./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje --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 35bea36500fd584379ee75f7219d833c6e835c74616f49a2cc8d9d16168e8f4f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:18:20,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:18:21,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 06:18:21,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:18:21,062 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:18:21,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:18:21,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:18:21,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:18:21,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:18:21,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:18:21,099 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:18:21,099 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:18:21,100 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:18:21,100 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:18:21,101 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:18:21,101 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:18:21,102 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:18:21,109 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:18:21,109 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:18:21,110 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:18:21,110 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:18:21,115 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:18:21,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:18:21,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:18:21,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:18:21,117 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:18:21,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:18:21,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:18:21,118 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:18:21,118 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:18:21,121 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:18:21,122 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:18:21,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:18:21,122 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:18:21,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:18:21,124 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:18:21,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:18:21,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:18:21,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:18:21,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:18:21,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:18:21,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:18:21,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:18:21,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:18:21,128 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:18:21,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:18:21,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:18:21,129 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:18:21,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:18:21,130 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_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35bea36500fd584379ee75f7219d833c6e835c74616f49a2cc8d9d16168e8f4f [2024-11-09 06:18:21,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:18:21,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:18:21,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:18:21,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:18:21,527 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:18:21,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i Unable to find full path for "g++" [2024-11-09 06:18:24,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:18:24,570 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:18:24,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i [2024-11-09 06:18:24,592 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data/ced9f6911/9cbbc0213d644a949aa2c2bc245850f2/FLAG6eb9e5d01 [2024-11-09 06:18:24,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data/ced9f6911/9cbbc0213d644a949aa2c2bc245850f2 [2024-11-09 06:18:24,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:18:24,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:18:24,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:18:24,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:18:24,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:18:24,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:18:24" (1/1) ... [2024-11-09 06:18:24,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca99db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:24, skipping insertion in model container [2024-11-09 06:18:24,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:18:24" (1/1) ... [2024-11-09 06:18:24,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:18:25,300 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:18:25,416 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:18:25,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:18:25,477 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) [2024-11-09 06:18:25,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ce54ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:25, skipping insertion in model container [2024-11-09 06:18:25,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:18:25,480 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 06:18:25,484 INFO L158 Benchmark]: Toolchain (without parser) took 859.01ms. Allocated memory is still 163.6MB. Free memory was 130.7MB in the beginning and 114.1MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 06:18:25,485 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory was 63.9MB in the beginning and 63.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:18:25,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 854.27ms. Allocated memory is still 163.6MB. Free memory was 130.7MB in the beginning and 114.1MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 06:18:25,490 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 109.1MB. Free memory was 63.9MB in the beginning and 63.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 854.27ms. Allocated memory is still 163.6MB. Free memory was 130.7MB in the beginning and 114.1MB in the end (delta: 16.6MB). 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_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje --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 35bea36500fd584379ee75f7219d833c6e835c74616f49a2cc8d9d16168e8f4f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:18:28,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:18:28,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 06:18:28,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:18:28,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:18:28,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:18:28,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:18:28,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:18:28,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:18:28,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:18:28,770 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:18:28,771 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:18:28,771 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:18:28,772 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:18:28,772 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:18:28,773 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:18:28,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:18:28,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:18:28,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:18:28,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:18:28,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:18:28,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:18:28,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:18:28,781 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 06:18:28,782 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 06:18:28,782 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 06:18:28,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:18:28,783 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 06:18:28,783 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 06:18:28,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:18:28,784 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 06:18:28,784 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:18:28,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:18:28,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:18:28,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:18:28,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:18:28,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:18:28,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:18:28,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:18:28,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:18:28,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:18:28,790 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 06:18:28,790 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 06:18:28,790 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:18:28,791 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:18:28,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35bea36500fd584379ee75f7219d833c6e835c74616f49a2cc8d9d16168e8f4f [2024-11-09 06:18:29,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:18:29,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:18:29,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:18:29,384 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:18:29,385 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:18:29,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i Unable to find full path for "g++" [2024-11-09 06:18:32,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:18:32,768 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:18:32,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/sv-benchmarks/c/ldv-memsafety/memleaks_test13_2.i [2024-11-09 06:18:32,799 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data/d2e2f53b5/04f3416f714f4225bd1d4f07cbf86579/FLAG6b33e952c [2024-11-09 06:18:32,824 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/data/d2e2f53b5/04f3416f714f4225bd1d4f07cbf86579 [2024-11-09 06:18:32,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:18:32,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:18:32,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:18:32,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:18:32,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:18:32,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:18:32" (1/1) ... [2024-11-09 06:18:32,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1198ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:32, skipping insertion in model container [2024-11-09 06:18:32,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:18:32" (1/1) ... [2024-11-09 06:18:32,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:18:33,502 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:18:33,612 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:18:33,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:18:33,673 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 06:18:33,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:18:33,756 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:18:33,804 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 06:18:33,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:18:33,832 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:18:33,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:18:33,969 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:18:33,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33 WrapperNode [2024-11-09 06:18:33,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:18:33,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:18:33,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:18:33,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:18:33,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,033 INFO L138 Inliner]: procedures = 167, calls = 79, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 60 [2024-11-09 06:18:34,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:18:34,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:18:34,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:18:34,035 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:18:34,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,070 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:18:34,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:18:34,080 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:18:34,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:18:34,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (1/1) ... [2024-11-09 06:18:34,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:18:34,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:18:34,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:18:34,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:18:34,231 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2024-11-09 06:18:34,231 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2024-11-09 06:18:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-09 06:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-09 06:18:34,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 06:18:34,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 06:18:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2024-11-09 06:18:34,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2024-11-09 06:18:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:18:34,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:18:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:18:34,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:18:34,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:18:34,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-11-09 06:18:34,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-11-09 06:18:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:18:34,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:18:34,428 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:18:34,430 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:18:35,068 INFO L? ?]: Removed 74 outVars from TransFormulas that were not future-live. [2024-11-09 06:18:35,069 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:18:35,087 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:18:35,087 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:18:35,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:18:35 BoogieIcfgContainer [2024-11-09 06:18:35,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:18:35,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:18:35,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:18:35,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:18:35,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:18:32" (1/3) ... [2024-11-09 06:18:35,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427f2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:18:35, skipping insertion in model container [2024-11-09 06:18:35,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:18:33" (2/3) ... [2024-11-09 06:18:35,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427f2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:18:35, skipping insertion in model container [2024-11-09 06:18:35,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:18:35" (3/3) ... [2024-11-09 06:18:35,102 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test13_2.i [2024-11-09 06:18:35,126 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:18:35,127 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-11-09 06:18:35,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:18:35,245 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;@1a7a9714, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:18:35,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-09 06:18:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 73 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 06:18:35,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:35,266 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:35,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:35,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1285123929, now seen corresponding path program 1 times [2024-11-09 06:18:35,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:35,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989616905] [2024-11-09 06:18:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:35,299 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 [2024-11-09 06:18:35,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:35,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:35,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:35,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:18:35,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:35,864 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-09 06:18:35,865 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 [2024-11-09 06:18:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:36,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:36,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989616905] [2024-11-09 06:18:36,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989616905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:36,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:36,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:18:36,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809798362] [2024-11-09 06:18:36,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:36,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:18:36,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:18:36,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2024-11-09 06:18:36,117 INFO L87 Difference]: Start difference. First operand has 83 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 73 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:37,156 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2024-11-09 06:18:37,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:18:37,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 06:18:37,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:37,173 INFO L225 Difference]: With dead ends: 83 [2024-11-09 06:18:37,174 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 06:18:37,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=70, Unknown=1, NotChecked=0, Total=110 [2024-11-09 06:18:37,181 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 171 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 17 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:37,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 70 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 210 Invalid, 32 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:18:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 06:18:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-11-09 06:18:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.7142857142857142) internal successors, (72), 69 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-11-09 06:18:37,244 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 12 [2024-11-09 06:18:37,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:37,245 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-11-09 06:18:37,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-11-09 06:18:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 06:18:37,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:37,250 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:37,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:37,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:37,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:37,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1285123928, now seen corresponding path program 1 times [2024-11-09 06:18:37,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:37,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547893117] [2024-11-09 06:18:37,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:37,455 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 [2024-11-09 06:18:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:37,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:37,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:37,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:18:37,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:37,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:18:37,955 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 [2024-11-09 06:18:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:38,156 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:38,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547893117] [2024-11-09 06:18:38,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547893117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:38,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:38,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:18:38,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678742272] [2024-11-09 06:18:38,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:38,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:18:38,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:18:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:38,162 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:39,315 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2024-11-09 06:18:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:18:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-09 06:18:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:39,318 INFO L225 Difference]: With dead ends: 79 [2024-11-09 06:18:39,319 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 06:18:39,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:18:39,321 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 189 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:39,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 71 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:18:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 06:18:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-09 06:18:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2024-11-09 06:18:39,336 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 12 [2024-11-09 06:18:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:39,337 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2024-11-09 06:18:39,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2024-11-09 06:18:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:18:39,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:39,338 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:39,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:39,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:39,539 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:39,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash 211575775, now seen corresponding path program 1 times [2024-11-09 06:18:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:39,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555873575] [2024-11-09 06:18:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:39,542 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 [2024-11-09 06:18:39,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:39,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:39,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:39,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:18:39,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:39,770 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 [2024-11-09 06:18:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:39,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:39,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:39,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555873575] [2024-11-09 06:18:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555873575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:39,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:39,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:18:39,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117426935] [2024-11-09 06:18:39,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:39,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:18:39,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:39,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:18:39,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:39,839 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:40,648 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2024-11-09 06:18:40,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:18:40,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-09 06:18:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:40,652 INFO L225 Difference]: With dead ends: 111 [2024-11-09 06:18:40,653 INFO L226 Difference]: Without dead ends: 111 [2024-11-09 06:18:40,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:18:40,667 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 59 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:40,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 293 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:40,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-09 06:18:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 76. [2024-11-09 06:18:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-09 06:18:40,692 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 15 [2024-11-09 06:18:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:40,693 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-09 06:18:40,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-09 06:18:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 06:18:40,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:40,696 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:40,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:18:40,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:40,897 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:40,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash 211575776, now seen corresponding path program 1 times [2024-11-09 06:18:40,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:40,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285677892] [2024-11-09 06:18:40,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:40,900 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 [2024-11-09 06:18:40,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:40,905 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:40,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:41,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 06:18:41,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:41,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:18:41,457 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 [2024-11-09 06:18:41,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:41,953 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:41,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:41,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285677892] [2024-11-09 06:18:41,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285677892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:41,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:41,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:18:41,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106046748] [2024-11-09 06:18:41,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:41,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:18:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:18:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:18:41,959 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:44,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:44,232 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2024-11-09 06:18:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:18:44,235 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-09 06:18:44,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:44,236 INFO L225 Difference]: With dead ends: 107 [2024-11-09 06:18:44,236 INFO L226 Difference]: Without dead ends: 107 [2024-11-09 06:18:44,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:18:44,238 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 87 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:44,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 223 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 06:18:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-09 06:18:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2024-11-09 06:18:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.619047619047619) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2024-11-09 06:18:44,250 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 15 [2024-11-09 06:18:44,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:44,250 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2024-11-09 06:18:44,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:44,251 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2024-11-09 06:18:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:18:44,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:44,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:44,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:44,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:44,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:44,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:44,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1183663415, now seen corresponding path program 1 times [2024-11-09 06:18:44,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:44,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768107816] [2024-11-09 06:18:44,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:44,458 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 [2024-11-09 06:18:44,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:44,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:44,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:44,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:18:44,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:44,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:44,612 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:44,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768107816] [2024-11-09 06:18:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768107816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:44,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:44,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:18:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537899988] [2024-11-09 06:18:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:44,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:18:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:18:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:18:44,621 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-09 06:18:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:44,665 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2024-11-09 06:18:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:18:44,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2024-11-09 06:18:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:44,668 INFO L225 Difference]: With dead ends: 81 [2024-11-09 06:18:44,668 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 06:18:44,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:18:44,670 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 1 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:44,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 299 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:18:44,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 06:18:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-11-09 06:18:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 68 states have internal predecessors, (71), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:18:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-11-09 06:18:44,688 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 13 [2024-11-09 06:18:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:44,689 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-11-09 06:18:44,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-09 06:18:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-11-09 06:18:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:18:44,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:44,690 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:44,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:44,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:44,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:44,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1303849418, now seen corresponding path program 1 times [2024-11-09 06:18:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:44,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834832128] [2024-11-09 06:18:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:44,894 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 [2024-11-09 06:18:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:44,896 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:44,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:44,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 06:18:44,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:45,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:45,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:45,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834832128] [2024-11-09 06:18:45,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834832128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:45,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:45,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:18:45,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433834560] [2024-11-09 06:18:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:45,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:18:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:18:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:45,440 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-09 06:18:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:46,205 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2024-11-09 06:18:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:18:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 13 [2024-11-09 06:18:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:46,207 INFO L225 Difference]: With dead ends: 101 [2024-11-09 06:18:46,207 INFO L226 Difference]: Without dead ends: 101 [2024-11-09 06:18:46,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:18:46,209 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 32 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:46,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 208 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-09 06:18:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 85. [2024-11-09 06:18:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 73 states have internal predecessors, (78), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:18:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2024-11-09 06:18:46,219 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 13 [2024-11-09 06:18:46,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:46,220 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2024-11-09 06:18:46,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-09 06:18:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2024-11-09 06:18:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 06:18:46,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:46,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:46,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:46,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:46,423 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:46,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1303849417, now seen corresponding path program 1 times [2024-11-09 06:18:46,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:46,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099100489] [2024-11-09 06:18:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:46,424 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 [2024-11-09 06:18:46,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:46,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:46,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:46,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:18:46,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:46,755 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:46,755 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099100489] [2024-11-09 06:18:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099100489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:46,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:46,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:18:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247663842] [2024-11-09 06:18:46,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:46,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:18:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:46,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:18:46,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:46,759 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-09 06:18:47,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:47,417 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2024-11-09 06:18:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:18:47,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 13 [2024-11-09 06:18:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:47,419 INFO L225 Difference]: With dead ends: 99 [2024-11-09 06:18:47,419 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 06:18:47,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:18:47,421 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 36 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:47,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 160 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 06:18:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2024-11-09 06:18:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 73 states have internal predecessors, (77), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:18:47,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-11-09 06:18:47,430 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 13 [2024-11-09 06:18:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:47,430 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-11-09 06:18:47,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-11-09 06:18:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-11-09 06:18:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 06:18:47,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:47,432 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:47,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:47,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:47,635 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:47,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:47,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2031085508, now seen corresponding path program 1 times [2024-11-09 06:18:47,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:47,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857713388] [2024-11-09 06:18:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:47,641 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 [2024-11-09 06:18:47,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:47,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:47,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:47,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:18:47,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:47,754 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 [2024-11-09 06:18:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:47,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:47,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:47,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857713388] [2024-11-09 06:18:47,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857713388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:47,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:47,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:18:47,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854383532] [2024-11-09 06:18:47,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:47,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 06:18:47,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 06:18:47,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:18:47,871 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:48,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:48,490 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2024-11-09 06:18:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:18:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 06:18:48,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:48,492 INFO L225 Difference]: With dead ends: 103 [2024-11-09 06:18:48,492 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 06:18:48,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:18:48,493 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 23 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:48,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 335 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 06:18:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2024-11-09 06:18:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 83 states have internal predecessors, (90), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:18:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2024-11-09 06:18:48,512 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 16 [2024-11-09 06:18:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:48,516 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2024-11-09 06:18:48,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:48,517 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2024-11-09 06:18:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 06:18:48,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:48,517 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:48,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:48,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:48,718 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:48,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:48,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2031085507, now seen corresponding path program 1 times [2024-11-09 06:18:48,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:48,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782877775] [2024-11-09 06:18:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:48,720 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 [2024-11-09 06:18:48,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:48,721 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:48,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:48,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 06:18:48,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:48,856 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 [2024-11-09 06:18:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:49,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:49,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782877775] [2024-11-09 06:18:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782877775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:49,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:18:49,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423597281] [2024-11-09 06:18:49,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:49,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:18:49,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:49,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:18:49,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:18:49,103 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:49,819 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2024-11-09 06:18:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:18:49,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 06:18:49,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:49,821 INFO L225 Difference]: With dead ends: 101 [2024-11-09 06:18:49,822 INFO L226 Difference]: Without dead ends: 101 [2024-11-09 06:18:49,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:18:49,823 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 20 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:49,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 418 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:18:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-09 06:18:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2024-11-09 06:18:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 83 states have internal predecessors, (88), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-09 06:18:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2024-11-09 06:18:49,831 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 16 [2024-11-09 06:18:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:49,831 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2024-11-09 06:18:49,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2024-11-09 06:18:49,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 06:18:49,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:49,833 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:49,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:50,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:50,036 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:50,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1902002789, now seen corresponding path program 1 times [2024-11-09 06:18:50,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:50,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960191355] [2024-11-09 06:18:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:50,037 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 [2024-11-09 06:18:50,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:50,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:50,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:50,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:18:50,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:50,186 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:50,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:50,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960191355] [2024-11-09 06:18:50,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960191355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:50,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:50,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:18:50,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034901037] [2024-11-09 06:18:50,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:50,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:18:50,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:50,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:18:50,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:18:50,193 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:50,219 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2024-11-09 06:18:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:18:50,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-09 06:18:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:50,220 INFO L225 Difference]: With dead ends: 81 [2024-11-09 06:18:50,220 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 06:18:50,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:18:50,222 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:50,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 289 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:18:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 06:18:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-09 06:18:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 51 states have (on average 1.411764705882353) internal successors, (72), 69 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:18:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2024-11-09 06:18:50,233 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 16 [2024-11-09 06:18:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:50,233 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2024-11-09 06:18:50,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2024-11-09 06:18:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 06:18:50,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:50,235 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:50,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:18:50,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:50,436 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:50,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1958018817, now seen corresponding path program 1 times [2024-11-09 06:18:50,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:50,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712598756] [2024-11-09 06:18:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:50,437 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 [2024-11-09 06:18:50,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:50,439 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:50,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-09 06:18:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:50,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:18:50,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:50,589 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:50,590 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:50,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712598756] [2024-11-09 06:18:50,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712598756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:50,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:50,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:18:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037151344] [2024-11-09 06:18:50,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:50,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:18:50,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:50,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:18:50,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:18:50,593 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:50,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:50,824 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2024-11-09 06:18:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:18:50,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 06:18:50,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:50,826 INFO L225 Difference]: With dead ends: 80 [2024-11-09 06:18:50,826 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 06:18:50,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:50,827 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 9 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:50,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 188 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:18:50,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 06:18:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-09 06:18:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.392156862745098) internal successors, (71), 68 states have internal predecessors, (71), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:18:50,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2024-11-09 06:18:50,832 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 18 [2024-11-09 06:18:50,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:50,833 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2024-11-09 06:18:50,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:50,833 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2024-11-09 06:18:50,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 06:18:50,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:50,834 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:50,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 06:18:51,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:51,035 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:51,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1958018816, now seen corresponding path program 1 times [2024-11-09 06:18:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367843826] [2024-11-09 06:18:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:51,037 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 [2024-11-09 06:18:51,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:51,040 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:51,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (13)] Waiting until timeout for monitored process [2024-11-09 06:18:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:51,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 06:18:51,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:51,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:51,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:51,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367843826] [2024-11-09 06:18:51,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367843826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:51,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:51,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:18:51,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450018513] [2024-11-09 06:18:51,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:51,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:18:51,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:18:51,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:18:51,299 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:51,641 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-11-09 06:18:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:18:51,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-09 06:18:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:51,643 INFO L225 Difference]: With dead ends: 79 [2024-11-09 06:18:51,643 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 06:18:51,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:18:51,644 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 74 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:51,645 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 234 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:18:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 06:18:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-09 06:18:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 67 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:18:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2024-11-09 06:18:51,650 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 18 [2024-11-09 06:18:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:51,651 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2024-11-09 06:18:51,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2024-11-09 06:18:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:18:51,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:51,652 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:51,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (13)] Ended with exit code 0 [2024-11-09 06:18:51,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:51,853 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:51,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1459385330, now seen corresponding path program 1 times [2024-11-09 06:18:51,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:51,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312111532] [2024-11-09 06:18:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:51,854 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 [2024-11-09 06:18:51,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:51,858 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:51,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:51,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:18:51,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:52,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:52,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:52,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312111532] [2024-11-09 06:18:52,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312111532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:52,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:52,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:18:52,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743480198] [2024-11-09 06:18:52,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:52,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:18:52,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:52,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:18:52,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:52,143 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:52,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:52,574 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-11-09 06:18:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:18:52,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 06:18:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:52,576 INFO L225 Difference]: With dead ends: 77 [2024-11-09 06:18:52,576 INFO L226 Difference]: Without dead ends: 77 [2024-11-09 06:18:52,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:18:52,577 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 92 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:52,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 67 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:18:52,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-09 06:18:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-09 06:18:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 65 states have internal predecessors, (68), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 06:18:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-11-09 06:18:52,591 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 19 [2024-11-09 06:18:52,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:52,591 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-11-09 06:18:52,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:52,591 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-11-09 06:18:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 06:18:52,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:52,592 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:52,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:52,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:52,793 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:52,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:52,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1459385331, now seen corresponding path program 1 times [2024-11-09 06:18:52,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:52,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623076252] [2024-11-09 06:18:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:52,795 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 [2024-11-09 06:18:52,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:52,799 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:52,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (15)] Waiting until timeout for monitored process [2024-11-09 06:18:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:52,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:18:52,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:53,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:53,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:53,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623076252] [2024-11-09 06:18:53,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623076252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:53,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:53,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:18:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619946921] [2024-11-09 06:18:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:53,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:18:53,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:18:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:18:53,155 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:53,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:53,573 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2024-11-09 06:18:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:18:53,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2024-11-09 06:18:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:53,574 INFO L225 Difference]: With dead ends: 87 [2024-11-09 06:18:53,574 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 06:18:53,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 06:18:53,575 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 20 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:53,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 200 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:18:53,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 06:18:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2024-11-09 06:18:53,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 71 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-09 06:18:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2024-11-09 06:18:53,581 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 19 [2024-11-09 06:18:53,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:53,581 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2024-11-09 06:18:53,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 06:18:53,582 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2024-11-09 06:18:53,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-09 06:18:53,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:53,583 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:53,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (15)] Ended with exit code 0 [2024-11-09 06:18:53,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:53,786 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:53,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2101785574, now seen corresponding path program 1 times [2024-11-09 06:18:53,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:53,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736617986] [2024-11-09 06:18:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:53,787 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 [2024-11-09 06:18:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:53,788 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:53,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (16)] Waiting until timeout for monitored process [2024-11-09 06:18:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:53,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 06:18:53,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:53,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:53,931 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:53,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736617986] [2024-11-09 06:18:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736617986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:53,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:53,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:18:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873456391] [2024-11-09 06:18:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:53,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:18:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:18:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:18:53,933 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:18:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:54,158 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2024-11-09 06:18:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:18:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-09 06:18:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:54,160 INFO L225 Difference]: With dead ends: 86 [2024-11-09 06:18:54,160 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 06:18:54,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:18:54,161 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:54,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 74 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:18:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 06:18:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-09 06:18:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.380952380952381) internal successors, (58), 56 states have internal predecessors, (58), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-11-09 06:18:54,166 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 24 [2024-11-09 06:18:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:54,166 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-11-09 06:18:54,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:18:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-11-09 06:18:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:18:54,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:54,168 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:54,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (16)] Ended with exit code 0 [2024-11-09 06:18:54,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:54,368 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:54,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:54,369 INFO L85 PathProgramCache]: Analyzing trace with hash -929247957, now seen corresponding path program 1 times [2024-11-09 06:18:54,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569639715] [2024-11-09 06:18:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:54,370 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 [2024-11-09 06:18:54,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:54,372 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:54,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (17)] Waiting until timeout for monitored process [2024-11-09 06:18:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:54,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 06:18:54,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:54,509 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 [2024-11-09 06:18:54,899 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 [2024-11-09 06:18:54,908 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 [2024-11-09 06:18:55,160 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 17 treesize of output 9 [2024-11-09 06:18:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:55,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:55,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:55,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569639715] [2024-11-09 06:18:55,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569639715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:55,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:55,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 06:18:55,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59559287] [2024-11-09 06:18:55,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:55,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 06:18:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 06:18:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:18:55,286 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:18:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:56,841 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2024-11-09 06:18:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 06:18:56,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2024-11-09 06:18:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:56,843 INFO L225 Difference]: With dead ends: 86 [2024-11-09 06:18:56,843 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 06:18:56,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:18:56,844 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 71 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:56,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 307 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:18:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 06:18:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2024-11-09 06:18:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 55 states have internal predecessors, (57), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2024-11-09 06:18:56,848 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 27 [2024-11-09 06:18:56,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:56,849 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2024-11-09 06:18:56,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:18:56,849 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2024-11-09 06:18:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 06:18:56,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:56,850 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:56,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (17)] Forceful destruction successful, exit code 0 [2024-11-09 06:18:57,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:57,051 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:57,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:57,051 INFO L85 PathProgramCache]: Analyzing trace with hash -929247958, now seen corresponding path program 1 times [2024-11-09 06:18:57,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:57,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196196237] [2024-11-09 06:18:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:57,052 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 [2024-11-09 06:18:57,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:57,056 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:57,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (18)] Waiting until timeout for monitored process [2024-11-09 06:18:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:57,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:18:57,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:57,188 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 [2024-11-09 06:18:57,412 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 [2024-11-09 06:18:57,585 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 11 [2024-11-09 06:18:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:57,685 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:57,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:57,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196196237] [2024-11-09 06:18:57,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196196237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:57,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:57,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 06:18:57,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565790870] [2024-11-09 06:18:57,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:57,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:18:57,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:18:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:18:57,688 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:18:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:18:59,148 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2024-11-09 06:18:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:18:59,149 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2024-11-09 06:18:59,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:18:59,150 INFO L225 Difference]: With dead ends: 92 [2024-11-09 06:18:59,150 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 06:18:59,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:18:59,151 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 83 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:18:59,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 269 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 06:18:59,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 06:18:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2024-11-09 06:18:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 54 states have internal predecessors, (56), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:18:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-11-09 06:18:59,154 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 27 [2024-11-09 06:18:59,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:18:59,155 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-11-09 06:18:59,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:18:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-11-09 06:18:59,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:18:59,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:18:59,157 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:18:59,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (18)] Ended with exit code 0 [2024-11-09 06:18:59,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:18:59,358 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:18:59,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:18:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash -182957420, now seen corresponding path program 1 times [2024-11-09 06:18:59,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:18:59,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852291910] [2024-11-09 06:18:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:18:59,359 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 [2024-11-09 06:18:59,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:18:59,361 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:18:59,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (19)] Waiting until timeout for monitored process [2024-11-09 06:18:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:18:59,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 06:18:59,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:18:59,768 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 [2024-11-09 06:18:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:18:59,957 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:18:59,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:18:59,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852291910] [2024-11-09 06:18:59,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852291910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:18:59,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:18:59,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 06:18:59,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216672442] [2024-11-09 06:18:59,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:18:59,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:18:59,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:18:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:18:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:18:59,960 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:00,703 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2024-11-09 06:19:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 06:19:00,705 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-09 06:19:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:00,708 INFO L225 Difference]: With dead ends: 80 [2024-11-09 06:19:00,708 INFO L226 Difference]: Without dead ends: 80 [2024-11-09 06:19:00,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-09 06:19:00,709 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 61 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:00,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 390 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:19:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-09 06:19:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2024-11-09 06:19:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 56 states have internal predecessors, (58), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:19:00,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2024-11-09 06:19:00,717 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 33 [2024-11-09 06:19:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:00,718 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2024-11-09 06:19:00,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:00,718 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2024-11-09 06:19:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:19:00,719 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:00,719 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:00,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (19)] Ended with exit code 0 [2024-11-09 06:19:00,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:00,920 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:00,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash -195262770, now seen corresponding path program 1 times [2024-11-09 06:19:00,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:00,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177798948] [2024-11-09 06:19:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:00,922 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 [2024-11-09 06:19:00,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:00,926 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:00,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (20)] Waiting until timeout for monitored process [2024-11-09 06:19:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:01,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:19:01,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:01,076 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 [2024-11-09 06:19:01,323 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 [2024-11-09 06:19:01,505 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 11 [2024-11-09 06:19:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:01,712 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:01,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:01,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177798948] [2024-11-09 06:19:01,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177798948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:01,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:01,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 06:19:01,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048071988] [2024-11-09 06:19:01,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:01,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:19:01,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:01,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:19:01,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:19:01,715 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:03,595 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2024-11-09 06:19:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 06:19:03,595 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-09 06:19:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:03,596 INFO L225 Difference]: With dead ends: 83 [2024-11-09 06:19:03,596 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 06:19:03,597 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2024-11-09 06:19:03,598 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 93 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:03,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 308 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 06:19:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 06:19:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2024-11-09 06:19:03,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 64 states have internal predecessors, (71), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2024-11-09 06:19:03,603 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 33 [2024-11-09 06:19:03,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:03,603 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2024-11-09 06:19:03,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2024-11-09 06:19:03,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:19:03,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:03,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:03,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (20)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:03,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:03,806 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:03,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:03,806 INFO L85 PathProgramCache]: Analyzing trace with hash -195262769, now seen corresponding path program 1 times [2024-11-09 06:19:03,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:03,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122954973] [2024-11-09 06:19:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:03,807 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 [2024-11-09 06:19:03,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:03,809 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:03,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (21)] Waiting until timeout for monitored process [2024-11-09 06:19:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:03,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 06:19:03,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:03,973 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 [2024-11-09 06:19:04,297 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 [2024-11-09 06:19:04,305 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 [2024-11-09 06:19:04,542 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 17 treesize of output 9 [2024-11-09 06:19:04,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:04,810 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:04,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:04,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122954973] [2024-11-09 06:19:04,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122954973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:04,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:04,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 06:19:04,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227310048] [2024-11-09 06:19:04,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:04,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 06:19:04,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:04,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 06:19:04,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:19:04,814 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:06,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:06,636 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2024-11-09 06:19:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 06:19:06,637 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2024-11-09 06:19:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:06,638 INFO L225 Difference]: With dead ends: 81 [2024-11-09 06:19:06,638 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 06:19:06,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:19:06,639 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 65 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:06,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 348 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 06:19:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 06:19:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2024-11-09 06:19:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 64 states have internal predecessors, (69), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2024-11-09 06:19:06,646 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 33 [2024-11-09 06:19:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:06,648 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2024-11-09 06:19:06,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2024-11-09 06:19:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 06:19:06,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:06,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:06,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (21)] Ended with exit code 0 [2024-11-09 06:19:06,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:06,850 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:06,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:06,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1687420483, now seen corresponding path program 1 times [2024-11-09 06:19:06,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:06,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966344892] [2024-11-09 06:19:06,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:06,851 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 [2024-11-09 06:19:06,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:06,855 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:06,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (22)] Waiting until timeout for monitored process [2024-11-09 06:19:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:07,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 06:19:07,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:07,170 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:19:07,170 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 [2024-11-09 06:19:07,261 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 7 treesize of output 3 [2024-11-09 06:19:07,625 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 [2024-11-09 06:19:07,727 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 27 treesize of output 11 [2024-11-09 06:19:07,819 INFO L349 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2024-11-09 06:19:07,820 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 1 case distinctions, treesize of input 23 treesize of output 34 [2024-11-09 06:19:07,862 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 [2024-11-09 06:19:08,345 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 7 treesize of output 3 [2024-11-09 06:19:08,473 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 15 [2024-11-09 06:19:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:09,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:09,241 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:09,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966344892] [2024-11-09 06:19:09,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966344892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:09,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:09,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-09 06:19:09,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294439831] [2024-11-09 06:19:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:09,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 06:19:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:09,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 06:19:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:19:09,244 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:13,125 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-11-09 06:19:13,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 06:19:13,126 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2024-11-09 06:19:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:13,127 INFO L225 Difference]: With dead ends: 79 [2024-11-09 06:19:13,127 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 06:19:13,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=160, Invalid=1246, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 06:19:13,128 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 105 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:13,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 329 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 853 Invalid, 4 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 06:19:13,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 06:19:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2024-11-09 06:19:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 64 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2024-11-09 06:19:13,133 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 36 [2024-11-09 06:19:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:13,133 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2024-11-09 06:19:13,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2024-11-09 06:19:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 06:19:13,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:13,134 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:13,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (22)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:13,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:13,335 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:13,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:13,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1687420482, now seen corresponding path program 1 times [2024-11-09 06:19:13,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374784162] [2024-11-09 06:19:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:13,336 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 [2024-11-09 06:19:13,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:13,337 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:13,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (23)] Waiting until timeout for monitored process [2024-11-09 06:19:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:13,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-09 06:19:13,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:13,722 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:19:13,722 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 [2024-11-09 06:19:14,361 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 [2024-11-09 06:19:14,393 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 [2024-11-09 06:19:14,532 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 27 treesize of output 11 [2024-11-09 06:19:14,580 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 27 treesize of output 11 [2024-11-09 06:19:14,674 INFO L349 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2024-11-09 06:19:14,674 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 1 case distinctions, treesize of input 27 treesize of output 27 [2024-11-09 06:19:14,757 INFO L349 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2024-11-09 06:19:14,757 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 1 case distinctions, treesize of input 23 treesize of output 34 [2024-11-09 06:19:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:16,255 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:16,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:16,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374784162] [2024-11-09 06:19:16,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374784162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:16,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:16,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-09 06:19:16,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562005356] [2024-11-09 06:19:16,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:16,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 06:19:16,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:16,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 06:19:16,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2024-11-09 06:19:16,260 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 23 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:19,483 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2024-11-09 06:19:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 06:19:19,486 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2024-11-09 06:19:19,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:19,487 INFO L225 Difference]: With dead ends: 78 [2024-11-09 06:19:19,487 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 06:19:19,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 06:19:19,489 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 79 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:19,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 372 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 06:19:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 06:19:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2024-11-09 06:19:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 64 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2024-11-09 06:19:19,493 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 36 [2024-11-09 06:19:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:19,494 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2024-11-09 06:19:19,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.380952380952381) internal successors, (29), 18 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2024-11-09 06:19:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 06:19:19,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:19,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:19,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (23)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:19,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:19,696 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:19,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:19,696 INFO L85 PathProgramCache]: Analyzing trace with hash -770427372, now seen corresponding path program 1 times [2024-11-09 06:19:19,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:19,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530679244] [2024-11-09 06:19:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:19,697 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 [2024-11-09 06:19:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:19,698 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:19,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (24)] Waiting until timeout for monitored process [2024-11-09 06:19:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:19,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 06:19:19,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:19,968 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:19:19,968 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 [2024-11-09 06:19:20,313 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 [2024-11-09 06:19:20,443 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-09 06:19:20,443 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 34 [2024-11-09 06:19:20,451 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 23 treesize of output 13 [2024-11-09 06:19:20,935 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 25 treesize of output 17 [2024-11-09 06:19:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:21,580 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:21,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:21,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530679244] [2024-11-09 06:19:21,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530679244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:21,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:21,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-09 06:19:21,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791846705] [2024-11-09 06:19:21,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:21,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 06:19:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:21,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 06:19:21,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:19:21,582 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 22 states, 20 states have (on average 1.5) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:26,613 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] [2024-11-09 06:19:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:27,981 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2024-11-09 06:19:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 06:19:27,982 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.5) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2024-11-09 06:19:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:27,983 INFO L225 Difference]: With dead ends: 76 [2024-11-09 06:19:27,983 INFO L226 Difference]: Without dead ends: 76 [2024-11-09 06:19:27,984 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 06:19:27,985 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 195 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 30 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:27,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 146 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 886 Invalid, 5 Unknown, 0 Unchecked, 4.8s Time] [2024-11-09 06:19:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-09 06:19:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-09 06:19:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 64 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2024-11-09 06:19:27,990 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 37 [2024-11-09 06:19:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:27,991 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2024-11-09 06:19:27,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.5) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2024-11-09 06:19:27,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 06:19:27,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:27,992 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:28,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (24)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:28,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:28,193 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:28,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash -770427371, now seen corresponding path program 1 times [2024-11-09 06:19:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238733829] [2024-11-09 06:19:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:28,195 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 [2024-11-09 06:19:28,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:28,196 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:28,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (25)] Waiting until timeout for monitored process [2024-11-09 06:19:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:28,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-09 06:19:28,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:28,655 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:19:28,655 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 [2024-11-09 06:19:29,156 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 [2024-11-09 06:19:29,188 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 [2024-11-09 06:19:29,359 INFO L349 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2024-11-09 06:19:29,360 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 46 [2024-11-09 06:19:30,940 INFO L349 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2024-11-09 06:19:30,940 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 40 [2024-11-09 06:19:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:32,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:32,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238733829] [2024-11-09 06:19:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238733829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 06:19:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902690066] [2024-11-09 06:19:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:32,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:19:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:19:32,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:19:32,696 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:37,135 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 [] [2024-11-09 06:19:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:39,577 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2024-11-09 06:19:39,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 06:19:39,577 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2024-11-09 06:19:39,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:39,578 INFO L225 Difference]: With dead ends: 76 [2024-11-09 06:19:39,578 INFO L226 Difference]: Without dead ends: 76 [2024-11-09 06:19:39,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=214, Invalid=1426, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 06:19:39,580 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 119 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:39,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 135 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 06:19:39,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-09 06:19:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-09 06:19:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.25) internal successors, (65), 64 states have internal predecessors, (65), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-09 06:19:39,585 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 37 [2024-11-09 06:19:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:39,585 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-09 06:19:39,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 06:19:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-09 06:19:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 06:19:39,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:39,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:39,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (25)] Ended with exit code 0 [2024-11-09 06:19:39,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:39,791 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:39,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1522335944, now seen corresponding path program 1 times [2024-11-09 06:19:39,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:39,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455173336] [2024-11-09 06:19:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:39,792 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 [2024-11-09 06:19:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:39,794 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:39,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (26)] Waiting until timeout for monitored process [2024-11-09 06:19:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:39,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 06:19:39,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:40,260 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 [2024-11-09 06:19:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:40,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:40,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:40,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455173336] [2024-11-09 06:19:40,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455173336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:40,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:40,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 06:19:40,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234062855] [2024-11-09 06:19:40,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:40,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:19:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:40,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:19:40,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:19:40,298 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:19:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:41,255 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2024-11-09 06:19:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:19:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-11-09 06:19:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:41,256 INFO L225 Difference]: With dead ends: 78 [2024-11-09 06:19:41,256 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 06:19:41,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:19:41,257 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 20 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:41,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 249 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:19:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 06:19:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-09 06:19:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 65 states have internal predecessors, (68), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2024-11-09 06:19:41,261 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 42 [2024-11-09 06:19:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:41,262 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2024-11-09 06:19:41,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 06:19:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2024-11-09 06:19:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 06:19:41,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:41,264 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:41,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (26)] Ended with exit code 0 [2024-11-09 06:19:41,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:41,465 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:41,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1522335943, now seen corresponding path program 1 times [2024-11-09 06:19:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:41,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709749443] [2024-11-09 06:19:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:41,466 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 [2024-11-09 06:19:41,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:41,471 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:41,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (27)] Waiting until timeout for monitored process [2024-11-09 06:19:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:41,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 06:19:41,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:42,084 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:19:42,084 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 [2024-11-09 06:19:42,096 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 [2024-11-09 06:19:43,010 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 [2024-11-09 06:19:43,026 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 [2024-11-09 06:19:43,189 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 27 treesize of output 11 [2024-11-09 06:19:43,210 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 27 treesize of output 11 [2024-11-09 06:19:43,298 INFO L349 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2024-11-09 06:19:43,299 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 1 case distinctions, treesize of input 23 treesize of output 34 [2024-11-09 06:19:43,399 INFO L349 Elim1Store]: treesize reduction 29, result has 44.2 percent of original size [2024-11-09 06:19:43,400 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 1 case distinctions, treesize of input 27 treesize of output 27 [2024-11-09 06:19:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:44,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:44,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709749443] [2024-11-09 06:19:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709749443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:44,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:44,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-09 06:19:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814962628] [2024-11-09 06:19:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:44,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:19:44,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:19:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:19:44,806 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 06:19:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:48,892 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2024-11-09 06:19:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 06:19:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2024-11-09 06:19:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:48,895 INFO L225 Difference]: With dead ends: 78 [2024-11-09 06:19:48,895 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 06:19:48,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 06:19:48,896 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 97 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:48,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 276 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 06:19:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 06:19:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-09 06:19:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 65 states have internal predecessors, (67), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2024-11-09 06:19:48,901 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 42 [2024-11-09 06:19:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:48,902 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2024-11-09 06:19:48,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 17 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 06:19:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2024-11-09 06:19:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 06:19:48,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:48,903 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:48,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (27)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:49,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:49,104 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:49,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash 855698291, now seen corresponding path program 1 times [2024-11-09 06:19:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:49,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120866225] [2024-11-09 06:19:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:49,105 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 [2024-11-09 06:19:49,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:49,107 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:49,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (28)] Waiting until timeout for monitored process [2024-11-09 06:19:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:49,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 06:19:49,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:49,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:49,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:49,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120866225] [2024-11-09 06:19:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120866225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:49,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:49,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:19:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879160490] [2024-11-09 06:19:49,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:49,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:19:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:49,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:19:49,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:19:49,805 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:19:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:50,484 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2024-11-09 06:19:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:19:50,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2024-11-09 06:19:50,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:50,486 INFO L225 Difference]: With dead ends: 77 [2024-11-09 06:19:50,486 INFO L226 Difference]: Without dead ends: 77 [2024-11-09 06:19:50,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:19:50,487 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 47 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:50,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 151 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:19:50,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-09 06:19:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-09 06:19:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 64 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-09 06:19:50,491 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 48 [2024-11-09 06:19:50,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:50,491 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-09 06:19:50,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:19:50,492 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-09 06:19:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 06:19:50,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:50,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:50,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (28)] Ended with exit code 0 [2024-11-09 06:19:50,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:19:50,693 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:50,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash 843392941, now seen corresponding path program 1 times [2024-11-09 06:19:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497576980] [2024-11-09 06:19:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:50,695 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 [2024-11-09 06:19:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:50,696 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:50,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (29)] Waiting until timeout for monitored process [2024-11-09 06:19:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:50,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:19:50,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:51,112 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 [2024-11-09 06:19:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:51,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:51,409 INFO L349 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2024-11-09 06:19:51,409 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 22 treesize of output 21 [2024-11-09 06:19:51,456 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-11-09 06:19:51,457 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 20 treesize of output 19 [2024-11-09 06:19:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:51,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:19:51,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497576980] [2024-11-09 06:19:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497576980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:19:51,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [628115018] [2024-11-09 06:19:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:51,635 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:19:51,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:19:51,639 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:19:51,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 06:19:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:52,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 06:19:52,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:52,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:19:52,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 28 [2024-11-09 06:19:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:52,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:52,606 INFO L349 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2024-11-09 06:19:52,606 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 22 treesize of output 21 [2024-11-09 06:19:52,650 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-11-09 06:19:52,650 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 20 treesize of output 19 [2024-11-09 06:19:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [628115018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:19:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024634783] [2024-11-09 06:19:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:52,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:19:52,725 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:52,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 06:19:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:52,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:19:52,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:52,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:52,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024634783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:52,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-09 06:19:52,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 12, 14, 12] total 19 [2024-11-09 06:19:52,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122720606] [2024-11-09 06:19:52,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:52,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:19:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:19:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:19:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:19:53,000 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 06:19:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:53,359 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2024-11-09 06:19:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:19:53,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2024-11-09 06:19:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:53,361 INFO L225 Difference]: With dead ends: 76 [2024-11-09 06:19:53,361 INFO L226 Difference]: Without dead ends: 76 [2024-11-09 06:19:53,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:19:53,362 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 16 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:53,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 170 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:19:53,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-09 06:19:53,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-09 06:19:53,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 63 states have internal predecessors, (65), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 06:19:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-09 06:19:53,366 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 48 [2024-11-09 06:19:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:53,366 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-09 06:19:53,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 06:19:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-09 06:19:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 06:19:53,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:53,368 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:53,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:53,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (29)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:53,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:53,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:19:53,969 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:19:53,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:53,970 INFO L85 PathProgramCache]: Analyzing trace with hash 843392942, now seen corresponding path program 1 times [2024-11-09 06:19:53,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:19:53,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496303757] [2024-11-09 06:19:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:53,970 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 [2024-11-09 06:19:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:19:53,974 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:19:53,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (32)] Waiting until timeout for monitored process [2024-11-09 06:19:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:54,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:19:54,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:54,604 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 29 treesize of output 17 [2024-11-09 06:19:54,609 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 44 treesize of output 20 [2024-11-09 06:19:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:55,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:56,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:19:56,445 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 44 treesize of output 46 [2024-11-09 06:19:58,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:19:58,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 151 [2024-11-09 06:20:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:02,089 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:20:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496303757] [2024-11-09 06:20:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496303757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [668896979] [2024-11-09 06:20:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:02,089 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:20:02,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:20:02,091 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:20:02,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 06:20:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:02,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 06:20:02,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:03,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:20:03,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 64 [2024-11-09 06:20:03,805 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 44 treesize of output 20 [2024-11-09 06:20:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:04,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:04,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:20:04,403 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 44 treesize of output 46 [2024-11-09 06:20:06,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:20:06,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 151 [2024-11-09 06:20:07,408 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 58 treesize of output 22 [2024-11-09 06:20:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [668896979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375284502] [2024-11-09 06:20:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:07,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:07,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:20:07,438 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:07,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 06:20:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:07,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 06:20:07,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:08,047 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 [2024-11-09 06:20:09,614 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 [2024-11-09 06:20:09,624 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 [2024-11-09 06:20:11,961 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 9 treesize of output 5 [2024-11-09 06:20:15,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:20:15,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 59 [2024-11-09 06:20:15,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:20:15,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 43 treesize of output 35 [2024-11-09 06:20:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:17,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:20:36,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375284502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:36,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 06:20:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15, 13, 26, 14] total 62 [2024-11-09 06:20:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867224852] [2024-11-09 06:20:36,514 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 06:20:36,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-09 06:20:36,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:20:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-09 06:20:36,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=3640, Unknown=0, NotChecked=0, Total=3906 [2024-11-09 06:20:36,517 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 63 states, 62 states have (on average 1.8225806451612903) internal successors, (113), 51 states have internal predecessors, (113), 11 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-09 06:20:58,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:58,041 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2024-11-09 06:20:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 06:20:58,043 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.8225806451612903) internal successors, (113), 51 states have internal predecessors, (113), 11 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 48 [2024-11-09 06:20:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:58,045 INFO L225 Difference]: With dead ends: 83 [2024-11-09 06:20:58,045 INFO L226 Difference]: Without dead ends: 83 [2024-11-09 06:20:58,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 218 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1741 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=562, Invalid=6748, Unknown=0, NotChecked=0, Total=7310 [2024-11-09 06:20:58,048 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 119 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:58,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 596 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2024-11-09 06:20:58,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-09 06:20:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-09 06:20:58,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 69 states have internal predecessors, (73), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:20:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2024-11-09 06:20:58,055 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 48 [2024-11-09 06:20:58,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:58,055 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2024-11-09 06:20:58,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.8225806451612903) internal successors, (113), 51 states have internal predecessors, (113), 11 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-09 06:20:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2024-11-09 06:20:58,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 06:20:58,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:58,057 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:20:58,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-09 06:20:58,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 06:20:58,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (32)] Forceful destruction successful, exit code 0 [2024-11-09 06:20:58,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:20:58,659 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:20:58,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash 756843249, now seen corresponding path program 1 times [2024-11-09 06:20:58,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:20:58,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819941907] [2024-11-09 06:20:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:58,660 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 [2024-11-09 06:20:58,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:20:58,661 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:20:58,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (35)] Waiting until timeout for monitored process [2024-11-09 06:20:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:58,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 06:20:58,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:59,096 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 7 treesize of output 3 [2024-11-09 06:20:59,101 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 7 treesize of output 3 [2024-11-09 06:20:59,514 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 17 treesize of output 9 [2024-11-09 06:20:59,524 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 7 treesize of output 3 [2024-11-09 06:20:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:20:59,950 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:20:59,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:20:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819941907] [2024-11-09 06:20:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819941907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:20:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 06:20:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737933292] [2024-11-09 06:20:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:59,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:20:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:20:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:20:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:20:59,954 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:21:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:21:01,837 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2024-11-09 06:21:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 06:21:01,838 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 49 [2024-11-09 06:21:01,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:21:01,839 INFO L225 Difference]: With dead ends: 82 [2024-11-09 06:21:01,839 INFO L226 Difference]: Without dead ends: 82 [2024-11-09 06:21:01,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2024-11-09 06:21:01,840 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 56 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:21:01,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 236 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:21:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-09 06:21:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-09 06:21:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 60 states have (on average 1.2) internal successors, (72), 68 states have internal predecessors, (72), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-09 06:21:01,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2024-11-09 06:21:01,845 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 49 [2024-11-09 06:21:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:21:01,845 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2024-11-09 06:21:01,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 06:21:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2024-11-09 06:21:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 06:21:01,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:21:01,847 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:21:01,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (35)] Forceful destruction successful, exit code 0 [2024-11-09 06:21:02,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:21:02,048 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:21:02,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:21:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash -39534466, now seen corresponding path program 1 times [2024-11-09 06:21:02,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:21:02,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240791669] [2024-11-09 06:21:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:02,049 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 [2024-11-09 06:21:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:21:02,050 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:21:02,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (36)] Waiting until timeout for monitored process [2024-11-09 06:21:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:02,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-09 06:21:02,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:21:02,673 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:21:02,674 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 [2024-11-09 06:21:02,693 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 [2024-11-09 06:21:03,366 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 [2024-11-09 06:21:03,513 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 27 treesize of output 11 [2024-11-09 06:21:03,642 INFO L349 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2024-11-09 06:21:03,643 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 1 case distinctions, treesize of input 23 treesize of output 34 [2024-11-09 06:21:03,689 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 [2024-11-09 06:21:04,450 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 15 [2024-11-09 06:21:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:21:06,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:21:07,818 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 06:21:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240791669] [2024-11-09 06:21:07,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240791669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:07,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246092452] [2024-11-09 06:21:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:07,819 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 06:21:07,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 06:21:07,820 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 06:21:07,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-09 06:21:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:08,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-09 06:21:08,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:21:09,197 INFO L349 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2024-11-09 06:21:09,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2024-11-09 06:21:11,665 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 [2024-11-09 06:21:11,745 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 [2024-11-09 06:21:12,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:21:12,169 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 21 treesize of output 20 [2024-11-09 06:21:12,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:21:12,236 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 21 treesize of output 20 [2024-11-09 06:21:15,277 INFO L349 Elim1Store]: treesize reduction 64, result has 32.6 percent of original size [2024-11-09 06:21:15,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 70 [2024-11-09 06:21:15,956 INFO L349 Elim1Store]: treesize reduction 48, result has 49.5 percent of original size [2024-11-09 06:21:15,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 103 [2024-11-09 06:21:20,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2024-11-09 06:21:20,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:21:20,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 25 [2024-11-09 06:21:22,781 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 33 treesize of output 23 [2024-11-09 06:21:23,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2024-11-09 06:21:23,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:21:23,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 25 [2024-11-09 06:21:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:21:26,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:21:28,789 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 72 treesize of output 66 [2024-11-09 06:21:29,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [246092452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:29,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693553961] [2024-11-09 06:21:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:21:29,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:21:29,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:21:29,296 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:21:29,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-09 06:21:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:21:29,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-09 06:21:29,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:21:31,325 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-09 06:21:31,326 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 12 treesize of output 18 [2024-11-09 06:21:31,385 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 06:21:31,385 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 [2024-11-09 06:21:34,731 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 [2024-11-09 06:21:34,757 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 [2024-11-09 06:21:35,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:21:35,852 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 21 treesize of output 20 [2024-11-09 06:21:35,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:21:35,941 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 21 treesize of output 20 [2024-11-09 06:21:37,398 INFO L349 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2024-11-09 06:21:37,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 62 [2024-11-09 06:21:37,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:21:37,625 INFO L349 Elim1Store]: treesize reduction 46, result has 35.2 percent of original size [2024-11-09 06:21:37,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2024-11-09 06:21:44,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:21:44,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 29 [2024-11-09 06:21:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:21:44,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-09 06:21:48,411 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 33 treesize of output 23 [2024-11-09 06:21:49,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 06:21:49,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2024-11-09 06:21:49,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:21:49,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2024-11-09 06:21:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:21:53,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:21:57,053 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 72 treesize of output 66 [2024-11-09 06:21:58,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693553961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:21:58,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:21:58,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 31, 32] total 87 [2024-11-09 06:21:58,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108865713] [2024-11-09 06:21:58,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:21:58,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-09 06:21:58,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 06:21:58,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-09 06:21:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=10972, Unknown=0, NotChecked=0, Total=11342 [2024-11-09 06:21:58,284 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 88 states, 84 states have (on average 1.5) internal successors, (126), 71 states have internal predecessors, (126), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 06:22:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:29,052 INFO L93 Difference]: Finished difference Result 54 states and 53 transitions. [2024-11-09 06:22:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 06:22:29,052 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 84 states have (on average 1.5) internal successors, (126), 71 states have internal predecessors, (126), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 51 [2024-11-09 06:22:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:29,053 INFO L225 Difference]: With dead ends: 54 [2024-11-09 06:22:29,053 INFO L226 Difference]: Without dead ends: 54 [2024-11-09 06:22:29,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4881 ImplicationChecksByTransitivity, 57.9s TimeCoverageRelationStatistics Valid=848, Invalid=18891, Unknown=1, NotChecked=0, Total=19740 [2024-11-09 06:22:29,058 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 151 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:29,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 579 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2821 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-11-09 06:22:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-09 06:22:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-09 06:22:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 43 states have (on average 1.0) internal successors, (43), 43 states have internal predecessors, (43), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 06:22:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 53 transitions. [2024-11-09 06:22:29,061 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 53 transitions. Word has length 51 [2024-11-09 06:22:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:29,061 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 53 transitions. [2024-11-09 06:22:29,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 84 states have (on average 1.5) internal successors, (126), 71 states have internal predecessors, (126), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-09 06:22:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 53 transitions. [2024-11-09 06:22:29,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 06:22:29,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:29,063 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:29,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-09 06:22:29,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (36)] Ended with exit code 0 [2024-11-09 06:22:29,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2024-11-09 06:22:29,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 06:22:29,664 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-09 06:22:29,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:29,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1951630490, now seen corresponding path program 1 times [2024-11-09 06:22:29,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 06:22:29,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917471108] [2024-11-09 06:22:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:29,666 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 [2024-11-09 06:22:29,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 06:22:29,670 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 06:22:29,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (39)] Waiting until timeout for monitored process [2024-11-09 06:22:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:22:30,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:22:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:22:30,260 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-09 06:22:30,260 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:22:30,262 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (28 of 29 remaining) [2024-11-09 06:22:30,264 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 29 remaining) [2024-11-09 06:22:30,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 29 remaining) [2024-11-09 06:22:30,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 29 remaining) [2024-11-09 06:22:30,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 29 remaining) [2024-11-09 06:22:30,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 29 remaining) [2024-11-09 06:22:30,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2024-11-09 06:22:30,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2024-11-09 06:22:30,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2024-11-09 06:22:30,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2024-11-09 06:22:30,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2024-11-09 06:22:30,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2024-11-09 06:22:30,267 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2024-11-09 06:22:30,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2024-11-09 06:22:30,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 29 remaining) [2024-11-09 06:22:30,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 29 remaining) [2024-11-09 06:22:30,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 29 remaining) [2024-11-09 06:22:30,268 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 29 remaining) [2024-11-09 06:22:30,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 29 remaining) [2024-11-09 06:22:30,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 29 remaining) [2024-11-09 06:22:30,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 29 remaining) [2024-11-09 06:22:30,269 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2024-11-09 06:22:30,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2024-11-09 06:22:30,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2024-11-09 06:22:30,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2024-11-09 06:22:30,270 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2024-11-09 06:22:30,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2024-11-09 06:22:30,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2024-11-09 06:22:30,271 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 29 remaining) [2024-11-09 06:22:30,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 (39)] Forceful destruction successful, exit code 0 [2024-11-09 06:22:30,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 06:22:30,480 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:30,563 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:22:30,567 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:22:30 BoogieIcfgContainer [2024-11-09 06:22:30,568 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:22:30,568 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:22:30,569 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:22:30,569 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:22:30,570 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:18:35" (3/4) ... [2024-11-09 06:22:30,573 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 06:22:30,575 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:22:30,576 INFO L158 Benchmark]: Toolchain (without parser) took 237747.66ms. Allocated memory was 67.1MB in the beginning and 125.8MB in the end (delta: 58.7MB). Free memory was 41.6MB in the beginning and 54.4MB in the end (delta: -12.8MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2024-11-09 06:22:30,576 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:22:30,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1140.49ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 41.5MB in the beginning and 45.3MB in the end (delta: -3.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2024-11-09 06:22:30,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.53ms. Allocated memory is still 86.0MB. Free memory was 45.3MB in the beginning and 42.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:22:30,577 INFO L158 Benchmark]: Boogie Preprocessor took 44.27ms. Allocated memory is still 86.0MB. Free memory was 42.8MB in the beginning and 40.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:22:30,577 INFO L158 Benchmark]: RCFGBuilder took 1008.90ms. Allocated memory is still 86.0MB. Free memory was 40.7MB in the beginning and 40.9MB in the end (delta: -153.6kB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2024-11-09 06:22:30,578 INFO L158 Benchmark]: TraceAbstraction took 235477.17ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 40.4MB in the beginning and 54.4MB in the end (delta: -14.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-09 06:22:30,578 INFO L158 Benchmark]: Witness Printer took 6.70ms. Allocated memory is still 125.8MB. Free memory was 54.4MB in the beginning and 54.4MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:22:30,579 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1140.49ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 41.5MB in the beginning and 45.3MB in the end (delta: -3.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.53ms. Allocated memory is still 86.0MB. Free memory was 45.3MB in the beginning and 42.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.27ms. Allocated memory is still 86.0MB. Free memory was 42.8MB in the beginning and 40.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1008.90ms. Allocated memory is still 86.0MB. Free memory was 40.7MB in the beginning and 40.9MB in the end (delta: -153.6kB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * TraceAbstraction took 235477.17ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 40.4MB in the beginning and 54.4MB in the end (delta: -14.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 6.70ms. Allocated memory is still 125.8MB. Free memory was 54.4MB in the beginning and 54.4MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 780]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 780. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L781] CALL entry_point() [L776] CALL alloc_13() [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) VAL [\old(size)=12, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L765] CALL ldv_list_add(&p->list, &global_list_13) VAL [\old(head)={2:0}, \old(new)={6:4}, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L559] EXPR head->next VAL [\old(head)={2:0}, \old(new)={6:4}, global_list_13={2:0}, head={2:0}, ldv_global_msg_list={1:0}, new={6:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [\old(new)={6:4}, \old(next)={2:0}, \old(prev)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L547] next->prev = new VAL [\old(new)={6:4}, \old(next)={2:0}, \old(prev)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, next={2:0}, prev={2:0}] [L548] new->next = next VAL [\old(new)={6:4}, \old(next)={2:0}, \old(prev)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, prev={2:0}] [L549] new->prev = prev VAL [\old(new)={6:4}, \old(next)={2:0}, \old(prev)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, prev={2:0}] [L550] prev->next = new VAL [\old(new)={6:4}, \old(next)={2:0}, \old(prev)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [\old(head)={2:0}, \old(new)={6:4}, global_list_13={2:0}, head={2:0}, ldv_global_msg_list={1:0}, new={6:4}] [L765] RET ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L776] RET alloc_13() [L777] CALL free_unsafe_13() [L769] struct A13 *p; [L770] struct A13 *n; VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L771] EXPR (&global_list_13)->next VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L771] const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((&global_list_13)->next); [L771] { const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((&global_list_13)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );} [L771] p = ({ const typeof( ((typeof(*p) *)0)->list ) *__mptr = ((&global_list_13)->next); (typeof(*p) *)( (char *)__mptr - ((size_t) &((typeof(*p) *)0)->list) );}) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L771] EXPR (p)->list.next VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L771] const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); [L771] { const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); (typeof(*(p)) *)( (char *)__mptr - ((size_t) &((typeof(*(p)) *)0)->list) );} [L771] n = ({ const typeof( ((typeof(*(p)) *)0)->list ) *__mptr = ((p)->list.next); (typeof(*(p)) *)( (char *)__mptr - ((size_t) &((typeof(*(p)) *)0)->list) );}) [L771] COND FALSE !(&p->list != (&global_list_13)) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, n={2:-4}, p={6:0}] [L771] COND TRUE &p->list != (&global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, n={2:-4}, p={6:0}] [L772] CALL ldv_list_del(&p->list) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L567] EXPR entry->prev VAL [\old(entry)={6:4}, entry={6:4}, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L567] EXPR entry->next VAL [\old(entry)={6:4}, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L567] CALL __ldv_list_del(entry->prev, entry->next) [L554] next->prev = prev VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, next={2:0}, prev={2:0}] [L555] prev->next = next VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L567] RET __ldv_list_del(entry->prev, entry->next) [L772] RET ldv_list_del(&p->list) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, n={2:-4}, p={6:0}] [L771] p = n VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, n={2:-4}, p={2:-4}] [L771] EXPR (n)->list.next VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={2:-4}] [L771] const typeof( ((typeof(*(n)) *)0)->list ) *__mptr = ((n)->list.next); [L771] { const typeof( ((typeof(*(n)) *)0)->list ) *__mptr = ((n)->list.next); (typeof(*(n)) *)( (char *)__mptr - ((size_t) &((typeof(*(n)) *)0)->list) );} [L771] n = ({ const typeof( ((typeof(*(n)) *)0)->list ) *__mptr = ((n)->list.next); (typeof(*(n)) *)( (char *)__mptr - ((size_t) &((typeof(*(n)) *)0)->list) );}) [L771] COND TRUE &p->list != (&global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, n={2:-4}] [L777] RET free_unsafe_13() [L778] CALL LDV_INIT_LIST_HEAD(&global_list_13) VAL [\old(list)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L540] list->next = list VAL [\old(list)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}, list={2:0}] [L541] list->prev = list VAL [\old(list)={2:0}, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L778] RET LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L781] RET entry_point() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 83 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 235.3s, OverallIterations: 32, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 98.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 mSolverCounterUnknown, 2254 SdHoareTripleChecker+Valid, 56.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2223 mSDsluCounter, 7990 SdHoareTripleChecker+Invalid, 51.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6729 mSDsCounter, 349 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14554 IncrementalHoareTripleChecker+Invalid, 14945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 349 mSolverCounterUnsat, 1261 mSDtfsCounter, 14554 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1634 GetRequests, 945 SyntacticMatches, 6 SemanticMatches, 683 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8009 ImplicationChecksByTransitivity, 120.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=8, InterpolantAutomatonStates: 432, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 191 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 121.0s InterpolantComputationTime, 1213 NumberOfCodeBlocks, 1213 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1358 ConstructedInterpolants, 290 QuantifiedInterpolants, 26768 SizeOfPredicates, 314 NumberOfNonLiveVariables, 5964 ConjunctsInSsa, 1062 ConjunctsInUnsatCore, 42 InterpolantComputations, 29 PerfectInterpolantSequences, 10/81 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 06:22:30,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7a595dc-338a-41fb-bd68-f863c2bd3ef2/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample