11-02 12:33:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 80 states have internal predecessors, (91), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-02 12:33:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2024-11-02 12:33:33,013 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 24 [2024-11-02 12:33:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:33:33,014 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2024-11-02 12:33:33,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:33:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2024-11-02 12:33:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:33:33,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:33:33,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:33:33,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:33,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:33,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-02 12:33:33,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:33,617 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-02 12:33:33,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:33:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash 778865962, now seen corresponding path program 1 times [2024-11-02 12:33:33,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:33:33,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407311248] [2024-11-02 12:33:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:33,618 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 [2024-11-02 12:33:33,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:33:33,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:33:33,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-02 12:33:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:33,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-02 12:33:33,750 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:33,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 12:33:34,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 15 [2024-11-02 12:33:34,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-02 12:33:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:34,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:34,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:33:34,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407311248] [2024-11-02 12:33:34,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407311248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:34,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1043936252] [2024-11-02 12:33:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:34,604 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-02 12:33:34,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 [2024-11-02 12:33:34,607 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-02 12:33:34,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-02 12:33:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:34,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-02 12:33:34,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:35,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-02 12:33:37,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-02 12:33:37,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-02 12:33:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:37,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:37,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1043936252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:37,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914549651] [2024-11-02 12:33:37,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:33:37,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:33:37,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:33:37,670 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:33:37,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ce2be30-60d4-4edf-8d75-fb7ce2eaf255/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-02 12:33:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:33:37,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-02 12:33:37,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:33:37,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-02 12:33:38,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-02 12:33:38,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-02 12:33:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:33:38,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:33:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914549651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:33:38,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:33:38,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-02 12:33:38,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247085508] [2024-11-02 12:33:38,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:33:38,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-02 12:33:38,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:33:38,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-02 12:33:38,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=352, Unknown=1, NotChecked=0, Total=462 [2024-11-02 12:33:38,671 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 21 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-02 12:33:40,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-02 12:33:42,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]