./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:09,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:09,929 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 21:02:09,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:09,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:09,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:09,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:09,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:09,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:09,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:09,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:09,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:09,983 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:09,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:09,985 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:02:09,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:09,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:02:09,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:09,987 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:02:09,987 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:02:09,988 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:02:09,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:09,989 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:02:09,989 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:02:09,989 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:02:09,990 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:09,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:09,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:09,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:02:09,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:09,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:09,993 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:09,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:09,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:02:09,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:02:09,994 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:09,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:09,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:09,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:09,995 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c [2023-11-21 21:02:10,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:10,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:10,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:10,289 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:10,289 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:10,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-21 21:02:13,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:02:13,674 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:02:13,677 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-21 21:02:13,697 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data/7c3479f30/062fa94a6d9149cda81abf3c23234e3a/FLAGf589f306c [2023-11-21 21:02:13,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data/7c3479f30/062fa94a6d9149cda81abf3c23234e3a [2023-11-21 21:02:13,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:02:13,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:02:13,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:13,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:02:13,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:02:13,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:13" (1/1) ... [2023-11-21 21:02:13,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c974c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:13, skipping insertion in model container [2023-11-21 21:02:13,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:13" (1/1) ... [2023-11-21 21:02:13,794 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:02:14,056 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:02:14,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:14,407 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-21 21:02:14,407 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@96d9a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:14, skipping insertion in model container [2023-11-21 21:02:14,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:14,408 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 21:02:14,410 INFO L158 Benchmark]: Toolchain (without parser) took 693.68ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 80.0MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 21:02:14,411 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:02:14,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 691.20ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 80.0MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 21:02:14,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 691.20ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 80.0MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 817]: 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_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:02:16,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:02:16,962 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 21:02:16,971 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:02:16,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:02:17,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:02:17,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:02:17,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:02:17,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:02:17,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:02:17,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:02:17,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:02:17,010 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:02:17,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:02:17,012 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:02:17,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:02:17,013 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:02:17,013 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:02:17,014 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:02:17,016 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:02:17,017 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:02:17,018 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:02:17,018 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:02:17,019 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 21:02:17,019 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 21:02:17,020 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:02:17,020 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:02:17,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:02:17,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:02:17,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:02:17,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:02:17,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:02:17,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:17,025 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:02:17,025 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:02:17,025 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 21:02:17,026 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 21:02:17,026 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:02:17,026 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:02:17,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:02:17,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:02:17,028 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 21:02:17,028 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dbada8959d2cc8064c4bd91b5eb9026b5ef55506175e9e1c24832dba2bf0e0c [2023-11-21 21:02:17,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:02:17,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:02:17,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:02:17,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:02:17,466 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:02:17,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-21 21:02:20,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:02:21,082 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:02:21,083 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-21 21:02:21,119 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data/741eff449/bec88c02d38b4612ad4f7850feb3c9ec/FLAGd4e8e624f [2023-11-21 21:02:21,132 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/data/741eff449/bec88c02d38b4612ad4f7850feb3c9ec [2023-11-21 21:02:21,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:02:21,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:02:21,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:21,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:02:21,157 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:02:21,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:21" (1/1) ... [2023-11-21 21:02:21,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578228be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:21, skipping insertion in model container [2023-11-21 21:02:21,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:02:21" (1/1) ... [2023-11-21 21:02:21,241 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:02:21,592 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:02:22,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:22,042 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 21:02:22,074 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:02:22,081 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:02:22,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:22,210 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:02:22,244 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 21:02:22,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:02:22,390 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:22,390 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:02:22,398 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:02:22,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22 WrapperNode [2023-11-21 21:02:22,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:02:22,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:02:22,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:02:22,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:02:22,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,523 INFO L138 Inliner]: procedures = 211, calls = 282, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1040 [2023-11-21 21:02:22,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:02:22,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:02:22,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:02:22,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:02:22,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:02:22,666 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:02:22,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:02:22,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:02:22,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (1/1) ... [2023-11-21 21:02:22,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:02:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:22,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:02:22,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:02:22,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 21:02:22,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 21:02:22,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 21:02:22,755 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 21:02:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:02:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 21:02:22,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:02:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 21:02:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:02:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 21:02:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:02:22,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:02:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:02:22,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:02:22,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:02:22,982 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:02:22,985 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:02:22,989 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:02:27,784 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:02:28,014 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:02:28,014 INFO L308 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-21 21:02:28,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:28 BoogieIcfgContainer [2023-11-21 21:02:28,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:02:28,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:02:28,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:02:28,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:02:28,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:02:21" (1/3) ... [2023-11-21 21:02:28,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d15941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:28, skipping insertion in model container [2023-11-21 21:02:28,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:02:22" (2/3) ... [2023-11-21 21:02:28,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77d15941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:02:28, skipping insertion in model container [2023-11-21 21:02:28,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:02:28" (3/3) ... [2023-11-21 21:02:28,026 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test2-2.i [2023-11-21 21:02:28,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:02:28,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2023-11-21 21:02:28,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:02:28,115 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f670fbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:02:28,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2023-11-21 21:02:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 958 states, 425 states have (on average 2.5247058823529414) internal successors, (1073), 953 states have internal predecessors, (1073), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 21:02:28,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:28,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 21:02:28,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:28,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:28,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1655356, now seen corresponding path program 1 times [2023-11-21 21:02:28,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:28,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341720159] [2023-11-21 21:02:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:28,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:28,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:28,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 21:02:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:28,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:28,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:28,406 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 [2023-11-21 21:02:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:28,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:28,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:28,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341720159] [2023-11-21 21:02:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341720159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:28,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:28,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:02:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775836926] [2023-11-21 21:02:28,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:28,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:28,461 INFO L87 Difference]: Start difference. First operand has 958 states, 425 states have (on average 2.5247058823529414) internal successors, (1073), 953 states have internal predecessors, (1073), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:30,857 INFO L93 Difference]: Finished difference Result 1110 states and 1177 transitions. [2023-11-21 21:02:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 21:02:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:30,885 INFO L225 Difference]: With dead ends: 1110 [2023-11-21 21:02:30,890 INFO L226 Difference]: Without dead ends: 1109 [2023-11-21 21:02:30,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:30,897 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 888 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:30,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 632 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 21:02:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2023-11-21 21:02:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 945. [2023-11-21 21:02:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 428 states have (on average 2.3317757009345796) internal successors, (998), 940 states have internal predecessors, (998), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1004 transitions. [2023-11-21 21:02:31,015 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1004 transitions. Word has length 3 [2023-11-21 21:02:31,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:31,015 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1004 transitions. [2023-11-21 21:02:31,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:31,016 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1004 transitions. [2023-11-21 21:02:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 21:02:31,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:31,017 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 21:02:31,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:31,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:31,220 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:31,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1655357, now seen corresponding path program 1 times [2023-11-21 21:02:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:31,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306718091] [2023-11-21 21:02:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:31,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:31,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:31,238 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:31,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 21:02:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:02:31,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:31,369 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 [2023-11-21 21:02:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:31,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:31,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306718091] [2023-11-21 21:02:31,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306718091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:31,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:31,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:02:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370130788] [2023-11-21 21:02:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:31,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:31,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:31,397 INFO L87 Difference]: Start difference. First operand 945 states and 1004 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:35,320 INFO L93 Difference]: Finished difference Result 1311 states and 1402 transitions. [2023-11-21 21:02:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:35,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 21:02:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:35,329 INFO L225 Difference]: With dead ends: 1311 [2023-11-21 21:02:35,330 INFO L226 Difference]: Without dead ends: 1311 [2023-11-21 21:02:35,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:35,334 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 398 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:35,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1207 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-21 21:02:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2023-11-21 21:02:35,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1045. [2023-11-21 21:02:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 529 states have (on average 2.268431001890359) internal successors, (1200), 1040 states have internal predecessors, (1200), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1206 transitions. [2023-11-21 21:02:35,372 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1206 transitions. Word has length 3 [2023-11-21 21:02:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:35,373 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1206 transitions. [2023-11-21 21:02:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1206 transitions. [2023-11-21 21:02:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 21:02:35,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:35,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 21:02:35,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:35,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:35,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr530ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:35,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1656956, now seen corresponding path program 1 times [2023-11-21 21:02:35,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:35,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326812218] [2023-11-21 21:02:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:35,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:35,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:35,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:35,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 21:02:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:02:35,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:35,785 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_57| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_57|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_57| (_ bv0 1))))) is different from true [2023-11-21 21:02:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:35,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:35,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:35,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326812218] [2023-11-21 21:02:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326812218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:35,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:35,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:02:35,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477309269] [2023-11-21 21:02:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:35,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:02:35,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:02:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 21:02:35,791 INFO L87 Difference]: Start difference. First operand 1045 states and 1206 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:38,792 INFO L93 Difference]: Finished difference Result 1298 states and 1387 transitions. [2023-11-21 21:02:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:02:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 21:02:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:38,799 INFO L225 Difference]: With dead ends: 1298 [2023-11-21 21:02:38,800 INFO L226 Difference]: Without dead ends: 1297 [2023-11-21 21:02:38,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 21:02:38,801 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 382 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1377 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:38,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1205 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 789 Invalid, 0 Unknown, 1377 Unchecked, 2.9s Time] [2023-11-21 21:02:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2023-11-21 21:02:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1045. [2023-11-21 21:02:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 529 states have (on average 2.2665406427221173) internal successors, (1199), 1040 states have internal predecessors, (1199), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1205 transitions. [2023-11-21 21:02:38,831 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1205 transitions. Word has length 3 [2023-11-21 21:02:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:38,831 INFO L495 AbstractCegarLoop]: Abstraction has 1045 states and 1205 transitions. [2023-11-21 21:02:38,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1205 transitions. [2023-11-21 21:02:38,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 21:02:38,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:38,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:02:38,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:39,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:39,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:39,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:39,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2070118646, now seen corresponding path program 1 times [2023-11-21 21:02:39,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:39,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559252900] [2023-11-21 21:02:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:39,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:39,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:39,037 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:39,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 21:02:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 21:02:39,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:39,236 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 [2023-11-21 21:02:39,247 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 [2023-11-21 21:02:39,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 21:02:39,361 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 [2023-11-21 21:02:39,388 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 21:02:39,388 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 [2023-11-21 21:02:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:39,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:39,407 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:39,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559252900] [2023-11-21 21:02:39,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559252900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:39,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:39,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:02:39,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491303360] [2023-11-21 21:02:39,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:39,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:02:39,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:39,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:02:39,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:02:39,409 INFO L87 Difference]: Start difference. First operand 1045 states and 1205 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:43,406 INFO L93 Difference]: Finished difference Result 1198 states and 1366 transitions. [2023-11-21 21:02:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:02:43,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-21 21:02:43,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:43,413 INFO L225 Difference]: With dead ends: 1198 [2023-11-21 21:02:43,413 INFO L226 Difference]: Without dead ends: 1198 [2023-11-21 21:02:43,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:02:43,415 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 2009 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:43,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 304 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-21 21:02:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2023-11-21 21:02:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 934. [2023-11-21 21:02:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 428 states have (on average 2.3014018691588785) internal successors, (985), 929 states have internal predecessors, (985), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 991 transitions. [2023-11-21 21:02:43,439 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 991 transitions. Word has length 6 [2023-11-21 21:02:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:43,439 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 991 transitions. [2023-11-21 21:02:43,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 991 transitions. [2023-11-21 21:02:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 21:02:43,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:43,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:43,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:43,644 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:43,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash -250831435, now seen corresponding path program 1 times [2023-11-21 21:02:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:43,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705662771] [2023-11-21 21:02:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:43,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:43,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:43,647 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:43,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:43,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:43,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:43,843 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 [2023-11-21 21:02:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:43,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:43,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:43,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705662771] [2023-11-21 21:02:43,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705662771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:43,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:43,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:02:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162724433] [2023-11-21 21:02:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:43,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:43,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:43,865 INFO L87 Difference]: Start difference. First operand 934 states and 991 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:46,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:46,177 INFO L93 Difference]: Finished difference Result 1073 states and 1151 transitions. [2023-11-21 21:02:46,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:46,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 21:02:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:46,186 INFO L225 Difference]: With dead ends: 1073 [2023-11-21 21:02:46,186 INFO L226 Difference]: Without dead ends: 1073 [2023-11-21 21:02:46,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:46,188 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 716 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:46,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 898 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 21:02:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-11-21 21:02:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 887. [2023-11-21 21:02:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 428 states have (on average 2.191588785046729) internal successors, (938), 882 states have internal predecessors, (938), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 944 transitions. [2023-11-21 21:02:46,213 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 944 transitions. Word has length 7 [2023-11-21 21:02:46,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:46,214 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 944 transitions. [2023-11-21 21:02:46,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 944 transitions. [2023-11-21 21:02:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 21:02:46,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:46,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:46,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:46,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:46,428 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:46,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -250831434, now seen corresponding path program 1 times [2023-11-21 21:02:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:46,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698360042] [2023-11-21 21:02:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:46,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:46,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:46,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:46,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:46,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:02:46,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:46,574 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 [2023-11-21 21:02:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:46,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:46,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:46,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698360042] [2023-11-21 21:02:46,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698360042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:46,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:46,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:02:46,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884058063] [2023-11-21 21:02:46,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:46,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:46,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:46,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:46,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:46,605 INFO L87 Difference]: Start difference. First operand 887 states and 944 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:50,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:50,079 INFO L93 Difference]: Finished difference Result 1131 states and 1212 transitions. [2023-11-21 21:02:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:50,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-21 21:02:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:50,084 INFO L225 Difference]: With dead ends: 1131 [2023-11-21 21:02:50,085 INFO L226 Difference]: Without dead ends: 1131 [2023-11-21 21:02:50,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:50,086 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 435 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:50,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1179 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-21 21:02:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2023-11-21 21:02:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 900. [2023-11-21 21:02:50,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 451 states have (on average 2.1840354767184036) internal successors, (985), 895 states have internal predecessors, (985), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:50,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 991 transitions. [2023-11-21 21:02:50,108 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 991 transitions. Word has length 7 [2023-11-21 21:02:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:50,108 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 991 transitions. [2023-11-21 21:02:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 991 transitions. [2023-11-21 21:02:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 21:02:50,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:50,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:50,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:50,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:50,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:50,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1099772851, now seen corresponding path program 1 times [2023-11-21 21:02:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93865304] [2023-11-21 21:02:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:50,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:50,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:50,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:50,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:50,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:50,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:50,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:50,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:50,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93865304] [2023-11-21 21:02:50,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93865304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:50,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:50,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:02:50,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858249566] [2023-11-21 21:02:50,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:50,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:50,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:50,534 INFO L87 Difference]: Start difference. First operand 900 states and 991 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:51,977 INFO L93 Difference]: Finished difference Result 1314 states and 1440 transitions. [2023-11-21 21:02:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-21 21:02:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:51,985 INFO L225 Difference]: With dead ends: 1314 [2023-11-21 21:02:51,985 INFO L226 Difference]: Without dead ends: 1314 [2023-11-21 21:02:51,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:51,986 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 499 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:51,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1544 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 21:02:51,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2023-11-21 21:02:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1040. [2023-11-21 21:02:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 591 states have (on average 2.104906937394247) internal successors, (1244), 1035 states have internal predecessors, (1244), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1250 transitions. [2023-11-21 21:02:52,015 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1250 transitions. Word has length 11 [2023-11-21 21:02:52,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:52,015 INFO L495 AbstractCegarLoop]: Abstraction has 1040 states and 1250 transitions. [2023-11-21 21:02:52,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:52,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1250 transitions. [2023-11-21 21:02:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 21:02:52,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:52,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:52,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:52,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:52,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr530ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:52,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:52,220 INFO L85 PathProgramCache]: Analyzing trace with hash 319996925, now seen corresponding path program 1 times [2023-11-21 21:02:52,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:52,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356881536] [2023-11-21 21:02:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:52,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:52,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:52,222 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:52,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:52,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:02:52,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:52,571 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_58| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_58|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_58| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-21 21:02:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:52,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:52,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:52,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356881536] [2023-11-21 21:02:52,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356881536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:52,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:52,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:02:52,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424979621] [2023-11-21 21:02:52,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:52,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:02:52,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:02:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 21:02:52,574 INFO L87 Difference]: Start difference. First operand 1040 states and 1250 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:55,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:55,300 INFO L93 Difference]: Finished difference Result 1325 states and 1556 transitions. [2023-11-21 21:02:55,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:02:55,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 21:02:55,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:55,309 INFO L225 Difference]: With dead ends: 1325 [2023-11-21 21:02:55,309 INFO L226 Difference]: Without dead ends: 1324 [2023-11-21 21:02:55,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 21:02:55,310 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 298 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1235 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:55,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1157 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 701 Invalid, 0 Unknown, 1235 Unchecked, 2.7s Time] [2023-11-21 21:02:55,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2023-11-21 21:02:55,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1113. [2023-11-21 21:02:55,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 664 states have (on average 2.0737951807228914) internal successors, (1377), 1108 states have internal predecessors, (1377), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1383 transitions. [2023-11-21 21:02:55,349 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1383 transitions. Word has length 13 [2023-11-21 21:02:55,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:55,350 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1383 transitions. [2023-11-21 21:02:55,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:55,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1383 transitions. [2023-11-21 21:02:55,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 21:02:55,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:55,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:55,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:55,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:55,558 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:55,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -24672753, now seen corresponding path program 1 times [2023-11-21 21:02:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74531900] [2023-11-21 21:02:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:55,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:55,561 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:55,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:55,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:02:55,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:55,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:55,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74531900] [2023-11-21 21:02:55,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74531900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:55,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:55,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:02:55,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006886772] [2023-11-21 21:02:55,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:55,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:55,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:55,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:55,738 INFO L87 Difference]: Start difference. First operand 1113 states and 1383 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:56,747 INFO L93 Difference]: Finished difference Result 1044 states and 1263 transitions. [2023-11-21 21:02:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:56,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 21:02:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:56,753 INFO L225 Difference]: With dead ends: 1044 [2023-11-21 21:02:56,753 INFO L226 Difference]: Without dead ends: 1044 [2023-11-21 21:02:56,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:02:56,754 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 69 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:56,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1487 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 21:02:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2023-11-21 21:02:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 1044. [2023-11-21 21:02:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 619 states have (on average 2.0306946688206784) internal successors, (1257), 1039 states have internal predecessors, (1257), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1263 transitions. [2023-11-21 21:02:56,783 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1263 transitions. Word has length 13 [2023-11-21 21:02:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:56,784 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1263 transitions. [2023-11-21 21:02:56,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1263 transitions. [2023-11-21 21:02:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 21:02:56,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:56,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:56,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:56,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:56,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:56,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1329578469, now seen corresponding path program 1 times [2023-11-21 21:02:56,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259326572] [2023-11-21 21:02:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:56,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:56,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:56,990 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:56,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:57,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 21:02:57,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:57,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:57,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259326572] [2023-11-21 21:02:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259326572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:57,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:02:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844151925] [2023-11-21 21:02:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:57,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:02:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:57,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:02:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:02:57,296 INFO L87 Difference]: Start difference. First operand 1044 states and 1263 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:59,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:59,460 INFO L93 Difference]: Finished difference Result 1296 states and 1454 transitions. [2023-11-21 21:02:59,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:02:59,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-21 21:02:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:59,467 INFO L225 Difference]: With dead ends: 1296 [2023-11-21 21:02:59,467 INFO L226 Difference]: Without dead ends: 1292 [2023-11-21 21:02:59,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:59,468 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 463 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:59,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 2206 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 21:02:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-11-21 21:02:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1042. [2023-11-21 21:02:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 617 states have (on average 2.032414910858995) internal successors, (1254), 1037 states have internal predecessors, (1254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:02:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1260 transitions. [2023-11-21 21:02:59,497 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1260 transitions. Word has length 14 [2023-11-21 21:02:59,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:59,497 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1260 transitions. [2023-11-21 21:02:59,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:02:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1260 transitions. [2023-11-21 21:02:59,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 21:02:59,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:59,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:59,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:59,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:02:59,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:59,702 INFO L85 PathProgramCache]: Analyzing trace with hash -764058755, now seen corresponding path program 1 times [2023-11-21 21:02:59,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:02:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466655548] [2023-11-21 21:02:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:59,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:02:59,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:02:59,703 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:02:59,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:02:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:59,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:59,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:59,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:59,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:02:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466655548] [2023-11-21 21:02:59,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466655548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:59,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:02:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230456209] [2023-11-21 21:02:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:59,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:02:59,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:02:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:02:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:02:59,883 INFO L87 Difference]: Start difference. First operand 1042 states and 1260 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:01,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:01,160 INFO L93 Difference]: Finished difference Result 1028 states and 1197 transitions. [2023-11-21 21:03:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:03:01,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-21 21:03:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:01,166 INFO L225 Difference]: With dead ends: 1028 [2023-11-21 21:03:01,166 INFO L226 Difference]: Without dead ends: 1028 [2023-11-21 21:03:01,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:01,168 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 58 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:01,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2187 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 21:03:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-11-21 21:03:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1025. [2023-11-21 21:03:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 614 states have (on average 1.9348534201954397) internal successors, (1188), 1020 states have internal predecessors, (1188), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:03:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1194 transitions. [2023-11-21 21:03:01,194 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1194 transitions. Word has length 14 [2023-11-21 21:03:01,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:01,195 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1194 transitions. [2023-11-21 21:03:01,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:01,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1194 transitions. [2023-11-21 21:03:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 21:03:01,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:01,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:01,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:01,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:03:01,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:03:01,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash -973410932, now seen corresponding path program 1 times [2023-11-21 21:03:01,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:01,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065988164] [2023-11-21 21:03:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:01,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:03:01,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:01,405 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:03:01,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:03:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:01,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:03:01,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:01,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:01,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065988164] [2023-11-21 21:03:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065988164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:01,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:03:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088547798] [2023-11-21 21:03:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:01,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:01,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:01,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:01,645 INFO L87 Difference]: Start difference. First operand 1025 states and 1194 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:02,520 INFO L93 Difference]: Finished difference Result 971 states and 1114 transitions. [2023-11-21 21:03:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 21:03:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:02,526 INFO L225 Difference]: With dead ends: 971 [2023-11-21 21:03:02,526 INFO L226 Difference]: Without dead ends: 971 [2023-11-21 21:03:02,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:02,527 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 69 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:02,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1371 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 21:03:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-11-21 21:03:02,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 971. [2023-11-21 21:03:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 584 states have (on average 1.8972602739726028) internal successors, (1108), 966 states have internal predecessors, (1108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:03:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1114 transitions. [2023-11-21 21:03:02,550 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1114 transitions. Word has length 15 [2023-11-21 21:03:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:02,550 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1114 transitions. [2023-11-21 21:03:02,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1114 transitions. [2023-11-21 21:03:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 21:03:02,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:02,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:02,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:03:02,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:03:02,755 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:03:02,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:02,756 INFO L85 PathProgramCache]: Analyzing trace with hash -109310116, now seen corresponding path program 1 times [2023-11-21 21:03:02,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:02,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768752479] [2023-11-21 21:03:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:02,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:03:02,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:02,757 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:03:02,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:03:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:02,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:03:02,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:02,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:02,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768752479] [2023-11-21 21:03:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768752479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:02,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:02,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:03:02,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628969030] [2023-11-21 21:03:02,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:02,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:03:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:03:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:03:02,997 INFO L87 Difference]: Start difference. First operand 971 states and 1114 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:04,169 INFO L93 Difference]: Finished difference Result 957 states and 1072 transitions. [2023-11-21 21:03:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:03:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-21 21:03:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:04,174 INFO L225 Difference]: With dead ends: 957 [2023-11-21 21:03:04,174 INFO L226 Difference]: Without dead ends: 957 [2023-11-21 21:03:04,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:04,175 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 58 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:04,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2013 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 21:03:04,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2023-11-21 21:03:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 955. [2023-11-21 21:03:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 582 states have (on average 1.8281786941580755) internal successors, (1064), 950 states have internal predecessors, (1064), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 21:03:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1070 transitions. [2023-11-21 21:03:04,196 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1070 transitions. Word has length 16 [2023-11-21 21:03:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:04,196 INFO L495 AbstractCegarLoop]: Abstraction has 955 states and 1070 transitions. [2023-11-21 21:03:04,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:03:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1070 transitions. [2023-11-21 21:03:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-21 21:03:04,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:04,198 INFO L195 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] [2023-11-21 21:03:04,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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)] Ended with exit code 0 [2023-11-21 21:03:04,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:03:04,405 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr378REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-21 21:03:04,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash -592065045, now seen corresponding path program 1 times [2023-11-21 21:03:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:03:04,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694392732] [2023-11-21 21:03:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:04,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:03:04,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:03:04,408 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:03:04,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75e591fa-d1a7-4d8f-bda2-477ba1040a13/bin/uautomizer-verify-bycVGegfSx/mathsat -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 [2023-11-21 21:03:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:04,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:03:04,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:04,581 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 [2023-11-21 21:03:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:04,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:04,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:03:04,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694392732] [2023-11-21 21:03:04,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694392732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:04,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:04,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:03:04,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791317660] [2023-11-21 21:03:04,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:04,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:03:04,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:03:04,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:03:04,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:03:04,676 INFO L87 Difference]: Start difference. First operand 955 states and 1070 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)