./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya --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 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:45:58,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:45:58,756 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 06:45:58,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:45:58,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:45:58,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:45:58,782 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:45:58,783 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:45:58,783 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:45:58,784 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:45:58,785 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:45:58,785 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:45:58,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:45:58,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:45:58,787 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:45:58,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:45:58,788 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:45:58,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:45:58,789 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:45:58,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:45:58,789 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:45:58,791 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:45:58,791 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:45:58,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:45:58,792 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:45:58,792 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:45:58,793 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:45:58,793 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:45:58,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:45:58,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:45:58,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:45:58,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:45:58,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:45:58,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:45:58,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:45:58,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:45:58,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:45:58,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:45:58,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:45:58,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:45:58,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:45:58,796 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_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f [2023-11-29 06:45:59,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:45:59,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:45:59,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:45:59,051 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:45:59,051 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:45:59,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2023-11-29 06:46:01,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:46:02,043 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:46:02,043 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2023-11-29 06:46:02,063 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data/eec41b86f/1d7548c2bf084037b06d7a9da15f186e/FLAGfdfa41b61 [2023-11-29 06:46:02,079 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data/eec41b86f/1d7548c2bf084037b06d7a9da15f186e [2023-11-29 06:46:02,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:46:02,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:46:02,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:02,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:46:02,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:46:02,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:02" (1/1) ... [2023-11-29 06:46:02,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3737c6ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:02, skipping insertion in model container [2023-11-29 06:46:02,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:02" (1/1) ... [2023-11-29 06:46:02,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:46:02,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:02,810 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) [2023-11-29 06:46:02,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55b81f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:02, skipping insertion in model container [2023-11-29 06:46:02,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:02,811 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 06:46:02,813 INFO L158 Benchmark]: Toolchain (without parser) took 729.09ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 86.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 06:46:02,814 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:46:02,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 727.00ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 86.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 06:46:02,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 727.00ms. Allocated memory is still 151.0MB. Free memory was 108.4MB in the beginning and 86.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya --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 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:46:04,489 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:46:04,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 06:46:04,571 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:46:04,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:46:04,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:46:04,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:46:04,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:46:04,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:46:04,600 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:46:04,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:46:04,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:46:04,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:46:04,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:46:04,603 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:46:04,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:46:04,604 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:46:04,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:46:04,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:46:04,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:46:04,606 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:46:04,607 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:46:04,607 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:46:04,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:46:04,608 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:46:04,608 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 06:46:04,608 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 06:46:04,609 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:46:04,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:46:04,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:46:04,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:46:04,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:46:04,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:46:04,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:46:04,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:46:04,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:46:04,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:46:04,612 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 06:46:04,612 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 06:46:04,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:46:04,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:46:04,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:46:04,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:46:04,613 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 06:46:04,613 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_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f [2023-11-29 06:46:04,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:46:04,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:46:04,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:46:04,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:46:04,955 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:46:04,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2023-11-29 06:46:07,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:46:07,979 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:46:07,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2023-11-29 06:46:08,018 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data/fd0ccba4f/8598c56658f0489e9fc0d79e01d0fe66/FLAG5c1869b97 [2023-11-29 06:46:08,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/data/fd0ccba4f/8598c56658f0489e9fc0d79e01d0fe66 [2023-11-29 06:46:08,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:46:08,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:46:08,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:08,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:46:08,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:46:08,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:08,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf9a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08, skipping insertion in model container [2023-11-29 06:46:08,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:08,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:46:08,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:08,683 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 06:46:08,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:46:08,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:08,782 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:46:08,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:08,922 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:46:08,928 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:46:08,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08 WrapperNode [2023-11-29 06:46:08,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:08,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:46:08,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:46:08,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:46:08,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:08,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,028 INFO L138 Inliner]: procedures = 285, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1048 [2023-11-29 06:46:09,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:46:09,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:46:09,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:46:09,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:46:09,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,148 INFO L175 MemorySlicer]: Split 264 memory accesses to 5 slices as follows [2, 3, 5, 34, 220]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 56 writes are split as follows [0, 2, 1, 4, 49]. [2023-11-29 06:46:09,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:46:09,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:46:09,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:46:09,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:46:09,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (1/1) ... [2023-11-29 06:46:09,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:46:09,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:09,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:09,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:46:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-29 06:46:09,293 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-29 06:46:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 06:46:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 06:46:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 06:46:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 06:46:09,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 06:46:09,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:46:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 06:46:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 06:46:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 06:46:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 06:46:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:46:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 06:46:09,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 06:46:09,296 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-29 06:46:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-29 06:46:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 06:46:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 06:46:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:46:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:46:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-29 06:46:09,297 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-29 06:46:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:46:09,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 06:46:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 06:46:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 06:46:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 06:46:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-29 06:46:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-29 06:46:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:46:09,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:46:09,551 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:46:09,553 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:46:13,744 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:46:13,897 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:46:13,897 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-29 06:46:13,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:13 BoogieIcfgContainer [2023-11-29 06:46:13,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:46:13,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:46:13,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:46:13,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:46:13,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:46:08" (1/3) ... [2023-11-29 06:46:13,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35860a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:13, skipping insertion in model container [2023-11-29 06:46:13,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:08" (2/3) ... [2023-11-29 06:46:13,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35860a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:46:13, skipping insertion in model container [2023-11-29 06:46:13,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:13" (3/3) ... [2023-11-29 06:46:13,916 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-1.i [2023-11-29 06:46:13,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:46:13,935 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 528 error locations. [2023-11-29 06:46:13,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:46:14,004 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;@3ef33168, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:46:14,004 INFO L358 AbstractCegarLoop]: Starting to check reachability of 528 error locations. [2023-11-29 06:46:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 982 states, 431 states have (on average 2.51508120649652) internal successors, (1084), 962 states have internal predecessors, (1084), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 06:46:14,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 06:46:14,018 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:14,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 06:46:14,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:14,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:14,024 INFO L85 PathProgramCache]: Analyzing trace with hash 55333, now seen corresponding path program 1 times [2023-11-29 06:46:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:14,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291846535] [2023-11-29 06:46:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:14,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:14,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:14,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:14,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:46:14,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:14,291 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 [2023-11-29 06:46:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:14,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:14,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291846535] [2023-11-29 06:46:14,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291846535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:14,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:46:14,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383411550] [2023-11-29 06:46:14,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:14,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:46:14,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:14,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:46:14,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:14,345 INFO L87 Difference]: Start difference. First operand has 982 states, 431 states have (on average 2.51508120649652) internal successors, (1084), 962 states have internal predecessors, (1084), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 06:46:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:16,204 INFO L93 Difference]: Finished difference Result 1054 states and 1123 transitions. [2023-11-29 06:46:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:46:16,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-29 06:46:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:16,226 INFO L225 Difference]: With dead ends: 1054 [2023-11-29 06:46:16,226 INFO L226 Difference]: Without dead ends: 1053 [2023-11-29 06:46:16,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:16,231 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 650 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:16,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 862 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 06:46:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-11-29 06:46:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 995. [2023-11-29 06:46:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 459 states have (on average 2.3398692810457518) internal successors, (1074), 977 states have internal predecessors, (1074), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1104 transitions. [2023-11-29 06:46:16,312 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1104 transitions. Word has length 2 [2023-11-29 06:46:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:16,312 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1104 transitions. [2023-11-29 06:46:16,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 06:46:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1104 transitions. [2023-11-29 06:46:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 06:46:16,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:16,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 06:46:16,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:16,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:16,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:16,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 55334, now seen corresponding path program 1 times [2023-11-29 06:46:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:16,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631752848] [2023-11-29 06:46:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:16,518 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 [2023-11-29 06:46:16,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:16,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:16,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:16,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:46:16,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:16,634 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 [2023-11-29 06:46:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:16,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:16,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631752848] [2023-11-29 06:46:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631752848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:16,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:16,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:46:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904425622] [2023-11-29 06:46:16,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:16,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:46:16,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:16,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:46:16,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:16,651 INFO L87 Difference]: Start difference. First operand 995 states and 1104 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 06:46:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:19,695 INFO L93 Difference]: Finished difference Result 1353 states and 1498 transitions. [2023-11-29 06:46:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:46:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-29 06:46:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:19,703 INFO L225 Difference]: With dead ends: 1353 [2023-11-29 06:46:19,703 INFO L226 Difference]: Without dead ends: 1353 [2023-11-29 06:46:19,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:19,704 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 382 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:19,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1265 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 06:46:19,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2023-11-29 06:46:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1165. [2023-11-29 06:46:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 628 states have (on average 2.3121019108280256) internal successors, (1452), 1145 states have internal predecessors, (1452), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:46:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1486 transitions. [2023-11-29 06:46:19,731 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1486 transitions. Word has length 2 [2023-11-29 06:46:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:19,731 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1486 transitions. [2023-11-29 06:46:19,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-29 06:46:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1486 transitions. [2023-11-29 06:46:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 06:46:19,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:19,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 06:46:19,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:19,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:19,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:19,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash -435639276, now seen corresponding path program 1 times [2023-11-29 06:46:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:19,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896742699] [2023-11-29 06:46:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:19,934 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 [2023-11-29 06:46:19,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:19,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:19,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:20,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:20,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:20,085 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 [2023-11-29 06:46:20,090 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 [2023-11-29 06:46:20,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:46:20,147 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 [2023-11-29 06:46:20,166 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:46:20,166 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 [2023-11-29 06:46:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:20,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:20,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:20,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896742699] [2023-11-29 06:46:20,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896742699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:20,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:20,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:46:20,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362548736] [2023-11-29 06:46:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:20,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:20,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:20,189 INFO L87 Difference]: Start difference. First operand 1165 states and 1486 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:24,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:24,312 INFO L93 Difference]: Finished difference Result 1792 states and 2170 transitions. [2023-11-29 06:46:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:46:24,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 06:46:24,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:24,322 INFO L225 Difference]: With dead ends: 1792 [2023-11-29 06:46:24,322 INFO L226 Difference]: Without dead ends: 1792 [2023-11-29 06:46:24,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:24,324 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1292 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:24,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 1013 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 06:46:24,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2023-11-29 06:46:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1281. [2023-11-29 06:46:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 744 states have (on average 2.293010752688172) internal successors, (1706), 1261 states have internal predecessors, (1706), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:46:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1740 transitions. [2023-11-29 06:46:24,356 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1740 transitions. Word has length 6 [2023-11-29 06:46:24,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:24,356 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1740 transitions. [2023-11-29 06:46:24,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1740 transitions. [2023-11-29 06:46:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:46:24,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:24,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:24,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:24,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:24,557 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:24,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:24,558 INFO L85 PathProgramCache]: Analyzing trace with hash -619915645, now seen corresponding path program 1 times [2023-11-29 06:46:24,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:24,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427424585] [2023-11-29 06:46:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:24,559 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 [2023-11-29 06:46:24,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:24,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:24,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:24,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:46:24,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:24,709 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 [2023-11-29 06:46:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:24,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:24,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427424585] [2023-11-29 06:46:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427424585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:24,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:24,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:46:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574580833] [2023-11-29 06:46:24,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:24,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:46:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:24,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:46:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:24,723 INFO L87 Difference]: Start difference. First operand 1281 states and 1740 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:26,728 INFO L93 Difference]: Finished difference Result 1760 states and 2444 transitions. [2023-11-29 06:46:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:46:26,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 06:46:26,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:26,737 INFO L225 Difference]: With dead ends: 1760 [2023-11-29 06:46:26,737 INFO L226 Difference]: Without dead ends: 1760 [2023-11-29 06:46:26,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:26,739 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 869 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:26,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1073 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 06:46:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-11-29 06:46:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1236. [2023-11-29 06:46:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 744 states have (on average 2.213709677419355) internal successors, (1647), 1216 states have internal predecessors, (1647), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:46:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1681 transitions. [2023-11-29 06:46:26,775 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1681 transitions. Word has length 7 [2023-11-29 06:46:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:26,775 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1681 transitions. [2023-11-29 06:46:26,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1681 transitions. [2023-11-29 06:46:26,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:46:26,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:26,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:26,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:26,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:26,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:26,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:26,979 INFO L85 PathProgramCache]: Analyzing trace with hash -619915644, now seen corresponding path program 1 times [2023-11-29 06:46:26,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:26,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382019225] [2023-11-29 06:46:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:26,980 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 [2023-11-29 06:46:26,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:26,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:26,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:27,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:46:27,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:27,102 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 [2023-11-29 06:46:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:27,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:27,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:27,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382019225] [2023-11-29 06:46:27,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382019225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:27,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:27,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:46:27,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233571504] [2023-11-29 06:46:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:46:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:27,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:46:27,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:27,126 INFO L87 Difference]: Start difference. First operand 1236 states and 1681 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:30,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:30,016 INFO L93 Difference]: Finished difference Result 1793 states and 2433 transitions. [2023-11-29 06:46:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:46:30,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 06:46:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:30,025 INFO L225 Difference]: With dead ends: 1793 [2023-11-29 06:46:30,025 INFO L226 Difference]: Without dead ends: 1793 [2023-11-29 06:46:30,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:30,026 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 620 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:30,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1340 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 06:46:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2023-11-29 06:46:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1226. [2023-11-29 06:46:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 744 states have (on average 2.181451612903226) internal successors, (1623), 1206 states have internal predecessors, (1623), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:46:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1657 transitions. [2023-11-29 06:46:30,055 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1657 transitions. Word has length 7 [2023-11-29 06:46:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:30,055 INFO L495 AbstractCegarLoop]: Abstraction has 1226 states and 1657 transitions. [2023-11-29 06:46:30,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:30,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1657 transitions. [2023-11-29 06:46:30,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 06:46:30,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:30,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:30,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 06:46:30,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:30,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:30,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash -3807760, now seen corresponding path program 1 times [2023-11-29 06:46:30,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:30,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696384880] [2023-11-29 06:46:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:30,259 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 [2023-11-29 06:46:30,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:30,260 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:30,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:30,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:46:30,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:30,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:30,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:30,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:30,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696384880] [2023-11-29 06:46:30,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696384880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:30,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:30,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:46:30,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878767643] [2023-11-29 06:46:30,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:30,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:30,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:30,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:30,441 INFO L87 Difference]: Start difference. First operand 1226 states and 1657 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:32,173 INFO L93 Difference]: Finished difference Result 1658 states and 2181 transitions. [2023-11-29 06:46:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:46:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 06:46:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:32,182 INFO L225 Difference]: With dead ends: 1658 [2023-11-29 06:46:32,182 INFO L226 Difference]: Without dead ends: 1658 [2023-11-29 06:46:32,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:32,183 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 494 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:32,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 2481 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 06:46:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-11-29 06:46:32,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1436. [2023-11-29 06:46:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 954 states have (on average 2.190775681341719) internal successors, (2090), 1416 states have internal predecessors, (2090), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:46:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2124 transitions. [2023-11-29 06:46:32,220 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2124 transitions. Word has length 12 [2023-11-29 06:46:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:32,220 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2124 transitions. [2023-11-29 06:46:32,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2124 transitions. [2023-11-29 06:46:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 06:46:32,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:32,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:32,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:32,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:32,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr332REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:32,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:32,422 INFO L85 PathProgramCache]: Analyzing trace with hash -592731144, now seen corresponding path program 1 times [2023-11-29 06:46:32,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967659902] [2023-11-29 06:46:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:32,423 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 [2023-11-29 06:46:32,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:32,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:32,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:46:32,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:32,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:32,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:32,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967659902] [2023-11-29 06:46:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967659902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:32,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:32,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:46:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274670588] [2023-11-29 06:46:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:32,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:46:32,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:46:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:32,577 INFO L87 Difference]: Start difference. First operand 1436 states and 2124 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-29 06:46:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:33,283 INFO L93 Difference]: Finished difference Result 1352 states and 1964 transitions. [2023-11-29 06:46:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:46:33,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2023-11-29 06:46:33,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:33,291 INFO L225 Difference]: With dead ends: 1352 [2023-11-29 06:46:33,291 INFO L226 Difference]: Without dead ends: 1352 [2023-11-29 06:46:33,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:33,292 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 70 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:33,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1583 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:46:33,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-11-29 06:46:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2023-11-29 06:46:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 894 states have (on average 2.1588366890380315) internal successors, (1930), 1332 states have internal predecessors, (1930), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:46:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1964 transitions. [2023-11-29 06:46:33,315 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1964 transitions. Word has length 12 [2023-11-29 06:46:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:33,315 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 1964 transitions. [2023-11-29 06:46:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-29 06:46:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1964 transitions. [2023-11-29 06:46:33,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:46:33,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:33,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:33,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 06:46:33,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:33,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:33,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:33,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1869888457, now seen corresponding path program 1 times [2023-11-29 06:46:33,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:33,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495383434] [2023-11-29 06:46:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:33,518 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 [2023-11-29 06:46:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:33,519 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:33,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 06:46:33,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:33,709 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:46:33,710 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:46:33,710 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:46:33,714 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 30 treesize of output 39 [2023-11-29 06:46:33,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:46:33,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-29 06:46:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:33,787 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:33,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:33,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495383434] [2023-11-29 06:46:33,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495383434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:33,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:33,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:46:33,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188020492] [2023-11-29 06:46:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:33,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:33,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:33,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:33,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:33,789 INFO L87 Difference]: Start difference. First operand 1352 states and 1964 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:35,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:35,438 INFO L93 Difference]: Finished difference Result 1868 states and 2266 transitions. [2023-11-29 06:46:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:46:35,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 06:46:35,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:35,453 INFO L225 Difference]: With dead ends: 1868 [2023-11-29 06:46:35,453 INFO L226 Difference]: Without dead ends: 1868 [2023-11-29 06:46:35,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:35,453 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 821 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:35,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2546 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 06:46:35,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2023-11-29 06:46:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1085. [2023-11-29 06:46:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 629 states have (on average 2.1446740858505566) internal successors, (1349), 1067 states have internal predecessors, (1349), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1379 transitions. [2023-11-29 06:46:35,475 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1379 transitions. Word has length 15 [2023-11-29 06:46:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:35,475 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1379 transitions. [2023-11-29 06:46:35,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1379 transitions. [2023-11-29 06:46:35,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:46:35,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:35,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:35,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:35,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:35,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:35,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1792162074, now seen corresponding path program 1 times [2023-11-29 06:46:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:35,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290970886] [2023-11-29 06:46:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:35,678 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 [2023-11-29 06:46:35,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:35,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:35,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:35,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:46:35,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:35,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:35,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:35,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290970886] [2023-11-29 06:46:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290970886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:35,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:46:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924142194] [2023-11-29 06:46:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:35,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:46:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:46:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:35,859 INFO L87 Difference]: Start difference. First operand 1085 states and 1379 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:36,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:36,570 INFO L93 Difference]: Finished difference Result 1031 states and 1299 transitions. [2023-11-29 06:46:36,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:46:36,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 06:46:36,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:36,575 INFO L225 Difference]: With dead ends: 1031 [2023-11-29 06:46:36,575 INFO L226 Difference]: Without dead ends: 1031 [2023-11-29 06:46:36,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:36,576 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 70 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:36,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1509 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:46:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-11-29 06:46:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2023-11-29 06:46:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 599 states have (on average 2.1185308848080133) internal successors, (1269), 1013 states have internal predecessors, (1269), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1299 transitions. [2023-11-29 06:46:36,591 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1299 transitions. Word has length 15 [2023-11-29 06:46:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:36,591 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1299 transitions. [2023-11-29 06:46:36,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1299 transitions. [2023-11-29 06:46:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:46:36,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:36,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:36,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 06:46:36,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:36,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:36,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash -14134636, now seen corresponding path program 1 times [2023-11-29 06:46:36,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:36,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234220441] [2023-11-29 06:46:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:36,793 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 [2023-11-29 06:46:36,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:36,794 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:36,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:46:36,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:36,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:36,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:36,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234220441] [2023-11-29 06:46:36,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234220441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:36,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:36,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:46:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876550602] [2023-11-29 06:46:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:36,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:36,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:36,960 INFO L87 Difference]: Start difference. First operand 1031 states and 1299 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-29 06:46:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:37,859 INFO L93 Difference]: Finished difference Result 1017 states and 1257 transitions. [2023-11-29 06:46:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:46:37,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-11-29 06:46:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:37,873 INFO L225 Difference]: With dead ends: 1017 [2023-11-29 06:46:37,873 INFO L226 Difference]: Without dead ends: 1017 [2023-11-29 06:46:37,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:37,874 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 58 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:37,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2220 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:46:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2023-11-29 06:46:37,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1015. [2023-11-29 06:46:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 597 states have (on average 2.0519262981574538) internal successors, (1225), 997 states have internal predecessors, (1225), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1255 transitions. [2023-11-29 06:46:37,893 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1255 transitions. Word has length 17 [2023-11-29 06:46:37,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:37,893 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1255 transitions. [2023-11-29 06:46:37,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-29 06:46:37,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1255 transitions. [2023-11-29 06:46:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 06:46:37,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:37,895 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] [2023-11-29 06:46:37,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:38,095 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:38,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash 734266083, now seen corresponding path program 1 times [2023-11-29 06:46:38,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:38,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310878498] [2023-11-29 06:46:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:38,097 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 [2023-11-29 06:46:38,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:38,098 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:38,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:38,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:38,298 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 [2023-11-29 06:46:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:38,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:38,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310878498] [2023-11-29 06:46:38,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310878498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:38,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:38,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:46:38,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058657498] [2023-11-29 06:46:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:38,450 INFO L87 Difference]: Start difference. First operand 1015 states and 1255 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 06:46:41,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:41,823 INFO L93 Difference]: Finished difference Result 1482 states and 1848 transitions. [2023-11-29 06:46:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:46:41,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-29 06:46:41,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:41,830 INFO L225 Difference]: With dead ends: 1482 [2023-11-29 06:46:41,830 INFO L226 Difference]: Without dead ends: 1482 [2023-11-29 06:46:41,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:41,831 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 523 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:41,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1885 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 06:46:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-29 06:46:41,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1011. [2023-11-29 06:46:41,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 597 states have (on average 2.0385259631490786) internal successors, (1217), 993 states have internal predecessors, (1217), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:41,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1247 transitions. [2023-11-29 06:46:41,845 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1247 transitions. Word has length 31 [2023-11-29 06:46:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:41,845 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1247 transitions. [2023-11-29 06:46:41,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 06:46:41,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1247 transitions. [2023-11-29 06:46:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 06:46:41,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:41,846 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] [2023-11-29 06:46:41,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 06:46:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:42,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:42,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 734266082, now seen corresponding path program 1 times [2023-11-29 06:46:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052374212] [2023-11-29 06:46:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:42,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:42,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:42,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:42,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:42,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:46:42,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:42,265 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 [2023-11-29 06:46:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:42,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:42,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:42,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052374212] [2023-11-29 06:46:42,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052374212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:42,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:42,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:46:42,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872621975] [2023-11-29 06:46:42,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:42,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:42,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:42,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:42,342 INFO L87 Difference]: Start difference. First operand 1011 states and 1247 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 06:46:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:44,590 INFO L93 Difference]: Finished difference Result 1391 states and 1749 transitions. [2023-11-29 06:46:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:46:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-29 06:46:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:44,596 INFO L225 Difference]: With dead ends: 1391 [2023-11-29 06:46:44,596 INFO L226 Difference]: Without dead ends: 1391 [2023-11-29 06:46:44,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:44,597 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 754 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:44,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1032 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 06:46:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2023-11-29 06:46:44,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1007. [2023-11-29 06:46:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 597 states have (on average 2.0251256281407035) internal successors, (1209), 989 states have internal predecessors, (1209), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1239 transitions. [2023-11-29 06:46:44,615 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1239 transitions. Word has length 31 [2023-11-29 06:46:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:44,615 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1239 transitions. [2023-11-29 06:46:44,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 06:46:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1239 transitions. [2023-11-29 06:46:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 06:46:44,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:44,617 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] [2023-11-29 06:46:44,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:44,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:44,819 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:44,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:44,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2030840777, now seen corresponding path program 1 times [2023-11-29 06:46:44,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:44,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140606789] [2023-11-29 06:46:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:44,820 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 [2023-11-29 06:46:44,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:44,821 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:44,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:45,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:46:45,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:45,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:45,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140606789] [2023-11-29 06:46:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140606789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:45,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:45,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:46:45,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278298164] [2023-11-29 06:46:45,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:45,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:45,110 INFO L87 Difference]: Start difference. First operand 1007 states and 1239 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:46,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:46,009 INFO L93 Difference]: Finished difference Result 995 states and 1219 transitions. [2023-11-29 06:46:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:46:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-29 06:46:46,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:46,015 INFO L225 Difference]: With dead ends: 995 [2023-11-29 06:46:46,016 INFO L226 Difference]: Without dead ends: 995 [2023-11-29 06:46:46,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:46:46,016 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 23 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:46,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2206 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:46:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-29 06:46:46,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2023-11-29 06:46:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 585 states have (on average 2.0324786324786324) internal successors, (1189), 977 states have internal predecessors, (1189), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 06:46:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1219 transitions. [2023-11-29 06:46:46,032 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1219 transitions. Word has length 51 [2023-11-29 06:46:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:46,032 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1219 transitions. [2023-11-29 06:46:46,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1219 transitions. [2023-11-29 06:46:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 06:46:46,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:46,034 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] [2023-11-29 06:46:46,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:46,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:46,235 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:46,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1551890552, now seen corresponding path program 1 times [2023-11-29 06:46:46,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:46,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836720248] [2023-11-29 06:46:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:46,236 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 [2023-11-29 06:46:46,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:46,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:46,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:46,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:46:46,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:46,583 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 06:46:46,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 06:46:46,622 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 06:46:46,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 06:46:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:46,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:46,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:46,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836720248] [2023-11-29 06:46:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836720248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:46,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 06:46:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37002238] [2023-11-29 06:46:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:46,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:46:46,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:46:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:46,910 INFO L87 Difference]: Start difference. First operand 995 states and 1219 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:49,225 INFO L93 Difference]: Finished difference Result 1813 states and 2222 transitions. [2023-11-29 06:46:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:46:49,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 06:46:49,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:49,234 INFO L225 Difference]: With dead ends: 1813 [2023-11-29 06:46:49,234 INFO L226 Difference]: Without dead ends: 1813 [2023-11-29 06:46:49,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:46:49,235 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 713 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:49,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 918 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 06:46:49,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2023-11-29 06:46:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1343. [2023-11-29 06:46:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 918 states have (on average 2.02723311546841) internal successors, (1861), 1313 states have internal predecessors, (1861), 29 states have call successors, (29), 9 states have call predecessors, (29), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 06:46:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1915 transitions. [2023-11-29 06:46:49,266 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1915 transitions. Word has length 55 [2023-11-29 06:46:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:49,267 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1915 transitions. [2023-11-29 06:46:49,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1915 transitions. [2023-11-29 06:46:49,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 06:46:49,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:49,268 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] [2023-11-29 06:46:49,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:49,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:49,469 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:49,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1551890553, now seen corresponding path program 1 times [2023-11-29 06:46:49,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:49,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332297227] [2023-11-29 06:46:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:49,470 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 [2023-11-29 06:46:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:49,471 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:49,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:49,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:46:49,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:46:49,806 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 [2023-11-29 06:46:49,862 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 06:46:49,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-29 06:46:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:50,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:50,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:50,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332297227] [2023-11-29 06:46:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332297227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:50,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:50,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:46:50,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522896155] [2023-11-29 06:46:50,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:50,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:46:50,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:50,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:46:50,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:50,405 INFO L87 Difference]: Start difference. First operand 1343 states and 1915 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:53,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:53,099 INFO L93 Difference]: Finished difference Result 1348 states and 1921 transitions. [2023-11-29 06:46:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:46:53,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 06:46:53,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:53,105 INFO L225 Difference]: With dead ends: 1348 [2023-11-29 06:46:53,106 INFO L226 Difference]: Without dead ends: 1348 [2023-11-29 06:46:53,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:46:53,106 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 0 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:53,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 06:46:53,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2023-11-29 06:46:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1348. [2023-11-29 06:46:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 922 states have (on average 2.022776572668113) internal successors, (1865), 1317 states have internal predecessors, (1865), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 06:46:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1921 transitions. [2023-11-29 06:46:53,132 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1921 transitions. Word has length 55 [2023-11-29 06:46:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:53,132 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1921 transitions. [2023-11-29 06:46:53,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1921 transitions. [2023-11-29 06:46:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:46:53,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:53,133 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, 1] [2023-11-29 06:46:53,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 06:46:53,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:53,334 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:53,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash 298511460, now seen corresponding path program 1 times [2023-11-29 06:46:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254848784] [2023-11-29 06:46:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:53,335 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 [2023-11-29 06:46:53,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:53,336 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:53,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:53,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:46:53,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:53,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:53,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:53,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254848784] [2023-11-29 06:46:53,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254848784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:53,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:53,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:46:53,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731260995] [2023-11-29 06:46:53,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:53,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:46:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:46:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:46:53,700 INFO L87 Difference]: Start difference. First operand 1348 states and 1921 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 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) [2023-11-29 06:46:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:55,568 INFO L93 Difference]: Finished difference Result 1352 states and 1929 transitions. [2023-11-29 06:46:55,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:46:55,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 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 59 [2023-11-29 06:46:55,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:55,576 INFO L225 Difference]: With dead ends: 1352 [2023-11-29 06:46:55,576 INFO L226 Difference]: Without dead ends: 1352 [2023-11-29 06:46:55,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:46:55,577 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 19 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:55,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3610 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 06:46:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-11-29 06:46:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1350. [2023-11-29 06:46:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 923 states have (on average 2.021668472372698) internal successors, (1866), 1318 states have internal predecessors, (1866), 30 states have call successors, (30), 10 states have call predecessors, (30), 8 states have return successors, (29), 22 states have call predecessors, (29), 26 states have call successors, (29) [2023-11-29 06:46:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1925 transitions. [2023-11-29 06:46:55,596 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1925 transitions. Word has length 59 [2023-11-29 06:46:55,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:55,596 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1925 transitions. [2023-11-29 06:46:55,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 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) [2023-11-29 06:46:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1925 transitions. [2023-11-29 06:46:55,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 06:46:55,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:55,597 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, 1, 1, 1, 1] [2023-11-29 06:46:55,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:55,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:55,798 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:55,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:55,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1320167083, now seen corresponding path program 1 times [2023-11-29 06:46:55,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:55,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037599988] [2023-11-29 06:46:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:55,799 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 [2023-11-29 06:46:55,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:55,800 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:55,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 06:46:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:56,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:46:56,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:56,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:56,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:56,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037599988] [2023-11-29 06:46:56,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037599988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:56,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:56,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:46:56,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597738475] [2023-11-29 06:46:56,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:46:56,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:56,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:46:56,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:46:56,076 INFO L87 Difference]: Start difference. First operand 1350 states and 1925 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:57,425 INFO L93 Difference]: Finished difference Result 1374 states and 1949 transitions. [2023-11-29 06:46:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:46:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 06:46:57,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:57,431 INFO L225 Difference]: With dead ends: 1374 [2023-11-29 06:46:57,431 INFO L226 Difference]: Without dead ends: 1374 [2023-11-29 06:46:57,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:46:57,432 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 16 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:57,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3763 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:46:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-11-29 06:46:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1370. [2023-11-29 06:46:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 937 states have (on average 2.0117395944503733) internal successors, (1885), 1334 states have internal predecessors, (1885), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 06:46:57,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1946 transitions. [2023-11-29 06:46:57,451 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1946 transitions. Word has length 62 [2023-11-29 06:46:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:57,452 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1946 transitions. [2023-11-29 06:46:57,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1946 transitions. [2023-11-29 06:46:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 06:46:57,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:57,452 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, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:57,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:46:57,653 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:46:57,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:57,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1559192545, now seen corresponding path program 1 times [2023-11-29 06:46:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:46:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476333111] [2023-11-29 06:46:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:57,654 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 [2023-11-29 06:46:57,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:46:57,655 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:46:57,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 06:46:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:58,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:58,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:58,046 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 [2023-11-29 06:46:58,147 WARN L876 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2023-11-29 06:46:58,161 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 06:46:58,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 06:46:58,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:58,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:58,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:46:58,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476333111] [2023-11-29 06:46:58,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476333111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:58,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:58,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:46:58,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846544209] [2023-11-29 06:46:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:58,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:46:58,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:46:58,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:46:58,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-29 06:46:58,172 INFO L87 Difference]: Start difference. First operand 1370 states and 1946 transitions. Second operand has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:47:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:00,415 INFO L93 Difference]: Finished difference Result 1753 states and 2454 transitions. [2023-11-29 06:47:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:47:00,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-11-29 06:47:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:00,423 INFO L225 Difference]: With dead ends: 1753 [2023-11-29 06:47:00,423 INFO L226 Difference]: Without dead ends: 1753 [2023-11-29 06:47:00,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-29 06:47:00,424 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 723 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1207 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:00,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 977 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1113 Invalid, 0 Unknown, 1207 Unchecked, 2.2s Time] [2023-11-29 06:47:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-11-29 06:47:00,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1369. [2023-11-29 06:47:00,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 937 states have (on average 2.0096051227321237) internal successors, (1883), 1333 states have internal predecessors, (1883), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 06:47:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1944 transitions. [2023-11-29 06:47:00,453 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1944 transitions. Word has length 64 [2023-11-29 06:47:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:00,454 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 1944 transitions. [2023-11-29 06:47:00,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:47:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1944 transitions. [2023-11-29 06:47:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 06:47:00,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:00,455 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, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:00,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-29 06:47:00,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:00,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:00,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1559192544, now seen corresponding path program 1 times [2023-11-29 06:47:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:00,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802403148] [2023-11-29 06:47:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:00,657 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 [2023-11-29 06:47:00,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:00,657 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:00,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 06:47:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:01,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:47:01,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:01,030 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 [2023-11-29 06:47:01,035 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 [2023-11-29 06:47:01,453 WARN L876 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2023-11-29 06:47:01,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:47:01,467 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 [2023-11-29 06:47:01,482 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:47:01,482 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 [2023-11-29 06:47:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:01,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:47:01,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:01,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802403148] [2023-11-29 06:47:01,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802403148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:47:01,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:47:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:47:01,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086856847] [2023-11-29 06:47:01,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:47:01,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:47:01,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:47:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-29 06:47:01,497 INFO L87 Difference]: Start difference. First operand 1369 states and 1944 transitions. Second operand has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:47:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:06,385 INFO L93 Difference]: Finished difference Result 2312 states and 3241 transitions. [2023-11-29 06:47:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:47:06,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-11-29 06:47:06,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:06,391 INFO L225 Difference]: With dead ends: 2312 [2023-11-29 06:47:06,391 INFO L226 Difference]: Without dead ends: 2312 [2023-11-29 06:47:06,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-29 06:47:06,392 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 1304 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1617 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:06,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1499 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2060 Invalid, 0 Unknown, 1617 Unchecked, 4.8s Time] [2023-11-29 06:47:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2023-11-29 06:47:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1365. [2023-11-29 06:47:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 941 states have (on average 1.9883103081827842) internal successors, (1871), 1329 states have internal predecessors, (1871), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 06:47:06,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1932 transitions. [2023-11-29 06:47:06,413 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1932 transitions. Word has length 64 [2023-11-29 06:47:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:06,414 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1932 transitions. [2023-11-29 06:47:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:47:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1932 transitions. [2023-11-29 06:47:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 06:47:06,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:06,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:06,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-29 06:47:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:06,615 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:06,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1110857919, now seen corresponding path program 1 times [2023-11-29 06:47:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:06,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470565465] [2023-11-29 06:47:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:06,616 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 [2023-11-29 06:47:06,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:06,617 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:06,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 06:47:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:06,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:47:06,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:06,947 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 [2023-11-29 06:47:06,979 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 [2023-11-29 06:47:06,998 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 [2023-11-29 06:47:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:07,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:47:07,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470565465] [2023-11-29 06:47:07,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470565465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:47:07,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:47:07,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:47:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261010392] [2023-11-29 06:47:07,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:47:07,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:47:07,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:47:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:47:07,036 INFO L87 Difference]: Start difference. First operand 1365 states and 1932 transitions. Second operand has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:47:11,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:11,041 INFO L93 Difference]: Finished difference Result 1376 states and 1944 transitions. [2023-11-29 06:47:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:47:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-11-29 06:47:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:11,046 INFO L225 Difference]: With dead ends: 1376 [2023-11-29 06:47:11,046 INFO L226 Difference]: Without dead ends: 1376 [2023-11-29 06:47:11,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:47:11,047 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 14 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:11,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3256 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 06:47:11,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-11-29 06:47:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1375. [2023-11-29 06:47:11,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 949 states have (on average 1.9841938883034773) internal successors, (1883), 1337 states have internal predecessors, (1883), 32 states have call successors, (32), 16 states have call predecessors, (32), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 06:47:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1944 transitions. [2023-11-29 06:47:11,070 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1944 transitions. Word has length 70 [2023-11-29 06:47:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:11,071 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 1944 transitions. [2023-11-29 06:47:11,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:47:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1944 transitions. [2023-11-29 06:47:11,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 06:47:11,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:11,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:11,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 06:47:11,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:11,272 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:11,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash 76857197, now seen corresponding path program 1 times [2023-11-29 06:47:11,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:11,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810462262] [2023-11-29 06:47:11,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:11,273 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 [2023-11-29 06:47:11,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:11,274 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:11,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 06:47:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:11,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 06:47:11,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:11,580 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 [2023-11-29 06:47:11,615 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 [2023-11-29 06:47:11,623 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 [2023-11-29 06:47:11,664 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 [2023-11-29 06:47:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:11,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:47:11,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:11,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810462262] [2023-11-29 06:47:11,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810462262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:47:11,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:47:11,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:47:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768433078] [2023-11-29 06:47:11,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:47:11,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:47:11,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:47:11,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:47:11,745 INFO L87 Difference]: Start difference. First operand 1375 states and 1944 transitions. Second operand has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:47:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:17,153 INFO L93 Difference]: Finished difference Result 1375 states and 1942 transitions. [2023-11-29 06:47:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:47:17,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2023-11-29 06:47:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:17,158 INFO L225 Difference]: With dead ends: 1375 [2023-11-29 06:47:17,158 INFO L226 Difference]: Without dead ends: 1375 [2023-11-29 06:47:17,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:47:17,158 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 12 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:17,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3828 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 06:47:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2023-11-29 06:47:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1375. [2023-11-29 06:47:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 949 states have (on average 1.982086406743941) internal successors, (1881), 1337 states have internal predecessors, (1881), 32 states have call successors, (32), 16 states have call predecessors, (32), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 06:47:17,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1942 transitions. [2023-11-29 06:47:17,185 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1942 transitions. Word has length 71 [2023-11-29 06:47:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:17,185 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 1942 transitions. [2023-11-29 06:47:17,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:47:17,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1942 transitions. [2023-11-29 06:47:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 06:47:17,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:17,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:17,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 06:47:17,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:17,387 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:17,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:17,388 INFO L85 PathProgramCache]: Analyzing trace with hash -998618493, now seen corresponding path program 1 times [2023-11-29 06:47:17,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:17,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163441567] [2023-11-29 06:47:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:17,389 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 [2023-11-29 06:47:17,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:17,390 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:17,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 06:47:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:17,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:47:17,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:17,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:47:17,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:17,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163441567] [2023-11-29 06:47:17,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163441567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:47:17,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:47:17,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:47:17,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694294296] [2023-11-29 06:47:17,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:47:17,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:47:17,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:17,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:47:17,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:47:17,722 INFO L87 Difference]: Start difference. First operand 1375 states and 1942 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 06:47:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:18,640 INFO L93 Difference]: Finished difference Result 1383 states and 1952 transitions. [2023-11-29 06:47:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:47:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2023-11-29 06:47:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:18,645 INFO L225 Difference]: With dead ends: 1383 [2023-11-29 06:47:18,651 INFO L226 Difference]: Without dead ends: 1381 [2023-11-29 06:47:18,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:47:18,652 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 4 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:18,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2227 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:47:18,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2023-11-29 06:47:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2023-11-29 06:47:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 953 states have (on average 1.9800629590766001) internal successors, (1887), 1343 states have internal predecessors, (1887), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:47:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1950 transitions. [2023-11-29 06:47:18,670 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1950 transitions. Word has length 76 [2023-11-29 06:47:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:18,671 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 1950 transitions. [2023-11-29 06:47:18,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 06:47:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1950 transitions. [2023-11-29 06:47:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 06:47:18,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:18,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:18,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-29 06:47:18,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:18,872 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:18,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2135152941, now seen corresponding path program 1 times [2023-11-29 06:47:18,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:18,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493458949] [2023-11-29 06:47:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:47:18,873 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 [2023-11-29 06:47:18,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:18,874 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:18,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 06:47:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:47:19,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:47:19,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:19,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:19,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493458949] [2023-11-29 06:47:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493458949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:19,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:47:19,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 06:47:19,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802065777] [2023-11-29 06:47:19,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:19,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:47:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:19,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:47:19,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:47:19,317 INFO L87 Difference]: Start difference. First operand 1381 states and 1950 transitions. Second operand has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:20,646 INFO L93 Difference]: Finished difference Result 1395 states and 1968 transitions. [2023-11-29 06:47:20,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:47:20,647 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2023-11-29 06:47:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:20,650 INFO L225 Difference]: With dead ends: 1395 [2023-11-29 06:47:20,650 INFO L226 Difference]: Without dead ends: 1391 [2023-11-29 06:47:20,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:47:20,650 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 27 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:20,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2967 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:47:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2023-11-29 06:47:20,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1389. [2023-11-29 06:47:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 961 states have (on average 1.9739854318418315) internal successors, (1897), 1351 states have internal predecessors, (1897), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:47:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1960 transitions. [2023-11-29 06:47:20,672 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1960 transitions. Word has length 77 [2023-11-29 06:47:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:20,673 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 1960 transitions. [2023-11-29 06:47:20,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1960 transitions. [2023-11-29 06:47:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 06:47:20,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:20,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:20,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-29 06:47:20,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:20,874 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:20,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash -239229693, now seen corresponding path program 2 times [2023-11-29 06:47:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:20,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191894028] [2023-11-29 06:47:20,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:47:20,875 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 [2023-11-29 06:47:20,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:20,876 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:20,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 06:47:21,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:47:21,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:47:21,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:47:21,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:21,540 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:21,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:21,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:21,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191894028] [2023-11-29 06:47:21,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191894028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:21,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:47:21,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 06:47:21,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125392117] [2023-11-29 06:47:21,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:21,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:47:21,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:47:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:47:21,849 INFO L87 Difference]: Start difference. First operand 1389 states and 1960 transitions. Second operand has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 16 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:24,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:24,727 INFO L93 Difference]: Finished difference Result 1413 states and 1998 transitions. [2023-11-29 06:47:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 06:47:24,729 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 16 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2023-11-29 06:47:24,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:24,731 INFO L225 Difference]: With dead ends: 1413 [2023-11-29 06:47:24,731 INFO L226 Difference]: Without dead ends: 1409 [2023-11-29 06:47:24,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=454, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:47:24,732 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 32 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:24,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5929 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 06:47:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2023-11-29 06:47:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1407. [2023-11-29 06:47:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 979 states have (on average 1.9622063329928499) internal successors, (1921), 1369 states have internal predecessors, (1921), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:47:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1984 transitions. [2023-11-29 06:47:24,745 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1984 transitions. Word has length 80 [2023-11-29 06:47:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:24,746 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 1984 transitions. [2023-11-29 06:47:24,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 16 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1984 transitions. [2023-11-29 06:47:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 06:47:24,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:24,747 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:24,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-29 06:47:24,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:24,947 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:24,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1517835459, now seen corresponding path program 3 times [2023-11-29 06:47:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:24,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382930834] [2023-11-29 06:47:24,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:47:24,948 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 [2023-11-29 06:47:24,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:24,949 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:24,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 06:47:25,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 06:47:25,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:47:25,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 06:47:25,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:26,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:26,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382930834] [2023-11-29 06:47:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382930834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:26,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:47:26,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-29 06:47:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902713727] [2023-11-29 06:47:26,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:47:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:47:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2023-11-29 06:47:26,935 INFO L87 Difference]: Start difference. First operand 1407 states and 1984 transitions. Second operand has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:34,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:34,388 INFO L93 Difference]: Finished difference Result 1449 states and 2056 transitions. [2023-11-29 06:47:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 06:47:34,389 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2023-11-29 06:47:34,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:34,391 INFO L225 Difference]: With dead ends: 1449 [2023-11-29 06:47:34,391 INFO L226 Difference]: Without dead ends: 1443 [2023-11-29 06:47:34,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=854, Invalid=1696, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 06:47:34,392 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 69 mSDsluCounter, 8891 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 9636 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:34,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 9636 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 06:47:34,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-11-29 06:47:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2023-11-29 06:47:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1015 states have (on average 1.9379310344827587) internal successors, (1967), 1405 states have internal predecessors, (1967), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:47:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2030 transitions. [2023-11-29 06:47:34,413 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2030 transitions. Word has length 86 [2023-11-29 06:47:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:34,413 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2030 transitions. [2023-11-29 06:47:34,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2030 transitions. [2023-11-29 06:47:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 06:47:34,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:34,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:34,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 06:47:34,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:34,616 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:34,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1951482947, now seen corresponding path program 4 times [2023-11-29 06:47:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247777336] [2023-11-29 06:47:34,617 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 06:47:34,617 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 [2023-11-29 06:47:34,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:34,618 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:34,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 06:47:35,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 06:47:35,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:47:35,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:47:35,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:35,687 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:35,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:47:37,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:37,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247777336] [2023-11-29 06:47:37,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247777336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:47:37,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:47:37,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-11-29 06:47:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865375671] [2023-11-29 06:47:37,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:47:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 06:47:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:47:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 06:47:37,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 06:47:37,959 INFO L87 Difference]: Start difference. First operand 1443 states and 2030 transitions. Second operand has 52 states, 50 states have (on average 2.36) internal successors, (118), 52 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:47:54,546 INFO L93 Difference]: Finished difference Result 1517 states and 2168 transitions. [2023-11-29 06:47:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 06:47:54,548 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.36) internal successors, (118), 52 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2023-11-29 06:47:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:47:54,550 INFO L225 Difference]: With dead ends: 1517 [2023-11-29 06:47:54,550 INFO L226 Difference]: Without dead ends: 1513 [2023-11-29 06:47:54,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2955, Invalid=6357, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 06:47:54,553 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 127 mSDsluCounter, 17783 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 18528 SdHoareTripleChecker+Invalid, 3974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:47:54,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 18528 Invalid, 3974 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2023-11-29 06:47:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2023-11-29 06:47:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1511. [2023-11-29 06:47:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1083 states have (on average 1.9012003693444137) internal successors, (2059), 1473 states have internal predecessors, (2059), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:47:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2122 transitions. [2023-11-29 06:47:54,568 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2122 transitions. Word has length 98 [2023-11-29 06:47:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:47:54,568 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 2122 transitions. [2023-11-29 06:47:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.36) internal successors, (118), 52 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:47:54,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2122 transitions. [2023-11-29 06:47:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 06:47:54,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:47:54,569 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:47:54,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 06:47:54,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:47:54,770 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:47:54,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:47:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -487952893, now seen corresponding path program 5 times [2023-11-29 06:47:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:47:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211893569] [2023-11-29 06:47:54,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:47:54,771 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 [2023-11-29 06:47:54,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:47:54,772 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:47:54,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 06:47:56,232 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 06:47:56,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:47:56,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 06:47:56,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:47:56,275 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 [2023-11-29 06:47:56,389 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:47:56,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:47:56,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 06:47:56,503 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 24 treesize of output 12 [2023-11-29 06:47:57,699 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:47:57,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:47:57,751 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 33 treesize of output 15 [2023-11-29 06:47:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:47:57,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:47:58,252 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2695 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_2695) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 06:47:58,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:47:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211893569] [2023-11-29 06:47:58,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211893569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:47:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [468292633] [2023-11-29 06:47:58,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 06:47:58,254 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:47:58,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:47:58,255 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:47:58,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 06:49:04,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 06:49:04,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:49:04,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-29 06:49:04,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:49:04,395 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 [2023-11-29 06:49:04,675 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:49:04,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:49:04,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:49:04,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 06:49:05,894 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:49:05,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:49:05,972 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 27 treesize of output 15 [2023-11-29 06:49:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:49:05,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:49:10,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [468292633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:49:10,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:49:10,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2023-11-29 06:49:10,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812395581] [2023-11-29 06:49:10,462 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:49:10,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:49:10,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:49:10,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:49:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=315, Unknown=2, NotChecked=36, Total=420 [2023-11-29 06:49:10,463 INFO L87 Difference]: Start difference. First operand 1511 states and 2122 transitions. Second operand has 17 states, 13 states have (on average 9.846153846153847) internal successors, (128), 14 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:49:15,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:49:19,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:49:23,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:49:27,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:49:37,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:49:37,394 INFO L93 Difference]: Finished difference Result 1892 states and 2626 transitions. [2023-11-29 06:49:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:49:37,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 9.846153846153847) internal successors, (128), 14 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 120 [2023-11-29 06:49:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:49:37,397 INFO L225 Difference]: With dead ends: 1892 [2023-11-29 06:49:37,397 INFO L226 Difference]: Without dead ends: 1892 [2023-11-29 06:49:37,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=102, Invalid=500, Unknown=2, NotChecked=46, Total=650 [2023-11-29 06:49:37,398 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 737 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 5033 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 5061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5033 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:49:37,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 4005 Invalid, 5061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5033 Invalid, 4 Unknown, 0 Unchecked, 26.6s Time] [2023-11-29 06:49:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-11-29 06:49:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1508. [2023-11-29 06:49:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1083 states have (on average 1.8956602031394276) internal successors, (2053), 1470 states have internal predecessors, (2053), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:49:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2116 transitions. [2023-11-29 06:49:37,425 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2116 transitions. Word has length 120 [2023-11-29 06:49:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:49:37,425 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 2116 transitions. [2023-11-29 06:49:37,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 9.846153846153847) internal successors, (128), 14 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:49:37,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2116 transitions. [2023-11-29 06:49:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 06:49:37,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:49:37,426 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:49:37,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-11-29 06:49:37,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 06:49:37,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:49:37,827 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:49:37,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:49:37,827 INFO L85 PathProgramCache]: Analyzing trace with hash -487952892, now seen corresponding path program 1 times [2023-11-29 06:49:37,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:49:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547237825] [2023-11-29 06:49:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:37,832 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 [2023-11-29 06:49:37,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:49:37,833 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:49:37,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 06:49:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:49:38,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 06:49:38,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:49:38,634 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 [2023-11-29 06:49:38,903 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 [2023-11-29 06:49:38,950 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:49:38,950 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 [2023-11-29 06:49:38,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:49:39,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:49:39,122 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 18 treesize of output 10 [2023-11-29 06:49:39,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 06:49:40,183 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:49:40,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 06:49:40,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 06:49:40,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:49:40,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 06:49:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:49:40,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:49:42,086 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3744 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3744) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 06:49:42,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:49:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547237825] [2023-11-29 06:49:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547237825] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:49:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [241073036] [2023-11-29 06:49:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:49:42,092 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:49:42,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:49:42,101 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:49:42,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-29 06:51:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:26,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-29 06:51:26,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:26,759 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 [2023-11-29 06:51:27,065 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 [2023-11-29 06:51:27,085 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:51:27,085 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 [2023-11-29 06:51:27,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:51:27,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:51:27,188 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 18 treesize of output 10 [2023-11-29 06:51:27,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 06:51:28,205 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:51:28,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 06:51:28,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 06:51:28,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:51:28,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 06:51:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:51:28,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:51:29,845 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4316 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4316) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_4315 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4316 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4316) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4315) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 06:51:29,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [241073036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:51:29,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:51:29,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2023-11-29 06:51:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127575092] [2023-11-29 06:51:29,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:51:29,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:51:29,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:51:29,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:51:29,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=203, Unknown=2, NotChecked=58, Total=306 [2023-11-29 06:51:29,852 INFO L87 Difference]: Start difference. First operand 1508 states and 2116 transitions. Second operand has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 06:51:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:51:48,468 INFO L93 Difference]: Finished difference Result 2026 states and 2831 transitions. [2023-11-29 06:51:48,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:51:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 120 [2023-11-29 06:51:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:51:48,472 INFO L225 Difference]: With dead ends: 2026 [2023-11-29 06:51:48,472 INFO L226 Difference]: Without dead ends: 2026 [2023-11-29 06:51:48,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 227 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=423, Unknown=2, NotChecked=86, Total=600 [2023-11-29 06:51:48,473 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 507 mSDsluCounter, 4173 mSDsCounter, 0 mSdLazyCounter, 6942 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 5075 SdHoareTripleChecker+Invalid, 6962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:51:48,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 5075 Invalid, 6962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 6942 Invalid, 0 Unknown, 0 Unchecked, 18.2s Time] [2023-11-29 06:51:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-11-29 06:51:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1507. [2023-11-29 06:51:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1083 states have (on average 1.8938134810710987) internal successors, (2051), 1469 states have internal predecessors, (2051), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:51:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2114 transitions. [2023-11-29 06:51:48,503 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2114 transitions. Word has length 120 [2023-11-29 06:51:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:51:48,503 INFO L495 AbstractCegarLoop]: Abstraction has 1507 states and 2114 transitions. [2023-11-29 06:51:48,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 06:51:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2114 transitions. [2023-11-29 06:51:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 06:51:48,504 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:51:48,504 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:51:48,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-11-29 06:51:48,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-29 06:51:48,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:51:48,905 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:51:48,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:51:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash -769932828, now seen corresponding path program 1 times [2023-11-29 06:51:48,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:51:48,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798225900] [2023-11-29 06:51:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:48,907 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 [2023-11-29 06:51:48,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:51:48,908 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:51:48,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 06:51:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:49,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 06:51:49,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:49,867 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 [2023-11-29 06:51:50,086 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:51:50,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:51:50,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 06:51:50,257 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 24 treesize of output 12 [2023-11-29 06:51:51,628 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:51:51,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:51:51,774 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:51:51,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:51:51,791 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 33 treesize of output 15 [2023-11-29 06:51:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:51:51,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:51:51,945 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4756 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_4756) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 06:51:51,959 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4756 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4756) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 06:51:52,469 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4802 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4756 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4802))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4756)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 06:51:52,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:51:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798225900] [2023-11-29 06:51:52,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798225900] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:51:52,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1097759281] [2023-11-29 06:51:52,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:51:52,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:51:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:51:52,474 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:51:52,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-11-29 06:51:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:51:57,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 06:51:57,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:51:57,288 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 [2023-11-29 06:51:57,701 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:51:57,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:51:57,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:51:57,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 06:51:59,129 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:51:59,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:51:59,327 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:51:59,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:51:59,340 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 27 treesize of output 15 [2023-11-29 06:51:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:51:59,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:52:03,465 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5242 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5242) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:52:03,871 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5242 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5288 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5288))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5242)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:52:03,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1097759281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:52:03,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:52:03,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-11-29 06:52:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111018057] [2023-11-29 06:52:03,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:52:03,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:52:03,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:52:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:52:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=385, Unknown=9, NotChecked=220, Total=702 [2023-11-29 06:52:03,875 INFO L87 Difference]: Start difference. First operand 1507 states and 2114 transitions. Second operand has 19 states, 15 states have (on average 8.8) internal successors, (132), 16 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:52:08,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:52:12,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:52:16,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:52:20,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:52:32,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:52:32,007 INFO L93 Difference]: Finished difference Result 1890 states and 2622 transitions. [2023-11-29 06:52:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 06:52:32,008 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 8.8) internal successors, (132), 16 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 122 [2023-11-29 06:52:32,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:52:32,011 INFO L225 Difference]: With dead ends: 1890 [2023-11-29 06:52:32,011 INFO L226 Difference]: Without dead ends: 1890 [2023-11-29 06:52:32,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=123, Invalid=590, Unknown=9, NotChecked=270, Total=992 [2023-11-29 06:52:32,013 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 733 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 5078 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 5104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5078 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:52:32,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 4020 Invalid, 5104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5078 Invalid, 4 Unknown, 0 Unchecked, 27.8s Time] [2023-11-29 06:52:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2023-11-29 06:52:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1506. [2023-11-29 06:52:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1083 states have (on average 1.89196675900277) internal successors, (2049), 1468 states have internal predecessors, (2049), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 06:52:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2112 transitions. [2023-11-29 06:52:32,036 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2112 transitions. Word has length 122 [2023-11-29 06:52:32,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:52:32,036 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2112 transitions. [2023-11-29 06:52:32,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 8.8) internal successors, (132), 16 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:52:32,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2112 transitions. [2023-11-29 06:52:32,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 06:52:32,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:52:32,037 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:52:32,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 06:52:32,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2023-11-29 06:52:32,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 06:52:32,438 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:52:32,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:52:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -769932827, now seen corresponding path program 1 times [2023-11-29 06:52:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:52:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457376724] [2023-11-29 06:52:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:52:32,439 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 [2023-11-29 06:52:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:52:32,440 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:52:32,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 06:52:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:52:33,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-29 06:52:33,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:52:33,443 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 [2023-11-29 06:52:33,632 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 [2023-11-29 06:52:33,672 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:52:33,672 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 [2023-11-29 06:52:33,722 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 [2023-11-29 06:52:33,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 06:52:33,907 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 22 treesize of output 10 [2023-11-29 06:52:33,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 06:52:34,948 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:52:34,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:52:34,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:52:35,088 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:52:35,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:52:35,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:52:35,113 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 31 treesize of output 13 [2023-11-29 06:52:35,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 06:52:35,157 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:52:35,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:52:35,347 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5775 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 06:52:35,382 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5775 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_5775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 06:52:36,840 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5775 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5867))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5866) .cse0 v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5866) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2023-11-29 06:52:36,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:52:36,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457376724] [2023-11-29 06:52:36,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457376724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:52:36,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1535391865] [2023-11-29 06:52:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:52:36,853 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:52:36,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:52:36,854 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:52:36,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-11-29 06:52:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:52:43,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 06:52:43,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:52:43,611 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 [2023-11-29 06:52:43,618 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 [2023-11-29 06:52:44,308 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:52:44,309 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 [2023-11-29 06:52:44,321 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 [2023-11-29 06:52:44,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:52:44,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:52:44,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-29 06:52:44,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 06:52:45,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:52:46,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 42 [2023-11-29 06:52:46,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 11 [2023-11-29 06:52:46,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-29 06:52:46,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 06:52:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:52:46,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:52:46,704 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 231 treesize of output 159 [2023-11-29 06:52:49,441 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_arrayElimCell_77 (_ BitVec 32)) (v_ArrVal_6359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6359))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (or (forall ((v_prenex_6 (_ BitVec 32))) (let ((.cse0 (select (select (store .cse1 v_arrayElimCell_77 (store (select .cse1 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse2) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (bvule (bvadd .cse2 (_ bv20 32)) (select |c_#length| v_arrayElimCell_77))))))) (forall ((v_ArrVal_6359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6359) |c_ULTIMATE.start_main_~user~0#1.base|))) (let ((.cse5 (select .cse4 .cse3))) (or (forall ((v_ArrVal_6311 (_ BitVec 32)) (v_ArrVal_6310 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (store .cse4 (bvadd (_ bv16 32) .cse5) v_ArrVal_6311) .cse3)) (select |c_#length| v_ArrVal_6310))) (not (= (bvadd .cse5 (_ bv8 32)) |c_ULTIMATE.start_main_~user~0#1.offset|)) (not (bvule (bvadd .cse5 (_ bv20 32)) (select |c_#length| |c_ULTIMATE.start_main_~user~0#1.base|))))))) (forall ((v_arrayElimCell_77 (_ BitVec 32)) (v_ArrVal_6359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6359))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (.cse8 (select |c_#length| v_arrayElimCell_77))) (or (= |c_ULTIMATE.start_main_~user~0#1.base| v_arrayElimCell_77) (forall ((v_ArrVal_6311 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (select (store .cse6 v_arrayElimCell_77 (store (select .cse6 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse7) v_ArrVal_6311)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) .cse8)) (not (bvule (bvadd .cse7 (_ bv20 32)) .cse8)))))) (forall ((v_arrayElimCell_77 (_ BitVec 32)) (v_ArrVal_6359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6359))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (.cse10 (select |c_#length| v_arrayElimCell_77))) (or (forall ((v_ArrVal_6311 (_ BitVec 32)) (v_ArrVal_6310 (_ BitVec 32))) (let ((.cse9 (bvadd (_ bv8 32) (select (select (store .cse11 v_arrayElimCell_77 (store (select .cse11 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse12) v_ArrVal_6311)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (or (bvule .cse9 .cse10) (bvule .cse9 (select |c_#length| v_ArrVal_6310))))) (not (bvule (bvadd .cse12 (_ bv20 32)) .cse10)))))) (forall ((v_ArrVal_6359 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6359))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (or (= (bvadd .cse13 (_ bv8 32)) |c_ULTIMATE.start_main_~user~0#1.offset|) (forall ((v_ArrVal_6311 (_ BitVec 32)) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse15 (select |c_#length| v_arrayElimCell_77))) (or (bvule (bvadd (_ bv8 32) (select (select (store .cse14 v_arrayElimCell_77 (store (select .cse14 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse13) v_ArrVal_6311)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) .cse15) (not (bvule (bvadd .cse13 (_ bv20 32)) .cse15))))))))))) is different from false [2023-11-29 06:52:49,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1535391865] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:52:49,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:52:49,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2023-11-29 06:52:49,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99058556] [2023-11-29 06:52:49,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:52:49,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 06:52:49,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:52:49,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 06:52:49,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=965, Unknown=4, NotChecked=260, Total=1332 [2023-11-29 06:52:49,807 INFO L87 Difference]: Start difference. First operand 1506 states and 2112 transitions. Second operand has 29 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 06:53:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:53:34,237 INFO L93 Difference]: Finished difference Result 2447 states and 3381 transitions. [2023-11-29 06:53:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:53:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 122 [2023-11-29 06:53:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:53:34,240 INFO L225 Difference]: With dead ends: 2447 [2023-11-29 06:53:34,240 INFO L226 Difference]: Without dead ends: 2447 [2023-11-29 06:53:34,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=223, Invalid=1859, Unknown=4, NotChecked=364, Total=2450 [2023-11-29 06:53:34,242 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1279 mSDsluCounter, 5588 mSDsCounter, 0 mSdLazyCounter, 16510 mSolverCounterSat, 67 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 16591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 16510 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:53:34,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 6079 Invalid, 16591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 16510 Invalid, 14 Unknown, 0 Unchecked, 42.5s Time] [2023-11-29 06:53:34,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2023-11-29 06:53:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1740. [2023-11-29 06:53:34,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1309 states have (on average 1.9060351413292589) internal successors, (2495), 1696 states have internal predecessors, (2495), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 06:53:34,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2570 transitions. [2023-11-29 06:53:34,262 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2570 transitions. Word has length 122 [2023-11-29 06:53:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:53:34,262 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2570 transitions. [2023-11-29 06:53:34,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 06:53:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2570 transitions. [2023-11-29 06:53:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:53:34,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:53:34,263 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:53:34,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-11-29 06:53:34,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2023-11-29 06:53:34,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:53:34,664 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:53:34,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:53:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1169715296, now seen corresponding path program 1 times [2023-11-29 06:53:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:53:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924600460] [2023-11-29 06:53:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:53:34,665 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 [2023-11-29 06:53:34,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:53:34,666 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:53:34,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 06:53:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:53:35,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-29 06:53:35,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:53:35,734 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 [2023-11-29 06:53:35,923 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:53:35,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:53:35,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 06:53:36,085 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 24 treesize of output 12 [2023-11-29 06:53:37,450 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:53:37,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:53:37,597 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:53:37,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:53:37,702 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:53:37,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:53:37,721 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 33 treesize of output 15 [2023-11-29 06:53:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:53:37,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:53:41,946 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6815 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6815) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:53:41,964 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6814))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6815)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:53:41,981 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6814))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6815)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 06:53:42,476 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6861 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6861))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6814)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6815)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:53:42,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:53:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924600460] [2023-11-29 06:53:42,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924600460] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:53:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949800344] [2023-11-29 06:53:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:53:42,481 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:53:42,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:53:42,482 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:53:42,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-11-29 06:53:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:53:51,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 06:53:51,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:53:51,108 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 [2023-11-29 06:53:51,457 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:53:51,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:53:51,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:53:51,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 06:53:52,867 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:53:52,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:53:53,083 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:53:53,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:53:53,208 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:53:53,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:53:53,225 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 27 treesize of output 15 [2023-11-29 06:53:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:53:53,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:53:57,351 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7316))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6815)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 06:53:58,939 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6815 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7363 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7316 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7363))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7316)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6815)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 06:53:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [949800344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:53:58,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:53:58,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2023-11-29 06:53:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414270401] [2023-11-29 06:53:58,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:53:58,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:53:58,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:53:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:53:58,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=496, Unknown=15, NotChecked=306, Total=930 [2023-11-29 06:53:58,946 INFO L87 Difference]: Start difference. First operand 1740 states and 2570 transitions. Second operand has 21 states, 17 states have (on average 8.0) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:54:04,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:54:08,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:54:12,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:54:16,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:54:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:54:29,593 INFO L93 Difference]: Finished difference Result 2123 states and 3078 transitions. [2023-11-29 06:54:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:54:29,594 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 124 [2023-11-29 06:54:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:54:29,597 INFO L225 Difference]: With dead ends: 2123 [2023-11-29 06:54:29,598 INFO L226 Difference]: Without dead ends: 2123 [2023-11-29 06:54:29,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 229 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=149, Invalid=730, Unknown=15, NotChecked=366, Total=1260 [2023-11-29 06:54:29,598 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 727 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 6705 mSolverCounterSat, 23 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 5344 SdHoareTripleChecker+Invalid, 6732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6705 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:54:29,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 5344 Invalid, 6732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6705 Invalid, 4 Unknown, 0 Unchecked, 30.3s Time] [2023-11-29 06:54:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2023-11-29 06:54:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1739. [2023-11-29 06:54:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1309 states have (on average 1.9045072574484339) internal successors, (2493), 1695 states have internal predecessors, (2493), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 06:54:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2568 transitions. [2023-11-29 06:54:29,632 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2568 transitions. Word has length 124 [2023-11-29 06:54:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:54:29,632 INFO L495 AbstractCegarLoop]: Abstraction has 1739 states and 2568 transitions. [2023-11-29 06:54:29,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:54:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2568 transitions. [2023-11-29 06:54:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 06:54:29,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:54:29,634 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:54:29,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2023-11-29 06:54:29,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2023-11-29 06:54:30,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 06:54:30,034 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:54:30,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:54:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1169715295, now seen corresponding path program 1 times [2023-11-29 06:54:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:54:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783390140] [2023-11-29 06:54:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:54:30,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:54:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:54:30,037 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:54:30,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 06:54:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:54:31,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 124 conjunts are in the unsatisfiable core [2023-11-29 06:54:31,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:54:31,158 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 [2023-11-29 06:54:31,331 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 [2023-11-29 06:54:31,380 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:54:31,381 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 [2023-11-29 06:54:31,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 06:54:31,437 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 [2023-11-29 06:54:31,584 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 22 treesize of output 10 [2023-11-29 06:54:31,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 06:54:32,797 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:54:32,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:54:32,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:54:32,949 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:54:32,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:54:32,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:54:33,059 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:54:33,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:54:33,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:54:33,085 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 31 treesize of output 13 [2023-11-29 06:54:33,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 06:54:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:54:33,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:54:33,331 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 06:54:33,365 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 06:54:33,405 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7864) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7865))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7864) .cse2 v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 06:54:33,452 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7864) (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_7865))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7864) .cse3 v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 06:54:35,482 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7958))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7959) .cse1 v_ArrVal_7864) (select (select (store .cse2 .cse1 v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7867))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7959 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7867 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7958))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7865))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7959) .cse4 v_ArrVal_7864) .cse5 v_ArrVal_7867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 06:54:35,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:54:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783390140] [2023-11-29 06:54:35,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783390140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:54:35,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [534925727] [2023-11-29 06:54:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:54:35,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:54:35,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:54:35,503 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:54:35,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-11-29 06:57:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:10,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 126 conjunts are in the unsatisfiable core [2023-11-29 06:57:10,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:10,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 06:57:11,230 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 [2023-11-29 06:57:11,262 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:57:11,262 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 [2023-11-29 06:57:11,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:57:11,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:57:11,741 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 18 treesize of output 10 [2023-11-29 06:57:11,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 06:57:13,274 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:57:13,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 06:57:13,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 06:57:13,629 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:57:13,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 06:57:13,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 06:57:13,856 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:57:13,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-11-29 06:57:13,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 06:57:13,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:57:13,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-11-29 06:57:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:57:13,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:13,990 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 06:57:14,037 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 06:57:14,094 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8461))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8460) .cse0 v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8460) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-11-29 06:57:14,153 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_8461))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_8460) .cse1 v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_8460) (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-11-29 06:57:16,111 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8555 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8554 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8555))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8461))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8554) .cse0 v_ArrVal_8460) .cse1 v_ArrVal_8463) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8463 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8555 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8554 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8555))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8554) .cse6 v_ArrVal_8460) (select (select (store .cse7 .cse6 v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8463))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-11-29 06:57:16,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [534925727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:16,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:16,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2023-11-29 06:57:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740840139] [2023-11-29 06:57:16,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:16,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 06:57:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:57:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 06:57:16,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=487, Unknown=10, NotChecked=530, Total=1122 [2023-11-29 06:57:16,126 INFO L87 Difference]: Start difference. First operand 1739 states and 2568 transitions. Second operand has 22 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:57:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:57,781 INFO L93 Difference]: Finished difference Result 2431 states and 3371 transitions. [2023-11-29 06:57:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:57:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 124 [2023-11-29 06:57:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:57,785 INFO L225 Difference]: With dead ends: 2431 [2023-11-29 06:57:57,785 INFO L226 Difference]: Without dead ends: 2431 [2023-11-29 06:57:57,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 227 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=168, Invalid=918, Unknown=10, NotChecked=710, Total=1806 [2023-11-29 06:57:57,786 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1125 mSDsluCounter, 4560 mSDsCounter, 0 mSdLazyCounter, 11000 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 5178 SdHoareTripleChecker+Invalid, 11026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:57,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 5178 Invalid, 11026 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 11000 Invalid, 0 Unknown, 0 Unchecked, 40.6s Time] [2023-11-29 06:57:57,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-11-29 06:57:57,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1738. [2023-11-29 06:57:57,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1309 states have (on average 1.9029793735676088) internal successors, (2491), 1694 states have internal predecessors, (2491), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 06:57:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2566 transitions. [2023-11-29 06:57:57,808 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2566 transitions. Word has length 124 [2023-11-29 06:57:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:57,808 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2566 transitions. [2023-11-29 06:57:57,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:57:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2566 transitions. [2023-11-29 06:57:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 06:57:57,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:57,809 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:57,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:58,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-11-29 06:57:58,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 06:57:58,210 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:57:58,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1186384054, now seen corresponding path program 1 times [2023-11-29 06:57:58,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:57:58,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386925916] [2023-11-29 06:57:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:58,211 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 [2023-11-29 06:57:58,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:57:58,212 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:57:58,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-11-29 06:57:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:59,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 06:57:59,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:59,618 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 [2023-11-29 06:57:59,946 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:57:59,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:58:00,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 06:58:00,202 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 24 treesize of output 12 [2023-11-29 06:58:02,279 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:58:02,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:58:02,498 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:58:02,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:58:02,678 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:58:02,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:58:02,868 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:58:02,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 06:58:02,886 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 33 treesize of output 15 [2023-11-29 06:58:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:58:02,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:07,263 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9027 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9027) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 06:58:07,286 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9027 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9026))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9027)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 06:58:07,309 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9027 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9027)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:58:07,335 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9027 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9025))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9027)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:58:07,363 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9027 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9025))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9027)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 06:58:08,040 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9073 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9027 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9073))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9025)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9027)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:58:08,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:58:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386925916] [2023-11-29 06:58:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386925916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1061004393] [2023-11-29 06:58:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:08,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:58:08,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:58:08,045 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:58:08,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-11-29 06:58:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:22,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-29 06:58:22,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:22,747 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 [2023-11-29 06:58:23,465 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:58:23,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:58:23,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:58:23,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-29 06:58:25,780 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:58:25,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:58:26,133 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:58:26,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:58:26,376 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:58:26,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:58:26,620 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:58:26,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-11-29 06:58:26,644 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 27 treesize of output 15 [2023-11-29 06:58:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:58:26,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:26,690 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9545 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_9545) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 06:58:26,713 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9545 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9545) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 06:58:26,737 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9545 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9544))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9545)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:58:26,761 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9545 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9544))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9545)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:58:26,788 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9545 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9543 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9543))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9544)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9545)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:58:26,818 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9545 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9543 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9543))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9544)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9545)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 06:58:27,566 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9591 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9545 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9543 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9591))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9543)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9544)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9545)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 06:58:27,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1061004393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:27,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:58:27,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2023-11-29 06:58:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227859435] [2023-11-29 06:58:27,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:58:27,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 06:58:27,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:58:27,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 06:58:27,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=558, Unknown=14, NotChecked=780, Total=1482 [2023-11-29 06:58:27,575 INFO L87 Difference]: Start difference. First operand 1738 states and 2566 transitions. Second operand has 23 states, 19 states have (on average 7.368421052631579) internal successors, (140), 20 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:58:32,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:36,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:41,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:45,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:06,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:59:06,663 INFO L93 Difference]: Finished difference Result 2121 states and 3074 transitions. [2023-11-29 06:59:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:59:06,664 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 7.368421052631579) internal successors, (140), 20 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 126 [2023-11-29 06:59:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:59:06,666 INFO L225 Difference]: With dead ends: 2121 [2023-11-29 06:59:06,667 INFO L226 Difference]: Without dead ends: 2121 [2023-11-29 06:59:06,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=165, Invalid=803, Unknown=14, NotChecked=910, Total=1892 [2023-11-29 06:59:06,668 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1355 mSDsluCounter, 4456 mSDsCounter, 0 mSdLazyCounter, 6192 mSolverCounterSat, 27 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 4845 SdHoareTripleChecker+Invalid, 6223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 6192 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:59:06,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 4845 Invalid, 6223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 6192 Invalid, 4 Unknown, 0 Unchecked, 38.5s Time] [2023-11-29 06:59:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2023-11-29 06:59:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1737. [2023-11-29 06:59:06,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1309 states have (on average 1.9014514896867838) internal successors, (2489), 1693 states have internal predecessors, (2489), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 06:59:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2564 transitions. [2023-11-29 06:59:06,688 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2564 transitions. Word has length 126 [2023-11-29 06:59:06,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:59:06,689 INFO L495 AbstractCegarLoop]: Abstraction has 1737 states and 2564 transitions. [2023-11-29 06:59:06,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 7.368421052631579) internal successors, (140), 20 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:59:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2564 transitions. [2023-11-29 06:59:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 06:59:06,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:59:06,690 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:06,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-11-29 06:59:06,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-11-29 06:59:07,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 06:59:07,090 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 06:59:07,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1186384055, now seen corresponding path program 1 times [2023-11-29 06:59:07,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:59:07,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563614207] [2023-11-29 06:59:07,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:07,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:59:07,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:59:07,093 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 06:59:07,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-29 06:59:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:08,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 128 conjunts are in the unsatisfiable core [2023-11-29 06:59:08,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:59:08,739 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 [2023-11-29 06:59:09,049 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 [2023-11-29 06:59:09,122 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:59:09,122 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 [2023-11-29 06:59:09,213 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 [2023-11-29 06:59:09,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 06:59:09,440 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 22 treesize of output 10 [2023-11-29 06:59:09,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 06:59:11,137 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:59:11,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:59:11,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:59:11,379 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:59:11,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:59:11,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:59:11,558 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:59:11,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:59:11,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:59:11,735 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:59:11,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-11-29 06:59:11,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 06:59:11,772 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 31 treesize of output 13 [2023-11-29 06:59:11,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-29 06:59:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 06:59:11,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:59:12,185 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10112 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 06:59:12,241 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10112 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2023-11-29 06:59:12,356 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10109))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10110) .cse0 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_10112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10110) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2023-11-29 06:59:12,483 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10109))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10110) .cse1 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10110) (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-11-29 06:59:12,628 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10108))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10107) .cse1 v_ArrVal_10110) (select (select (store .cse2 .cse1 v_ArrVal_10109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10111))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10108))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_10109))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10107) .cse4 v_ArrVal_10110) .cse5 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_10112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 06:59:12,799 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10108))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_10109))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10107) .cse1 v_ArrVal_10110) .cse2 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_10112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10108))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10107) .cse7 v_ArrVal_10110) (select (select (store .cse8 .cse7 v_ArrVal_10109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10111))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2023-11-29 06:59:14,748 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10203))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_10108))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_10109))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10204) .cse0 v_ArrVal_10107) .cse1 v_ArrVal_10110) .cse2 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_10112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10203))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_10108))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10204) .cse8 v_ArrVal_10107) .cse9 v_ArrVal_10110) (select (select (store .cse10 .cse9 v_ArrVal_10109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10111))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2023-11-29 06:59:14,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:59:14,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563614207] [2023-11-29 06:59:14,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563614207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:59:14,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [956741222] [2023-11-29 06:59:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:14,777 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 06:59:14,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 06:59:14,778 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 06:59:14,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a4a68b-01d2-42f1-b970-64695c6081f8/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process