./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.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_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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_e90dd501-c548-40c8-8bad-3eb904288f7f/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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:13:38,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:13:38,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:13:38,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:13:38,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:13:38,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:13:38,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:13:38,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:13:38,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:13:38,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:13:38,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:13:38,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:13:38,750 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:13:38,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:13:38,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:13:38,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:13:38,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:13:38,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:13:38,754 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:13:38,755 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:13:38,755 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:13:38,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:13:38,756 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:13:38,757 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:13:38,757 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:13:38,758 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:13:38,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:13:38,759 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:13:38,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:13:38,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:13:38,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:38,761 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:13:38,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:13:38,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:13:38,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:13:38,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:13:38,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:13:38,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:13:38,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:13:38,765 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_e90dd501-c548-40c8-8bad-3eb904288f7f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2023-11-21 22:13:38,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:13:39,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:13:39,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:13:39,025 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:13:39,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:13:39,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2023-11-21 22:13:42,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:42,543 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:42,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2023-11-21 22:13:42,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data/e08de96b7/f663d77be1c246939fb7750b368588f3/FLAG6c583cd6d [2023-11-21 22:13:42,587 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data/e08de96b7/f663d77be1c246939fb7750b368588f3 [2023-11-21 22:13:42,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:42,596 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:42,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:42,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:42,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:42,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:42" (1/1) ... [2023-11-21 22:13:42,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc6d050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:42, skipping insertion in model container [2023-11-21 22:13:42,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:42" (1/1) ... [2023-11-21 22:13:42,692 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:43,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:43,197 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 22:13:43,198 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e92e5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:43, skipping insertion in model container [2023-11-21 22:13:43,199 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:43,199 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:13:43,201 INFO L158 Benchmark]: Toolchain (without parser) took 604.80ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 60.0MB in the end (delta: 17.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:13:43,203 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:13:43,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 599.91ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 60.0MB in the end (delta: 17.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:13:43,206 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 599.91ms. Allocated memory is still 115.3MB. Free memory was 77.1MB in the beginning and 60.0MB in the end (delta: 17.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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_e90dd501-c548-40c8-8bad-3eb904288f7f/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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:13:45,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:13:45,953 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:13:45,963 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:13:45,963 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:13:46,010 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:13:46,011 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:13:46,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:13:46,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:13:46,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:13:46,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:13:46,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:13:46,020 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:13:46,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:13:46,022 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:13:46,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:13:46,023 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:13:46,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:13:46,024 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:13:46,025 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:13:46,026 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:13:46,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:13:46,027 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:13:46,027 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:13:46,027 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:13:46,028 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:13:46,028 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:13:46,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:13:46,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:13:46,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:13:46,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:13:46,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:13:46,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:46,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:13:46,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:13:46,033 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:13:46,034 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:13:46,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:13:46,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:13:46,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:13:46,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:13:46,036 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:13:46,036 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_e90dd501-c548-40c8-8bad-3eb904288f7f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2023-11-21 22:13:46,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:13:46,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:13:46,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:13:46,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:13:46,502 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:13:46,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2023-11-21 22:13:49,627 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:13:50,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:13:50,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2023-11-21 22:13:50,052 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data/b43016b82/0715757ffdb745e3b452cace761f4a0d/FLAGf75f9017e [2023-11-21 22:13:50,071 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/data/b43016b82/0715757ffdb745e3b452cace761f4a0d [2023-11-21 22:13:50,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:13:50,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:13:50,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:50,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:13:50,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:13:50,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:50,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55498074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50, skipping insertion in model container [2023-11-21 22:13:50,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:50,184 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:50,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:50,680 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:13:50,708 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:13:50,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:50,845 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:13:50,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:13:50,965 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:13:50,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50 WrapperNode [2023-11-21 22:13:50,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:13:50,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:50,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:13:50,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:13:50,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,081 INFO L138 Inliner]: procedures = 180, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 634 [2023-11-21 22:13:51,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:13:51,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:13:51,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:13:51,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:13:51,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,105 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,186 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:13:51,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:13:51,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:13:51,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:13:51,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (1/1) ... [2023-11-21 22:13:51,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:13:51,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:13:51,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:13:51,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:13:51,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 22:13:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:13:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:13:51,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:13:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:13:51,313 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:13:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:13:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:13:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:13:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:13:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:13:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:13:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:13:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:13:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:13:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:13:51,506 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:13:51,509 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:13:51,514 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 22:13:55,139 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:13:55,384 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:13:55,385 INFO L308 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-21 22:13:55,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:55 BoogieIcfgContainer [2023-11-21 22:13:55,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:13:55,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:13:55,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:13:55,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:13:55,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:13:50" (1/3) ... [2023-11-21 22:13:55,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b6fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:55, skipping insertion in model container [2023-11-21 22:13:55,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:13:50" (2/3) ... [2023-11-21 22:13:55,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b6fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:13:55, skipping insertion in model container [2023-11-21 22:13:55,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:13:55" (3/3) ... [2023-11-21 22:13:55,402 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2023-11-21 22:13:55,425 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:13:55,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-21 22:13:55,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:13:55,512 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;@314d6647, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:13:55,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-21 22:13:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 602 states, 259 states have (on average 2.525096525096525) internal successors, (654), 596 states have internal predecessors, (654), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:13:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 22:13:55,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:55,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 22:13:55,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:13:55,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1108029, now seen corresponding path program 1 times [2023-11-21 22:13:55,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:55,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074112816] [2023-11-21 22:13:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:55,560 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 22:13:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:55,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:13:55,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:13:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:55,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:13:55,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:55,802 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 22:13:55,844 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 22:13:55,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:55,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:55,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074112816] [2023-11-21 22:13:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074112816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:55,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:55,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245299999] [2023-11-21 22:13:55,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:55,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:55,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:55,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:55,893 INFO L87 Difference]: Start difference. First operand has 602 states, 259 states have (on average 2.525096525096525) internal successors, (654), 596 states have internal predecessors, (654), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:57,544 INFO L93 Difference]: Finished difference Result 552 states and 599 transitions. [2023-11-21 22:13:57,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:57,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 22:13:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:57,565 INFO L225 Difference]: With dead ends: 552 [2023-11-21 22:13:57,565 INFO L226 Difference]: Without dead ends: 551 [2023-11-21 22:13:57,567 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 22:13:57,571 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 533 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:57,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 275 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 22:13:57,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-21 22:13:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 542. [2023-11-21 22:13:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 254 states have (on average 2.2125984251968505) internal successors, (562), 536 states have internal predecessors, (562), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:13:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 588 transitions. [2023-11-21 22:13:57,645 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 588 transitions. Word has length 3 [2023-11-21 22:13:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:57,645 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 588 transitions. [2023-11-21 22:13:57,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 588 transitions. [2023-11-21 22:13:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-21 22:13:57,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:57,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-21 22:13:57,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:13:57,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:13:57,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:13:57,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:13:57,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1108030, now seen corresponding path program 1 times [2023-11-21 22:13:57,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:13:57,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653756449] [2023-11-21 22:13:57,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:13:57,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:13:57,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:13:57,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:13:57,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:13:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:13:57,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:13:57,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:13:57,954 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 22:13:57,969 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 22:13:57,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:13:57,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:13:57,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653756449] [2023-11-21 22:13:57,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653756449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:13:57,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:13:57,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:13:57,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359172074] [2023-11-21 22:13:57,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:13:57,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:13:57,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:13:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:13:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:13:57,973 INFO L87 Difference]: Start difference. First operand 542 states and 588 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:59,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:13:59,901 INFO L93 Difference]: Finished difference Result 601 states and 651 transitions. [2023-11-21 22:13:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:13:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-21 22:13:59,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:13:59,908 INFO L225 Difference]: With dead ends: 601 [2023-11-21 22:13:59,908 INFO L226 Difference]: Without dead ends: 601 [2023-11-21 22:13:59,908 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 22:13:59,910 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 228 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:13:59,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 595 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 22:13:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-21 22:13:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 555. [2023-11-21 22:13:59,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 277 states have (on average 2.1985559566787005) internal successors, (609), 549 states have internal predecessors, (609), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:13:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 635 transitions. [2023-11-21 22:13:59,942 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 635 transitions. Word has length 3 [2023-11-21 22:13:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:13:59,942 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 635 transitions. [2023-11-21 22:13:59,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:13:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 635 transitions. [2023-11-21 22:13:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-21 22:13:59,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:13:59,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-21 22:13:59,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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)] Ended with exit code 0 [2023-11-21 22:14:00,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:00,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr328ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:00,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash 34389643, now seen corresponding path program 1 times [2023-11-21 22:14:00,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:00,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685467158] [2023-11-21 22:14:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:00,148 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 22:14:00,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:00,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:00,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:00,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:14:00,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:00,255 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 22:14:00,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:00,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685467158] [2023-11-21 22:14:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685467158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:00,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:00,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227117340] [2023-11-21 22:14:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:00,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:00,259 INFO L87 Difference]: Start difference. First operand 555 states and 635 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 22:14:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:01,268 INFO L93 Difference]: Finished difference Result 1068 states and 1208 transitions. [2023-11-21 22:14:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:01,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-21 22:14:01,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:01,276 INFO L225 Difference]: With dead ends: 1068 [2023-11-21 22:14:01,277 INFO L226 Difference]: Without dead ends: 1068 [2023-11-21 22:14:01,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 22:14:01,278 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 509 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:01,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1187 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:14:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2023-11-21 22:14:01,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 556. [2023-11-21 22:14:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 278 states have (on average 2.194244604316547) internal successors, (610), 550 states have internal predecessors, (610), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 636 transitions. [2023-11-21 22:14:01,308 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 636 transitions. Word has length 4 [2023-11-21 22:14:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:01,309 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 636 transitions. [2023-11-21 22:14:01,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 22:14:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 636 transitions. [2023-11-21 22:14:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:14:01,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:01,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:01,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:01,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:01,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:01,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -214635929, now seen corresponding path program 1 times [2023-11-21 22:14:01,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:01,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797398150] [2023-11-21 22:14:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:01,514 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 22:14:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:01,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:01,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:01,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:14:01,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:01,657 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 22:14:01,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:01,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:01,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797398150] [2023-11-21 22:14:01,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797398150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:01,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:01,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:14:01,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515484479] [2023-11-21 22:14:01,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:01,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:01,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:01,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:01,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:01,659 INFO L87 Difference]: Start difference. First operand 556 states and 636 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:14:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:02,322 INFO L93 Difference]: Finished difference Result 517 states and 596 transitions. [2023-11-21 22:14:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-21 22:14:02,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:02,328 INFO L225 Difference]: With dead ends: 517 [2023-11-21 22:14:02,328 INFO L226 Difference]: Without dead ends: 517 [2023-11-21 22:14:02,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 22:14:02,330 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 69 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:02,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 873 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:14:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-11-21 22:14:02,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2023-11-21 22:14:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 263 states have (on average 2.167300380228137) internal successors, (570), 511 states have internal predecessors, (570), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 596 transitions. [2023-11-21 22:14:02,350 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 596 transitions. Word has length 9 [2023-11-21 22:14:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:02,351 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 596 transitions. [2023-11-21 22:14:02,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:14:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 596 transitions. [2023-11-21 22:14:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:14:02,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:02,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:02,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:02,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:02,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:02,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1937249020, now seen corresponding path program 1 times [2023-11-21 22:14:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:02,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291020490] [2023-11-21 22:14:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:02,557 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 22:14:02,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:02,559 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:02,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:02,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:02,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:02,769 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 22:14:02,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:02,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291020490] [2023-11-21 22:14:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291020490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:02,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:02,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201872325] [2023-11-21 22:14:02,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:02,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:02,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:02,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:02,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:02,772 INFO L87 Difference]: Start difference. First operand 517 states and 596 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:14:03,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:03,613 INFO L93 Difference]: Finished difference Result 503 states and 575 transitions. [2023-11-21 22:14:03,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:03,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2023-11-21 22:14:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:03,618 INFO L225 Difference]: With dead ends: 503 [2023-11-21 22:14:03,618 INFO L226 Difference]: Without dead ends: 503 [2023-11-21 22:14:03,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 22:14:03,620 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 58 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:03,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1266 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:14:03,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-21 22:14:03,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 502. [2023-11-21 22:14:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 262 states have (on average 2.0916030534351147) internal successors, (548), 496 states have internal predecessors, (548), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:03,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 574 transitions. [2023-11-21 22:14:03,637 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 574 transitions. Word has length 10 [2023-11-21 22:14:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:03,638 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 574 transitions. [2023-11-21 22:14:03,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:14:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 574 transitions. [2023-11-21 22:14:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 22:14:03,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:03,639 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] [2023-11-21 22:14:03,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:03,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:03,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:03,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1318126474, now seen corresponding path program 1 times [2023-11-21 22:14:03,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:03,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882312606] [2023-11-21 22:14:03,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:03,844 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 22:14:03,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:03,845 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:03,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:03,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:14:03,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:03,994 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 22:14:04,119 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 22:14:04,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:04,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882312606] [2023-11-21 22:14:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882312606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:04,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:04,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:14:04,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726402152] [2023-11-21 22:14:04,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:04,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:04,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:04,125 INFO L87 Difference]: Start difference. First operand 502 states and 574 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 22:14:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:05,875 INFO L93 Difference]: Finished difference Result 507 states and 580 transitions. [2023-11-21 22:14:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:05,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-11-21 22:14:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:05,879 INFO L225 Difference]: With dead ends: 507 [2023-11-21 22:14:05,879 INFO L226 Difference]: Without dead ends: 507 [2023-11-21 22:14:05,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 22:14:05,881 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 468 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:05,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 406 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-21 22:14:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2023-11-21 22:14:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 498. [2023-11-21 22:14:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 262 states have (on average 2.0763358778625953) internal successors, (544), 492 states have internal predecessors, (544), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:05,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 570 transitions. [2023-11-21 22:14:05,897 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 570 transitions. Word has length 24 [2023-11-21 22:14:05,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:05,897 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 570 transitions. [2023-11-21 22:14:05,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 22:14:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 570 transitions. [2023-11-21 22:14:05,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 22:14:05,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:05,899 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] [2023-11-21 22:14:05,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:06,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:06,102 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:06,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1318126475, now seen corresponding path program 1 times [2023-11-21 22:14:06,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:06,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032862914] [2023-11-21 22:14:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:06,103 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 22:14:06,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:06,105 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:06,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:06,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:14:06,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:06,267 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 22:14:06,513 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 22:14:06,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:06,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:06,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032862914] [2023-11-21 22:14:06,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032862914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:06,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:06,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:14:06,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994707003] [2023-11-21 22:14:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:06,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:06,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:06,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:06,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:06,531 INFO L87 Difference]: Start difference. First operand 498 states and 570 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 22:14:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:08,785 INFO L93 Difference]: Finished difference Result 540 states and 582 transitions. [2023-11-21 22:14:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:08,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-11-21 22:14:08,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:08,791 INFO L225 Difference]: With dead ends: 540 [2023-11-21 22:14:08,791 INFO L226 Difference]: Without dead ends: 540 [2023-11-21 22:14:08,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 22:14:08,792 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 165 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:08,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 757 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-21 22:14:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2023-11-21 22:14:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 494. [2023-11-21 22:14:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 262 states have (on average 2.0610687022900764) internal successors, (540), 488 states have internal predecessors, (540), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 566 transitions. [2023-11-21 22:14:08,809 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 566 transitions. Word has length 24 [2023-11-21 22:14:08,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:08,811 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 566 transitions. [2023-11-21 22:14:08,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 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 22:14:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 566 transitions. [2023-11-21 22:14:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 22:14:08,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:08,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:08,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:09,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:09,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:09,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:09,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1837071356, now seen corresponding path program 1 times [2023-11-21 22:14:09,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:09,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440350377] [2023-11-21 22:14:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:09,019 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 22:14:09,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:09,020 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:09,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:09,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:09,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:09,299 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 22:14:09,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:09,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:09,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440350377] [2023-11-21 22:14:09,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440350377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:09,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501627471] [2023-11-21 22:14:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:09,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:09,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:09,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:09,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:09,303 INFO L87 Difference]: Start difference. First operand 494 states and 566 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 22:14:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:10,093 INFO L93 Difference]: Finished difference Result 488 states and 556 transitions. [2023-11-21 22:14:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:10,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2023-11-21 22:14:10,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:10,098 INFO L225 Difference]: With dead ends: 488 [2023-11-21 22:14:10,098 INFO L226 Difference]: Without dead ends: 488 [2023-11-21 22:14:10,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 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 22:14:10,099 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 23 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:10,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1252 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:14:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-21 22:14:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2023-11-21 22:14:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 256 states have (on average 2.0703125) internal successors, (530), 482 states have internal predecessors, (530), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 556 transitions. [2023-11-21 22:14:10,114 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 556 transitions. Word has length 40 [2023-11-21 22:14:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:10,114 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 556 transitions. [2023-11-21 22:14:10,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 22:14:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 556 transitions. [2023-11-21 22:14:10,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 22:14:10,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:10,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:10,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:10,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:10,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:10,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:10,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1198430363, now seen corresponding path program 1 times [2023-11-21 22:14:10,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:10,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78269862] [2023-11-21 22:14:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:10,323 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 22:14:10,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:10,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:10,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:10,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:10,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:10,898 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 22:14:10,898 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:10,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:10,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78269862] [2023-11-21 22:14:10,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [78269862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:10,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:10,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263870486] [2023-11-21 22:14:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:10,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:10,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:10,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:10,900 INFO L87 Difference]: Start difference. First operand 488 states and 556 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 22:14:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:11,610 INFO L93 Difference]: Finished difference Result 529 states and 597 transitions. [2023-11-21 22:14:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2023-11-21 22:14:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:11,615 INFO L225 Difference]: With dead ends: 529 [2023-11-21 22:14:11,615 INFO L226 Difference]: Without dead ends: 529 [2023-11-21 22:14:11,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 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 22:14:11,616 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 59 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:11,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 796 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:14:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-11-21 22:14:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2023-11-21 22:14:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 297 states have (on average 1.9225589225589226) internal successors, (571), 523 states have internal predecessors, (571), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 597 transitions. [2023-11-21 22:14:11,632 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 597 transitions. Word has length 44 [2023-11-21 22:14:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:11,632 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 597 transitions. [2023-11-21 22:14:11,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 22:14:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 597 transitions. [2023-11-21 22:14:11,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 22:14:11,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:11,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:11,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:11,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:11,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:11,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1516705745, now seen corresponding path program 1 times [2023-11-21 22:14:11,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:11,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245125561] [2023-11-21 22:14:11,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:11,842 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 22:14:11,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:11,844 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:11,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:12,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:14:12,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:12,186 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 22:14:12,198 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 22:14:12,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:14:12,818 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 22:14:12,836 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:14:12,836 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 22:14:12,865 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 22:14:12,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:12,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:12,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245125561] [2023-11-21 22:14:12,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245125561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:12,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:12,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:14:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242811659] [2023-11-21 22:14:12,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:12,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:12,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:12,869 INFO L87 Difference]: Start difference. First operand 529 states and 597 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 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 22:14:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:14,372 INFO L93 Difference]: Finished difference Result 500 states and 569 transitions. [2023-11-21 22:14:14,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:14,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2023-11-21 22:14:14,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:14,378 INFO L225 Difference]: With dead ends: 500 [2023-11-21 22:14:14,378 INFO L226 Difference]: Without dead ends: 500 [2023-11-21 22:14:14,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 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 22:14:14,379 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 691 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:14,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 191 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-21 22:14:14,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-21 22:14:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 468. [2023-11-21 22:14:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 274 states have (on average 1.7372262773722629) internal successors, (476), 462 states have internal predecessors, (476), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 502 transitions. [2023-11-21 22:14:14,392 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 502 transitions. Word has length 47 [2023-11-21 22:14:14,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:14,392 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 502 transitions. [2023-11-21 22:14:14,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 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 22:14:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 502 transitions. [2023-11-21 22:14:14,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 22:14:14,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:14,394 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, 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 22:14:14,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:14,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:14,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:14,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1278085904, now seen corresponding path program 1 times [2023-11-21 22:14:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616424803] [2023-11-21 22:14:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:14,601 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 22:14:14,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:14,603 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:14,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:14,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:14:14,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:14,894 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 22:14:14,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-21 22:14:14,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-21 22:14:14,955 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 22:14:14,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:14,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616424803] [2023-11-21 22:14:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616424803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060759727] [2023-11-21 22:14:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:14,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:14:14,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:14,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:14:14,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:14:14,959 INFO L87 Difference]: Start difference. First operand 468 states and 502 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 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 22:14:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:17,162 INFO L93 Difference]: Finished difference Result 467 states and 501 transitions. [2023-11-21 22:14:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:14:17,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 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 51 [2023-11-21 22:14:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:17,168 INFO L225 Difference]: With dead ends: 467 [2023-11-21 22:14:17,168 INFO L226 Difference]: Without dead ends: 467 [2023-11-21 22:14:17,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:14:17,169 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 3 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:17,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1035 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-21 22:14:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-21 22:14:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2023-11-21 22:14:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 274 states have (on average 1.7335766423357664) internal successors, (475), 461 states have internal predecessors, (475), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:17,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 501 transitions. [2023-11-21 22:14:17,186 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 501 transitions. Word has length 51 [2023-11-21 22:14:17,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:17,186 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 501 transitions. [2023-11-21 22:14:17,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 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 22:14:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 501 transitions. [2023-11-21 22:14:17,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 22:14:17,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:17,190 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, 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 22:14:17,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:17,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:17,395 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:17,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1278085905, now seen corresponding path program 1 times [2023-11-21 22:14:17,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:17,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802467395] [2023-11-21 22:14:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:17,396 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 22:14:17,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:17,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:17,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:17,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:14:17,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:17,654 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 22:14:17,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-21 22:14:17,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-21 22:14:17,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-21 22:14:17,764 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 22:14:17,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:17,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802467395] [2023-11-21 22:14:17,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802467395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:17,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:17,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041842924] [2023-11-21 22:14:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:14:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:17,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:14:17,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:14:17,767 INFO L87 Difference]: Start difference. First operand 467 states and 501 transitions. Second operand has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 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 22:14:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:20,383 INFO L93 Difference]: Finished difference Result 466 states and 500 transitions. [2023-11-21 22:14:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:14:20,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 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 51 [2023-11-21 22:14:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:20,387 INFO L225 Difference]: With dead ends: 466 [2023-11-21 22:14:20,387 INFO L226 Difference]: Without dead ends: 466 [2023-11-21 22:14:20,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:14:20,388 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:20,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1045 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-21 22:14:20,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-21 22:14:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-11-21 22:14:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 273 states have (on average 1.7362637362637363) internal successors, (474), 460 states have internal predecessors, (474), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:14:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 500 transitions. [2023-11-21 22:14:20,400 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 500 transitions. Word has length 51 [2023-11-21 22:14:20,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:20,401 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 500 transitions. [2023-11-21 22:14:20,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 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 22:14:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 500 transitions. [2023-11-21 22:14:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 22:14:20,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:20,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:20,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:20,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:20,607 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:20,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 747501622, now seen corresponding path program 1 times [2023-11-21 22:14:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:20,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443942732] [2023-11-21 22:14:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:20,608 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 22:14:20,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:20,609 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:20,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:20,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:14:20,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:20,880 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 22:14:20,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:14:20,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:20,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443942732] [2023-11-21 22:14:20,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443942732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:20,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:20,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324653910] [2023-11-21 22:14:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:20,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:20,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:20,884 INFO L87 Difference]: Start difference. First operand 466 states and 500 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:14:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:21,640 INFO L93 Difference]: Finished difference Result 468 states and 503 transitions. [2023-11-21 22:14:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:21,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-11-21 22:14:21,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:21,650 INFO L225 Difference]: With dead ends: 468 [2023-11-21 22:14:21,651 INFO L226 Difference]: Without dead ends: 468 [2023-11-21 22:14:21,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 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 22:14:21,652 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:21,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1185 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:14:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-11-21 22:14:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2023-11-21 22:14:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 274 states have (on average 1.7372262773722629) internal successors, (476), 462 states have internal predecessors, (476), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-21 22:14:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 503 transitions. [2023-11-21 22:14:21,674 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 503 transitions. Word has length 57 [2023-11-21 22:14:21,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:21,674 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 503 transitions. [2023-11-21 22:14:21,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:14:21,675 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 503 transitions. [2023-11-21 22:14:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-21 22:14:21,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:21,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:21,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:21,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:21,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1919230679, now seen corresponding path program 1 times [2023-11-21 22:14:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:21,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252255203] [2023-11-21 22:14:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:21,884 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 22:14:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:21,886 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:21,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:22,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:14:22,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:22,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:14:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:22,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:22,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252255203] [2023-11-21 22:14:22,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252255203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:14:22,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:14:22,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-21 22:14:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222759966] [2023-11-21 22:14:22,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:14:22,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:14:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:22,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:14:22,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:14:22,287 INFO L87 Difference]: Start difference. First operand 468 states and 503 transitions. Second operand has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:14:23,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:23,309 INFO L93 Difference]: Finished difference Result 477 states and 517 transitions. [2023-11-21 22:14:23,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:14:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2023-11-21 22:14:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:23,314 INFO L225 Difference]: With dead ends: 477 [2023-11-21 22:14:23,314 INFO L226 Difference]: Without dead ends: 477 [2023-11-21 22:14:23,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:14:23,315 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 6 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:23,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1183 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:14:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-21 22:14:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 476. [2023-11-21 22:14:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 281 states have (on average 1.7402135231316727) internal successors, (489), 469 states have internal predecessors, (489), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-21 22:14:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 516 transitions. [2023-11-21 22:14:23,330 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 516 transitions. Word has length 58 [2023-11-21 22:14:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:23,330 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 516 transitions. [2023-11-21 22:14:23,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 8 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:14:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 516 transitions. [2023-11-21 22:14:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 22:14:23,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:23,332 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:23,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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)] Ended with exit code 0 [2023-11-21 22:14:23,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:23,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:23,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2119440502, now seen corresponding path program 2 times [2023-11-21 22:14:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591827331] [2023-11-21 22:14:23,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:14:23,538 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 22:14:23,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:23,539 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:23,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 (16)] Waiting until timeout for monitored process [2023-11-21 22:14:24,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:14:24,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:14:24,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:14:24,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:24,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:14:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:24,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591827331] [2023-11-21 22:14:24,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591827331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:14:24,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:14:24,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-21 22:14:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630932186] [2023-11-21 22:14:24,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:14:24,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:14:24,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:14:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:14:24,322 INFO L87 Difference]: Start difference. First operand 476 states and 516 transitions. Second operand has 14 states, 12 states have (on average 5.416666666666667) internal successors, (65), 14 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:14:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:26,882 INFO L93 Difference]: Finished difference Result 491 states and 538 transitions. [2023-11-21 22:14:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-21 22:14:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.416666666666667) internal successors, (65), 14 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2023-11-21 22:14:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:26,886 INFO L225 Difference]: With dead ends: 491 [2023-11-21 22:14:26,886 INFO L226 Difference]: Without dead ends: 489 [2023-11-21 22:14:26,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-21 22:14:26,888 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 12 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:26,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3151 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-21 22:14:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2023-11-21 22:14:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 485. [2023-11-21 22:14:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 290 states have (on average 1.7275862068965517) internal successors, (501), 478 states have internal predecessors, (501), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-21 22:14:26,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 528 transitions. [2023-11-21 22:14:26,903 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 528 transitions. Word has length 61 [2023-11-21 22:14:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:26,903 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 528 transitions. [2023-11-21 22:14:26,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.416666666666667) internal successors, (65), 14 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:14:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 528 transitions. [2023-11-21 22:14:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-21 22:14:26,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:26,905 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:26,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:14:27,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:27,112 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:27,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1181699286, now seen corresponding path program 3 times [2023-11-21 22:14:27,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:27,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739007361] [2023-11-21 22:14:27,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:14:27,113 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 22:14:27,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:27,115 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:27,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 (17)] Waiting until timeout for monitored process [2023-11-21 22:14:27,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-21 22:14:27,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:14:27,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:14:27,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:28,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:14:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:28,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:14:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739007361] [2023-11-21 22:14:28,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739007361] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:14:28,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:14:28,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-21 22:14:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120158837] [2023-11-21 22:14:28,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:14:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:14:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:14:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:14:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:14:28,844 INFO L87 Difference]: Start difference. First operand 485 states and 528 transitions. Second operand has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 26 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:14:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:14:35,162 INFO L93 Difference]: Finished difference Result 515 states and 578 transitions. [2023-11-21 22:14:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-21 22:14:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 26 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-11-21 22:14:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:14:35,166 INFO L225 Difference]: With dead ends: 515 [2023-11-21 22:14:35,166 INFO L226 Difference]: Without dead ends: 512 [2023-11-21 22:14:35,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-21 22:14:35,168 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 24 mSDsluCounter, 5103 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5497 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:14:35,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5497 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-21 22:14:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-21 22:14:35,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 503. [2023-11-21 22:14:35,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 308 states have (on average 1.7012987012987013) internal successors, (524), 496 states have internal predecessors, (524), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-21 22:14:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 551 transitions. [2023-11-21 22:14:35,184 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 551 transitions. Word has length 67 [2023-11-21 22:14:35,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:14:35,184 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 551 transitions. [2023-11-21 22:14:35,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 26 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:14:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 551 transitions. [2023-11-21 22:14:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-21 22:14:35,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:14:35,186 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:35,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 (17)] Ended with exit code 0 [2023-11-21 22:14:35,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:35,393 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-21 22:14:35,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:35,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1857641878, now seen corresponding path program 4 times [2023-11-21 22:14:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:14:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819161465] [2023-11-21 22:14:35,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 22:14:35,394 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 22:14:35,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:14:35,395 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 22:14:35,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e90dd501-c548-40c8-8bad-3eb904288f7f/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 (18)] Waiting until timeout for monitored process [2023-11-21 22:14:35,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 22:14:35,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:14:35,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 22:14:35,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:14:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:36,370 INFO L327 TraceCheckSpWp]: Computing backward predicates...