./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.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_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:45:27,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:45:27,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:45:27,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:45:27,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:45:27,713 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:45:27,713 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:45:27,714 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:45:27,714 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:45:27,715 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:45:27,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:45:27,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:45:27,717 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:45:27,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:45:27,718 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:45:27,718 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:45:27,719 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:45:27,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:45:27,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:45:27,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:45:27,721 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:45:27,722 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:45:27,722 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:45:27,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:45:27,723 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:45:27,723 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:45:27,724 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:45:27,724 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:45:27,725 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:45:27,725 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:45:27,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:45:27,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:45:27,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:45:27,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:45:27,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:45:27,728 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:45:27,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:45:27,728 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:45:27,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:45:27,729 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:45:27,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:45:27,729 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_881efebc-9e2e-47dd-bd26-cec3cf3da010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2023-11-29 04:45:27,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:45:27,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:45:27,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:45:27,995 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:45:27,996 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:45:27,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2023-11-29 04:45:30,850 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:45:31,106 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:45:31,107 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2023-11-29 04:45:31,124 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data/f79a1fd93/7ed9ce2f76d0487d976545d1bdea4968/FLAGd8a6762cd [2023-11-29 04:45:31,139 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data/f79a1fd93/7ed9ce2f76d0487d976545d1bdea4968 [2023-11-29 04:45:31,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:45:31,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:45:31,144 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:45:31,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:45:31,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:45:31,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:45:31" (1/1) ... [2023-11-29 04:45:31,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d46b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:31, skipping insertion in model container [2023-11-29 04:45:31,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:45:31" (1/1) ... [2023-11-29 04:45:31,208 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:45:31,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:45:31,608 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 04:45:31,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fb9b2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:31, skipping insertion in model container [2023-11-29 04:45:31,608 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:45:31,609 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:45:31,610 INFO L158 Benchmark]: Toolchain (without parser) took 466.98ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 75.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:45:31,611 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:45:31,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.72ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 75.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:45:31,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 105.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.72ms. Allocated memory is still 132.1MB. Free memory was 92.1MB in the beginning and 75.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:45:33,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:45:33,508 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:45:33,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:45:33,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:45:33,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:45:33,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:45:33,553 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:45:33,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:45:33,555 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:45:33,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:45:33,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:45:33,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:45:33,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:45:33,558 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:45:33,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:45:33,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:45:33,560 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:45:33,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:45:33,561 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:45:33,561 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:45:33,562 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:45:33,562 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:45:33,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:45:33,563 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:45:33,563 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:45:33,564 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:45:33,564 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:45:33,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:45:33,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:45:33,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:45:33,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:45:33,566 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:45:33,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:45:33,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:45:33,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:45:33,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:45:33,567 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:45:33,568 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:45:33,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:45:33,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:45:33,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:45:33,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:45:33,569 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:45:33,569 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_881efebc-9e2e-47dd-bd26-cec3cf3da010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2023-11-29 04:45:33,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:45:33,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:45:33,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:45:33,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:45:33,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:45:33,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2023-11-29 04:45:36,742 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:45:37,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:45:37,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2023-11-29 04:45:37,046 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data/e6b3e1b34/01b78e240a1e48f78f7a6c1b83b70de2/FLAGc5523feb6 [2023-11-29 04:45:37,061 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/data/e6b3e1b34/01b78e240a1e48f78f7a6c1b83b70de2 [2023-11-29 04:45:37,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:45:37,065 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:45:37,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:45:37,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:45:37,073 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:45:37,074 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,075 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fb7730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37, skipping insertion in model container [2023-11-29 04:45:37,075 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,139 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:45:37,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:45:37,614 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:45:37,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:45:37,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:45:37,706 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:45:37,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:45:37,813 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:45:37,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37 WrapperNode [2023-11-29 04:45:37,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:45:37,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:45:37,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:45:37,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:45:37,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,900 INFO L138 Inliner]: procedures = 180, calls = 187, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 634 [2023-11-29 04:45:37,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:45:37,901 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:45:37,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:45:37,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:45:37,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,977 INFO L175 MemorySlicer]: Split 163 memory accesses to 3 slices as follows [2, 5, 156]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 43 writes are split as follows [0, 1, 42]. [2023-11-29 04:45:37,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:37,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:38,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:38,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:38,021 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:38,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:38,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:45:38,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:45:38,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:45:38,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:45:38,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (1/1) ... [2023-11-29 04:45:38,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:45:38,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:45:38,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:45:38,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:45:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 04:45:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 04:45:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 04:45:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:45:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:45:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 04:45:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 04:45:38,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 04:45:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 04:45:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 04:45:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 04:45:38,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 04:45:38,108 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 04:45:38,108 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 04:45:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:45:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:45:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:45:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:45:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:45:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:45:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:45:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:45:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:45:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:45:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:45:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:45:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:45:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:45:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:45:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:45:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:45:38,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:45:38,301 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:45:38,303 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:45:38,307 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 04:45:38,359 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 04:45:38,381 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-29 04:45:41,290 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:45:41,427 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:45:41,427 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-29 04:45:41,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:45:41 BoogieIcfgContainer [2023-11-29 04:45:41,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:45:41,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:45:41,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:45:41,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:45:41,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:45:37" (1/3) ... [2023-11-29 04:45:41,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45541566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:45:41, skipping insertion in model container [2023-11-29 04:45:41,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:45:37" (2/3) ... [2023-11-29 04:45:41,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45541566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:45:41, skipping insertion in model container [2023-11-29 04:45:41,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:45:41" (3/3) ... [2023-11-29 04:45:41,436 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-1.i [2023-11-29 04:45:41,451 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:45:41,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2023-11-29 04:45:41,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:45:41,508 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;@7e79d35d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:45:41,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2023-11-29 04:45:41,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 607 states, 264 states have (on average 2.515151515151515) internal successors, (664), 601 states have internal predecessors, (664), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 04:45:41,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:41,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 04:45:41,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:41,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 33968791, now seen corresponding path program 1 times [2023-11-29 04:45:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966536193] [2023-11-29 04:45:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:41,534 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 04:45:41,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:41,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:41,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:41,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:45:41,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:41,741 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 04:45:41,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:41,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:41,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966536193] [2023-11-29 04:45:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966536193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:41,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:45:41,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628162842] [2023-11-29 04:45:41,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:41,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:45:41,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:41,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:45:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:45:41,786 INFO L87 Difference]: Start difference. First operand has 607 states, 264 states have (on average 2.515151515151515) internal successors, (664), 601 states have internal predecessors, (664), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:42,239 INFO L93 Difference]: Finished difference Result 597 states and 643 transitions. [2023-11-29 04:45:42,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:45:42,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 04:45:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:42,259 INFO L225 Difference]: With dead ends: 597 [2023-11-29 04:45:42,259 INFO L226 Difference]: Without dead ends: 596 [2023-11-29 04:45:42,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:45:42,263 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:42,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 577 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:45:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-11-29 04:45:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2023-11-29 04:45:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 259 states have (on average 2.3783783783783785) internal successors, (616), 590 states have internal predecessors, (616), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 642 transitions. [2023-11-29 04:45:42,326 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 642 transitions. Word has length 4 [2023-11-29 04:45:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:42,326 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 642 transitions. [2023-11-29 04:45:42,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 642 transitions. [2023-11-29 04:45:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 04:45:42,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:42,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 04:45:42,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:42,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:42,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:42,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:42,529 INFO L85 PathProgramCache]: Analyzing trace with hash 33968853, now seen corresponding path program 1 times [2023-11-29 04:45:42,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:42,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990772324] [2023-11-29 04:45:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:42,530 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 04:45:42,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:42,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:42,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:42,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:45:42,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:42,668 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 04:45:42,682 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 04:45:42,682 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:42,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:42,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990772324] [2023-11-29 04:45:42,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990772324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:42,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:42,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:45:42,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851193367] [2023-11-29 04:45:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:42,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:45:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:42,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:45:42,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:45:42,686 INFO L87 Difference]: Start difference. First operand 596 states and 642 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:44,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:44,013 INFO L93 Difference]: Finished difference Result 557 states and 604 transitions. [2023-11-29 04:45:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:45:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 04:45:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:44,017 INFO L225 Difference]: With dead ends: 557 [2023-11-29 04:45:44,017 INFO L226 Difference]: Without dead ends: 557 [2023-11-29 04:45:44,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:45:44,018 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 536 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:44,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 288 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:45:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-29 04:45:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 547. [2023-11-29 04:45:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 259 states have (on average 2.189189189189189) internal successors, (567), 541 states have internal predecessors, (567), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 593 transitions. [2023-11-29 04:45:44,035 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 593 transitions. Word has length 4 [2023-11-29 04:45:44,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:44,036 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 593 transitions. [2023-11-29 04:45:44,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:44,036 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 593 transitions. [2023-11-29 04:45:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 04:45:44,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:44,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 04:45:44,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:44,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:44,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:44,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:44,239 INFO L85 PathProgramCache]: Analyzing trace with hash 33968854, now seen corresponding path program 1 times [2023-11-29 04:45:44,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:44,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706339497] [2023-11-29 04:45:44,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:44,240 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 04:45:44,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:44,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:44,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:44,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:45:44,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:44,321 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 04:45:44,340 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 04:45:44,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:44,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706339497] [2023-11-29 04:45:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706339497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:44,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:45:44,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127880416] [2023-11-29 04:45:44,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:44,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:45:44,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:44,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:45:44,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:45:44,342 INFO L87 Difference]: Start difference. First operand 547 states and 593 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:46,021 INFO L93 Difference]: Finished difference Result 607 states and 657 transitions. [2023-11-29 04:45:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:45:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 04:45:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:46,026 INFO L225 Difference]: With dead ends: 607 [2023-11-29 04:45:46,026 INFO L226 Difference]: Without dead ends: 607 [2023-11-29 04:45:46,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:45:46,027 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 230 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:46,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 610 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:45:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2023-11-29 04:45:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 560. [2023-11-29 04:45:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 282 states have (on average 2.1773049645390072) internal successors, (614), 554 states have internal predecessors, (614), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 640 transitions. [2023-11-29 04:45:46,048 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 640 transitions. Word has length 4 [2023-11-29 04:45:46,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:46,048 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 640 transitions. [2023-11-29 04:45:46,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 640 transitions. [2023-11-29 04:45:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-29 04:45:46,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:46,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 04:45:46,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:45:46,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:46,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1053856852, now seen corresponding path program 1 times [2023-11-29 04:45:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:46,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678177080] [2023-11-29 04:45:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:46,251 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 04:45:46,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:46,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:46,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:46,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:45:46,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:46,323 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 04:45:46,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:46,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:46,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678177080] [2023-11-29 04:45:46,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678177080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:46,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:46,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:45:46,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245904139] [2023-11-29 04:45:46,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:46,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:45:46,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:45:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:45:46,325 INFO L87 Difference]: Start difference. First operand 560 states and 640 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 04:45:47,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:47,283 INFO L93 Difference]: Finished difference Result 1076 states and 1216 transitions. [2023-11-29 04:45:47,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:45:47,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-29 04:45:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:47,291 INFO L225 Difference]: With dead ends: 1076 [2023-11-29 04:45:47,291 INFO L226 Difference]: Without dead ends: 1076 [2023-11-29 04:45:47,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 04:45:47,293 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 512 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:47,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1206 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:45:47,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2023-11-29 04:45:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 561. [2023-11-29 04:45:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 283 states have (on average 2.1731448763250882) internal successors, (615), 555 states have internal predecessors, (615), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 641 transitions. [2023-11-29 04:45:47,317 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 641 transitions. Word has length 5 [2023-11-29 04:45:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:47,317 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 641 transitions. [2023-11-29 04:45:47,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 04:45:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 641 transitions. [2023-11-29 04:45:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 04:45:47,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:47,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:45:47,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:47,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:47,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:47,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -966567489, now seen corresponding path program 1 times [2023-11-29 04:45:47,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:47,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014982072] [2023-11-29 04:45:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:47,521 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 04:45:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:47,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:47,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:47,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:45:47,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:47,637 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 04:45:47,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:47,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:47,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014982072] [2023-11-29 04:45:47,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014982072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:47,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:47,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:45:47,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929269963] [2023-11-29 04:45:47,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:47,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:45:47,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:47,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:45:47,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:45:47,639 INFO L87 Difference]: Start difference. First operand 561 states and 641 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:48,254 INFO L93 Difference]: Finished difference Result 522 states and 601 transitions. [2023-11-29 04:45:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:45:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 04:45:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:48,260 INFO L225 Difference]: With dead ends: 522 [2023-11-29 04:45:48,260 INFO L226 Difference]: Without dead ends: 522 [2023-11-29 04:45:48,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 04:45:48,261 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 70 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:48,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 889 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:45:48,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-11-29 04:45:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2023-11-29 04:45:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 268 states have (on average 2.1455223880597014) internal successors, (575), 516 states have internal predecessors, (575), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 601 transitions. [2023-11-29 04:45:48,275 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 601 transitions. Word has length 10 [2023-11-29 04:45:48,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:48,275 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 601 transitions. [2023-11-29 04:45:48,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:45:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 601 transitions. [2023-11-29 04:45:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:45:48,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:48,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:45:48,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:48,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:48,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:48,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1158424583, now seen corresponding path program 1 times [2023-11-29 04:45:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:48,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760785549] [2023-11-29 04:45:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:48,480 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 04:45:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:48,481 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:48,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:48,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:45:48,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:48,629 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 04:45:48,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:48,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:48,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760785549] [2023-11-29 04:45:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760785549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:48,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:48,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:45:48,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282407452] [2023-11-29 04:45:48,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:48,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:45:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:45:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:45:48,631 INFO L87 Difference]: Start difference. First operand 522 states and 601 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 04:45:49,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:49,447 INFO L93 Difference]: Finished difference Result 508 states and 580 transitions. [2023-11-29 04:45:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:45:49,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 04:45:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:49,452 INFO L225 Difference]: With dead ends: 508 [2023-11-29 04:45:49,452 INFO L226 Difference]: Without dead ends: 508 [2023-11-29 04:45:49,452 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 04:45:49,453 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 58 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:49,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1290 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:45:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-29 04:45:49,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2023-11-29 04:45:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 267 states have (on average 2.0711610486891385) internal successors, (553), 501 states have internal predecessors, (553), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 579 transitions. [2023-11-29 04:45:49,468 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 579 transitions. Word has length 12 [2023-11-29 04:45:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:49,468 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 579 transitions. [2023-11-29 04:45:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 04:45:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 579 transitions. [2023-11-29 04:45:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 04:45:49,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:49,470 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] [2023-11-29 04:45:49,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:49,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:49,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1759835768, now seen corresponding path program 1 times [2023-11-29 04:45:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:49,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822610226] [2023-11-29 04:45:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:49,673 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 04:45:49,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:49,674 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:49,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:49,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:45:49,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:49,811 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 04:45:50,017 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 04:45:50,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:50,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:50,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822610226] [2023-11-29 04:45:50,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822610226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:50,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:50,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:45:50,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059481036] [2023-11-29 04:45:50,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:50,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:45:50,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:45:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:45:50,020 INFO L87 Difference]: Start difference. First operand 507 states and 579 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 04:45:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:51,990 INFO L93 Difference]: Finished difference Result 550 states and 592 transitions. [2023-11-29 04:45:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:45:51,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-11-29 04:45:51,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:51,993 INFO L225 Difference]: With dead ends: 550 [2023-11-29 04:45:51,993 INFO L226 Difference]: Without dead ends: 550 [2023-11-29 04:45:51,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 04:45:51,994 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 175 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:51,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 776 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:45:51,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-11-29 04:45:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 503. [2023-11-29 04:45:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 267 states have (on average 2.056179775280899) internal successors, (549), 497 states have internal predecessors, (549), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 575 transitions. [2023-11-29 04:45:52,007 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 575 transitions. Word has length 26 [2023-11-29 04:45:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:52,007 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 575 transitions. [2023-11-29 04:45:52,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 04:45:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 575 transitions. [2023-11-29 04:45:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 04:45:52,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:52,008 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] [2023-11-29 04:45:52,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:52,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:52,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:52,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:52,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1759835769, now seen corresponding path program 1 times [2023-11-29 04:45:52,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:52,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352955957] [2023-11-29 04:45:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:52,212 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 04:45:52,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:52,213 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:52,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:52,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:45:52,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:52,327 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 04:45:52,386 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 04:45:52,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:52,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352955957] [2023-11-29 04:45:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352955957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:45:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168973084] [2023-11-29 04:45:52,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:52,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:45:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:45:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:45:52,388 INFO L87 Difference]: Start difference. First operand 503 states and 575 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 04:45:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:53,860 INFO L93 Difference]: Finished difference Result 509 states and 582 transitions. [2023-11-29 04:45:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:45:53,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-11-29 04:45:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:53,864 INFO L225 Difference]: With dead ends: 509 [2023-11-29 04:45:53,864 INFO L226 Difference]: Without dead ends: 509 [2023-11-29 04:45:53,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 04:45:53,865 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 463 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:53,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 423 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 04:45:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-11-29 04:45:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 499. [2023-11-29 04:45:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 267 states have (on average 2.041198501872659) internal successors, (545), 493 states have internal predecessors, (545), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 571 transitions. [2023-11-29 04:45:53,874 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 571 transitions. Word has length 26 [2023-11-29 04:45:53,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:53,874 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 571 transitions. [2023-11-29 04:45:53,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 04:45:53,874 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 571 transitions. [2023-11-29 04:45:53,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 04:45:53,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:53,876 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] [2023-11-29 04:45:53,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:45:54,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:54,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:54,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:54,077 INFO L85 PathProgramCache]: Analyzing trace with hash 655180289, now seen corresponding path program 1 times [2023-11-29 04:45:54,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:54,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312273431] [2023-11-29 04:45:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:54,077 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 04:45:54,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:54,078 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:54,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:54,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:45:54,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:54,281 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 04:45:54,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:54,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:54,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312273431] [2023-11-29 04:45:54,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312273431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:54,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:54,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:45:54,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691990895] [2023-11-29 04:45:54,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:54,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:45:54,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:54,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:45:54,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:45:54,284 INFO L87 Difference]: Start difference. First operand 499 states and 571 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 04:45:54,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:54,915 INFO L93 Difference]: Finished difference Result 493 states and 561 transitions. [2023-11-29 04:45:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:45:54,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2023-11-29 04:45:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:54,920 INFO L225 Difference]: With dead ends: 493 [2023-11-29 04:45:54,920 INFO L226 Difference]: Without dead ends: 493 [2023-11-29 04:45:54,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 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 04:45:54,921 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 23 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:54,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1276 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:45:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-11-29 04:45:54,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2023-11-29 04:45:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 261 states have (on average 2.049808429118774) internal successors, (535), 487 states have internal predecessors, (535), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 561 transitions. [2023-11-29 04:45:54,930 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 561 transitions. Word has length 42 [2023-11-29 04:45:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:54,930 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 561 transitions. [2023-11-29 04:45:54,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 04:45:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 561 transitions. [2023-11-29 04:45:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 04:45:54,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:54,932 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] [2023-11-29 04:45:54,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:55,135 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:55,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1733095522, now seen corresponding path program 1 times [2023-11-29 04:45:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:55,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20615433] [2023-11-29 04:45:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:55,137 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 04:45:55,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:55,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:55,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:55,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:45:55,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:55,569 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 04:45:55,569 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:55,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:55,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20615433] [2023-11-29 04:45:55,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20615433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:55,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:55,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:45:55,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627223053] [2023-11-29 04:45:55,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:55,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:45:55,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:55,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:45:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:45:55,571 INFO L87 Difference]: Start difference. First operand 493 states and 561 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 04:45:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:56,087 INFO L93 Difference]: Finished difference Result 536 states and 604 transitions. [2023-11-29 04:45:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:45:56,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 46 [2023-11-29 04:45:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:56,092 INFO L225 Difference]: With dead ends: 536 [2023-11-29 04:45:56,092 INFO L226 Difference]: Without dead ends: 536 [2023-11-29 04:45:56,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 04:45:56,093 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 59 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:56,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 815 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:45:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-11-29 04:45:56,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2023-11-29 04:45:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 304 states have (on average 1.9013157894736843) internal successors, (578), 530 states have internal predecessors, (578), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 604 transitions. [2023-11-29 04:45:56,105 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 604 transitions. Word has length 46 [2023-11-29 04:45:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:56,105 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 604 transitions. [2023-11-29 04:45:56,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 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 04:45:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 604 transitions. [2023-11-29 04:45:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-29 04:45:56,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:56,106 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] [2023-11-29 04:45:56,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:45:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:56,307 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:56,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash 739366790, now seen corresponding path program 1 times [2023-11-29 04:45:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:56,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379594935] [2023-11-29 04:45:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:56,308 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 04:45:56,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:56,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:56,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:56,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:45:56,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:56,583 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 04:45:56,592 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 04:45:57,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:45:57,062 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 04:45:57,080 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:45:57,080 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 04:45:57,105 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 04:45:57,105 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:57,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:57,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379594935] [2023-11-29 04:45:57,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379594935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:57,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:57,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:45:57,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554873028] [2023-11-29 04:45:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:57,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:45:57,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:57,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:45:57,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:45:57,107 INFO L87 Difference]: Start difference. First operand 536 states and 604 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 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 04:45:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:45:58,438 INFO L93 Difference]: Finished difference Result 508 states and 577 transitions. [2023-11-29 04:45:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:45:58,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2023-11-29 04:45:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:45:58,441 INFO L225 Difference]: With dead ends: 508 [2023-11-29 04:45:58,441 INFO L226 Difference]: Without dead ends: 508 [2023-11-29 04:45:58,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 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 04:45:58,442 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 354 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:45:58,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 250 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:45:58,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-29 04:45:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 475. [2023-11-29 04:45:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 281 states have (on average 1.7188612099644127) internal successors, (483), 469 states have internal predecessors, (483), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:45:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 509 transitions. [2023-11-29 04:45:58,451 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 509 transitions. Word has length 49 [2023-11-29 04:45:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:45:58,451 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 509 transitions. [2023-11-29 04:45:58,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 4 states have internal predecessors, (49), 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 04:45:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 509 transitions. [2023-11-29 04:45:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:45:58,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:45:58,453 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] [2023-11-29 04:45:58,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:58,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:58,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:45:58,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:45:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash -963069239, now seen corresponding path program 1 times [2023-11-29 04:45:58,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:45:58,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266450837] [2023-11-29 04:45:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:45:58,654 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 04:45:58,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:45:58,655 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:58,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:45:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:45:58,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:45:58,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:45:58,857 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 04:45:58,876 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 04:45:58,899 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 04:45:58,910 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 04:45:58,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:45:58,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:45:58,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266450837] [2023-11-29 04:45:58,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266450837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:45:58,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:45:58,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:45:58,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216088194] [2023-11-29 04:45:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:45:58,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:45:58,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:45:58,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:45:58,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:45:58,912 INFO L87 Difference]: Start difference. First operand 475 states and 509 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 04:46:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:00,625 INFO L93 Difference]: Finished difference Result 474 states and 508 transitions. [2023-11-29 04:46:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:46:00,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2023-11-29 04:46:00,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:00,628 INFO L225 Difference]: With dead ends: 474 [2023-11-29 04:46:00,628 INFO L226 Difference]: Without dead ends: 474 [2023-11-29 04:46:00,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:00,629 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 3 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:00,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1069 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 04:46:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-29 04:46:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-11-29 04:46:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 468 states have internal predecessors, (482), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:46:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 508 transitions. [2023-11-29 04:46:00,641 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 508 transitions. Word has length 53 [2023-11-29 04:46:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:00,642 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 508 transitions. [2023-11-29 04:46:00,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 04:46:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 508 transitions. [2023-11-29 04:46:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:46:00,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:00,643 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] [2023-11-29 04:46:00,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:46:00,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:00,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:46:00,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:00,844 INFO L85 PathProgramCache]: Analyzing trace with hash -963069238, now seen corresponding path program 1 times [2023-11-29 04:46:00,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:00,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504846053] [2023-11-29 04:46:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:00,845 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 04:46:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:00,845 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:00,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:01,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:46:01,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:01,053 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 04:46:01,078 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 04:46:01,087 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 04:46:01,127 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 04:46:01,143 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 04:46:01,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:46:01,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504846053] [2023-11-29 04:46:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504846053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:01,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:46:01,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757881029] [2023-11-29 04:46:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:01,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:46:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:46:01,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:46:01,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:46:01,146 INFO L87 Difference]: Start difference. First operand 474 states and 508 transitions. Second operand has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 04:46:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:03,234 INFO L93 Difference]: Finished difference Result 473 states and 507 transitions. [2023-11-29 04:46:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:46:03,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2023-11-29 04:46:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:03,239 INFO L225 Difference]: With dead ends: 473 [2023-11-29 04:46:03,239 INFO L226 Difference]: Without dead ends: 473 [2023-11-29 04:46:03,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:46:03,239 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:03,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1079 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:46:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-29 04:46:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2023-11-29 04:46:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 280 states have (on average 1.7178571428571427) internal successors, (481), 467 states have internal predecessors, (481), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:46:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 507 transitions. [2023-11-29 04:46:03,248 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 507 transitions. Word has length 53 [2023-11-29 04:46:03,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:03,248 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 507 transitions. [2023-11-29 04:46:03,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.25) internal successors, (53), 5 states have internal predecessors, (53), 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 04:46:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 507 transitions. [2023-11-29 04:46:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 04:46:03,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:03,249 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 04:46:03,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:46:03,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:03,450 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:46:03,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:03,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1959399821, now seen corresponding path program 1 times [2023-11-29 04:46:03,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:03,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174720671] [2023-11-29 04:46:03,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:03,451 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 04:46:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:03,452 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:03,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:03,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:46:03,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:03,702 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 04:46:03,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:46:03,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174720671] [2023-11-29 04:46:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174720671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:46:03,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:46:03,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:46:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205113852] [2023-11-29 04:46:03,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:46:03,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:46:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:46:03,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:46:03,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:46:03,704 INFO L87 Difference]: Start difference. First operand 473 states and 507 transitions. Second operand has 4 states, 3 states have (on average 19.0) 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 04:46:04,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:04,323 INFO L93 Difference]: Finished difference Result 475 states and 510 transitions. [2023-11-29 04:46:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:46:04,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) 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 04:46:04,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:04,328 INFO L225 Difference]: With dead ends: 475 [2023-11-29 04:46:04,328 INFO L226 Difference]: Without dead ends: 475 [2023-11-29 04:46:04,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 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 04:46:04,329 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:04,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1215 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:46:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-29 04:46:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2023-11-29 04:46:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 281 states have (on average 1.7188612099644127) internal successors, (483), 469 states have internal predecessors, (483), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:46:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 510 transitions. [2023-11-29 04:46:04,341 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 510 transitions. Word has length 59 [2023-11-29 04:46:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:04,341 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 510 transitions. [2023-11-29 04:46:04,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) 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 04:46:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 510 transitions. [2023-11-29 04:46:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-29 04:46:04,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:04,343 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] [2023-11-29 04:46:04,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:04,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:04,543 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:46:04,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 750252312, now seen corresponding path program 1 times [2023-11-29 04:46:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123330741] [2023-11-29 04:46:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:46:04,545 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 04:46:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:04,546 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:04,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:46:04,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:46:04,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:04,815 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 04:46:04,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:04,886 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 04:46:04,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:04,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123330741] [2023-11-29 04:46:04,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123330741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:04,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:46:04,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:46:04,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757517077] [2023-11-29 04:46:04,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:04,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:46:04,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:46:04,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:46:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:46:04,889 INFO L87 Difference]: Start difference. First operand 475 states and 510 transitions. Second operand has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:05,634 INFO L93 Difference]: Finished difference Result 484 states and 524 transitions. [2023-11-29 04:46:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:46:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 60 [2023-11-29 04:46:05,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:05,638 INFO L225 Difference]: With dead ends: 484 [2023-11-29 04:46:05,638 INFO L226 Difference]: Without dead ends: 484 [2023-11-29 04:46:05,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:46:05,639 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 7 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:05,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1213 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:46:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2023-11-29 04:46:05,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 483. [2023-11-29 04:46:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 288 states have (on average 1.7222222222222223) internal successors, (496), 476 states have internal predecessors, (496), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:46:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 523 transitions. [2023-11-29 04:46:05,652 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 523 transitions. Word has length 60 [2023-11-29 04:46:05,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:05,653 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 523 transitions. [2023-11-29 04:46:05,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 10.166666666666666) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 523 transitions. [2023-11-29 04:46:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 04:46:05,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:05,654 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] [2023-11-29 04:46:05,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:05,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:05,855 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:46:05,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:05,855 INFO L85 PathProgramCache]: Analyzing trace with hash -250930099, now seen corresponding path program 2 times [2023-11-29 04:46:05,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:05,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405253269] [2023-11-29 04:46:05,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:46:05,856 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 04:46:05,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:05,856 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:05,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:06,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:46:06,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:46:06,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:46:06,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:06,293 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 04:46:06,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:06,441 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 04:46:06,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:06,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405253269] [2023-11-29 04:46:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405253269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:06,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:46:06,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 04:46:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962386613] [2023-11-29 04:46:06,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:46:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:46:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:46:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:46:06,443 INFO L87 Difference]: Start difference. First operand 483 states and 523 transitions. Second operand has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:08,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:08,544 INFO L93 Difference]: Finished difference Result 498 states and 545 transitions. [2023-11-29 04:46:08,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 04:46:08,545 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2023-11-29 04:46:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:08,547 INFO L225 Difference]: With dead ends: 498 [2023-11-29 04:46:08,547 INFO L226 Difference]: Without dead ends: 496 [2023-11-29 04:46:08,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:46:08,548 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 12 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:08,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3231 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:46:08,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2023-11-29 04:46:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 492. [2023-11-29 04:46:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 297 states have (on average 1.7104377104377104) internal successors, (508), 485 states have internal predecessors, (508), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:46:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 535 transitions. [2023-11-29 04:46:08,558 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 535 transitions. Word has length 63 [2023-11-29 04:46:08,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:08,558 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 535 transitions. [2023-11-29 04:46:08,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.583333333333333) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 535 transitions. [2023-11-29 04:46:08,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-29 04:46:08,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:08,559 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] [2023-11-29 04:46:08,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Forceful destruction successful, exit code 0 [2023-11-29 04:46:08,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:08,760 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:46:08,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:08,760 INFO L85 PathProgramCache]: Analyzing trace with hash 355293293, now seen corresponding path program 3 times [2023-11-29 04:46:08,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:08,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153577824] [2023-11-29 04:46:08,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:46:08,761 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 04:46:08,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:08,762 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:08,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:09,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:46:09,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:46:09,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:46:09,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:09,522 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 04:46:09,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:10,191 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 04:46:10,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:10,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153577824] [2023-11-29 04:46:10,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153577824] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:10,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:46:10,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 04:46:10,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970224986] [2023-11-29 04:46:10,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:10,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 04:46:10,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:46:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 04:46:10,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-29 04:46:10,194 INFO L87 Difference]: Start difference. First operand 492 states and 535 transitions. Second operand has 26 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:14,405 INFO L93 Difference]: Finished difference Result 522 states and 585 transitions. [2023-11-29 04:46:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 04:46:14,406 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2023-11-29 04:46:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:14,409 INFO L225 Difference]: With dead ends: 522 [2023-11-29 04:46:14,409 INFO L226 Difference]: Without dead ends: 519 [2023-11-29 04:46:14,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 04:46:14,411 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 25 mSDsluCounter, 4833 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5237 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:14,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5237 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 04:46:14,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-29 04:46:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 510. [2023-11-29 04:46:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 315 states have (on average 1.6857142857142857) internal successors, (531), 503 states have internal predecessors, (531), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:46:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 558 transitions. [2023-11-29 04:46:14,422 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 558 transitions. Word has length 69 [2023-11-29 04:46:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:14,422 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 558 transitions. [2023-11-29 04:46:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 26 states have internal predecessors, (79), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 558 transitions. [2023-11-29 04:46:14,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-29 04:46:14,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:14,423 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] [2023-11-29 04:46:14,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:46:14,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:14,624 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:46:14,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:14,624 INFO L85 PathProgramCache]: Analyzing trace with hash 830671021, now seen corresponding path program 4 times [2023-11-29 04:46:14,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:14,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866407285] [2023-11-29 04:46:14,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:46:14,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:46:14,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:14,626 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:14,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:14,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:46:14,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:46:14,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:46:14,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:15,259 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 04:46:15,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:16,746 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 04:46:16,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:16,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866407285] [2023-11-29 04:46:16,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866407285] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:46:16,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:46:16,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2023-11-29 04:46:16,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754718554] [2023-11-29 04:46:16,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:46:16,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 04:46:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:46:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 04:46:16,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 04:46:16,750 INFO L87 Difference]: Start difference. First operand 510 states and 558 transitions. Second operand has 50 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 50 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:46:27,702 INFO L93 Difference]: Finished difference Result 567 states and 647 transitions. [2023-11-29 04:46:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-29 04:46:27,703 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 50 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-29 04:46:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:46:27,707 INFO L225 Difference]: With dead ends: 567 [2023-11-29 04:46:27,707 INFO L226 Difference]: Without dead ends: 565 [2023-11-29 04:46:27,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2023-11-29 04:46:27,711 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 48 mSDsluCounter, 9695 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 10100 SdHoareTripleChecker+Invalid, 3802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:46:27,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 10100 Invalid, 3802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-29 04:46:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-11-29 04:46:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 544. [2023-11-29 04:46:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 349 states have (on average 1.653295128939828) internal successors, (577), 537 states have internal predecessors, (577), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:46:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 604 transitions. [2023-11-29 04:46:27,724 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 604 transitions. Word has length 81 [2023-11-29 04:46:27,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:46:27,725 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 604 transitions. [2023-11-29 04:46:27,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 2.1458333333333335) internal successors, (103), 50 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:46:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 604 transitions. [2023-11-29 04:46:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 04:46:27,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:46:27,726 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] [2023-11-29 04:46:27,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:46:27,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:27,927 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:46:27,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:46:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash 894166989, now seen corresponding path program 5 times [2023-11-29 04:46:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:46:27,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752288676] [2023-11-29 04:46:27,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:46:27,928 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 04:46:27,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:46:27,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:27,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:46:29,273 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 04:46:29,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:46:29,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 04:46:29,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:46:29,324 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 04:46:29,325 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 22 [2023-11-29 04:46:29,647 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2023-11-29 04:46:29,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2023-11-29 04:46:29,716 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 04:46:29,878 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 42 treesize of output 24 [2023-11-29 04:46:32,347 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:46:32,347 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 59 [2023-11-29 04:46:32,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2023-11-29 04:46:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:46:32,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:46:36,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:46:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752288676] [2023-11-29 04:46:36,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752288676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:46:36,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1523910764] [2023-11-29 04:46:36,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:46:36,992 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:46:36,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:46:36,993 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:46:36,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-11-29 04:47:45,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 04:47:45,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:47:45,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 04:47:45,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:47:45,837 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:47:45,838 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 04:47:46,330 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 04:47:46,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 04:47:46,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 04:47:47,099 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:47:47,100 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 41 [2023-11-29 04:47:47,185 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 35 treesize of output 19 [2023-11-29 04:47:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:47:47,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:47:47,655 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-11-29 04:47:47,656 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 25 treesize of output 24 [2023-11-29 04:47:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1523910764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:47:47,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:47:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2023-11-29 04:47:47,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376541463] [2023-11-29 04:47:47,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:47:47,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 04:47:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:47:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 04:47:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=480, Unknown=11, NotChecked=0, Total=552 [2023-11-29 04:47:47,747 INFO L87 Difference]: Start difference. First operand 544 states and 604 transitions. Second operand has 20 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 18 states have internal predecessors, (118), 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 04:47:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:47:56,449 INFO L93 Difference]: Finished difference Result 1007 states and 1122 transitions. [2023-11-29 04:47:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 04:47:56,449 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 18 states have internal predecessors, (118), 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 103 [2023-11-29 04:47:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:47:56,453 INFO L225 Difference]: With dead ends: 1007 [2023-11-29 04:47:56,453 INFO L226 Difference]: Without dead ends: 1003 [2023-11-29 04:47:56,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=278, Invalid=1780, Unknown=12, NotChecked=0, Total=2070 [2023-11-29 04:47:56,455 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 2154 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 3801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:47:56,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 2504 Invalid, 3801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-11-29 04:47:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2023-11-29 04:47:56,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 543. [2023-11-29 04:47:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 349 states have (on average 1.6389684813753582) internal successors, (572), 536 states have internal predecessors, (572), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:47:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 599 transitions. [2023-11-29 04:47:56,468 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 599 transitions. Word has length 103 [2023-11-29 04:47:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:47:56,469 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 599 transitions. [2023-11-29 04:47:56,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.9411764705882355) internal successors, (118), 18 states have internal predecessors, (118), 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 04:47:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 599 transitions. [2023-11-29 04:47:56,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 04:47:56,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:47:56,470 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] [2023-11-29 04:47:56,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Forceful destruction successful, exit code 0 [2023-11-29 04:47:56,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-11-29 04:47:56,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:47:56,870 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:47:56,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:47:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash 894166990, now seen corresponding path program 1 times [2023-11-29 04:47:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:47:56,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623842065] [2023-11-29 04:47:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:47:56,872 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 04:47:56,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:47:56,873 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:47:56,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:47:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:47:57,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 108 conjunts are in the unsatisfiable core [2023-11-29 04:47:57,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:47:57,575 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 04:47:57,835 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 04:47:57,851 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:47:57,852 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 04:47:57,887 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 04:47:57,892 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 04:47:57,996 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 04:47:58,000 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 04:47:58,671 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:47:58,671 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 04:47:58,680 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 04:47:58,740 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 04:47:58,745 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 04:47:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:47:58,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:48:00,078 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2627 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2627) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2626 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2626) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2023-11-29 04:48:00,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:48:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623842065] [2023-11-29 04:48:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623842065] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:48:00,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1794222884] [2023-11-29 04:48:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:48:00,085 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:48:00,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:48:00,086 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:48:00,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-11-29 04:49:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:38,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-29 04:49:38,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:38,715 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 04:49:38,966 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:49:38,967 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 04:49:38,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2023-11-29 04:49:38,992 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 04:49:38,998 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 04:49:39,054 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 04:49:39,058 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 04:49:39,725 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:49:39,725 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 04:49:39,734 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 04:49:39,782 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 04:49:39,788 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 04:49:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:49:39,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:41,016 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3162 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3162) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3163 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3162 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3162) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3163) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 04:49:41,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1794222884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:41,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:49:41,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 04:49:41,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341280447] [2023-11-29 04:49:41,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:49:41,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:49:41,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:49:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:49:41,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=88, Unknown=2, NotChecked=38, Total=156 [2023-11-29 04:49:41,023 INFO L87 Difference]: Start difference. First operand 543 states and 599 transitions. Second operand has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 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 04:49:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:49:45,884 INFO L93 Difference]: Finished difference Result 552 states and 609 transitions. [2023-11-29 04:49:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:49:45,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 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 103 [2023-11-29 04:49:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:49:45,888 INFO L225 Difference]: With dead ends: 552 [2023-11-29 04:49:45,888 INFO L226 Difference]: Without dead ends: 552 [2023-11-29 04:49:45,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=164, Unknown=2, NotChecked=54, Total=272 [2023-11-29 04:49:45,888 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 293 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:49:45,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1019 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-29 04:49:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-11-29 04:49:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 542. [2023-11-29 04:49:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 349 states have (on average 1.6361031518624642) internal successors, (571), 535 states have internal predecessors, (571), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:49:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 598 transitions. [2023-11-29 04:49:45,898 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 598 transitions. Word has length 103 [2023-11-29 04:49:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:49:45,899 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 598 transitions. [2023-11-29 04:49:45,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 9 states have internal predecessors, (59), 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 04:49:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 598 transitions. [2023-11-29 04:49:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 04:49:45,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:49:45,900 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] [2023-11-29 04:49:45,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:49:46,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-11-29 04:49:46,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:49:46,301 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:49:46,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash 301801238, now seen corresponding path program 1 times [2023-11-29 04:49:46,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:49:46,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765262647] [2023-11-29 04:49:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:46,302 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 04:49:46,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:49:46,303 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:49:46,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:49:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:47,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 04:49:47,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:47,033 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 04:49:47,159 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 04:49:47,159 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 04:49:47,197 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 04:49:47,313 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 04:49:48,175 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:49:48,175 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 04:49:48,313 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:49:48,313 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 04:49:48,328 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 04:49:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:49:48,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:49:52,477 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3569 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3569) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:49:52,940 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3615 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3569 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3615))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3569)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:49:52,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:49:52,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765262647] [2023-11-29 04:49:52,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765262647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:49:52,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [610528649] [2023-11-29 04:49:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:52,943 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:49:52,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:49:52,944 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:49:52,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-11-29 04:49:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:56,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 04:49:56,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:49:56,451 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:49:56,452 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 04:49:56,874 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 04:49:56,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 04:49:56,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 04:49:57,584 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:49:57,585 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 41 [2023-11-29 04:49:57,743 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:49:57,743 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 41 [2023-11-29 04:49:57,755 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 35 treesize of output 19 [2023-11-29 04:49:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:49:57,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:02,239 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-11-29 04:50:02,239 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 37 treesize of output 36 [2023-11-29 04:50:02,249 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3569 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4066 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4066))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3569)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2023-11-29 04:50:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [610528649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:02,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:50:02,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 20 [2023-11-29 04:50:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164347200] [2023-11-29 04:50:02,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:50:02,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 04:50:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:50:02,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 04:50:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=482, Unknown=6, NotChecked=138, Total=702 [2023-11-29 04:50:02,253 INFO L87 Difference]: Start difference. First operand 542 states and 598 transitions. Second operand has 21 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 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 04:50:11,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:50:11,546 INFO L93 Difference]: Finished difference Result 999 states and 1110 transitions. [2023-11-29 04:50:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:50:11,547 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 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 105 [2023-11-29 04:50:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:50:11,552 INFO L225 Difference]: With dead ends: 999 [2023-11-29 04:50:11,552 INFO L226 Difference]: Without dead ends: 999 [2023-11-29 04:50:11,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=197, Invalid=1215, Unknown=6, NotChecked=222, Total=1640 [2023-11-29 04:50:11,554 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1310 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 4021 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:50:11,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 2857 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4021 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-29 04:50:11,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2023-11-29 04:50:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 541. [2023-11-29 04:50:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 349 states have (on average 1.6332378223495703) internal successors, (570), 534 states have internal predecessors, (570), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:50:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 597 transitions. [2023-11-29 04:50:11,566 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 597 transitions. Word has length 105 [2023-11-29 04:50:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:50:11,567 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 597 transitions. [2023-11-29 04:50:11,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 6.777777777777778) internal successors, (122), 20 states have internal predecessors, (122), 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 04:50:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 597 transitions. [2023-11-29 04:50:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 04:50:11,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:50:11,568 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] [2023-11-29 04:50:11,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-11-29 04:50:11,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:50:11,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:50:11,969 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:50:11,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash 301801239, now seen corresponding path program 1 times [2023-11-29 04:50:11,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:50:11,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523000673] [2023-11-29 04:50:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:11,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 04:50:11,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:50:11,971 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:50:11,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:50:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:12,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-29 04:50:12,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:50:12,791 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 04:50:12,886 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 04:50:12,899 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:50:12,899 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 04:50:12,922 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 04:50:12,926 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 04:50:13,018 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 04:50:13,022 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 04:50:13,693 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:50:13,693 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 04:50:13,704 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 04:50:13,812 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:50:13,813 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 04:50:13,822 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 04:50:13,840 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 04:50:13,847 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 04:50:13,875 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:50:13,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:50:14,023 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4517 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4518 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4517) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4518) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4517 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4517) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-11-29 04:50:14,059 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4517 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4517) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_4517 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4518 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4517) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_4518) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 04:50:15,299 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4517 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4610 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4609 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4610) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4609) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4517) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_4517 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4518 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4610 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4609 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4609))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4610) .cse2 v_ArrVal_4517) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4518) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 04:50:15,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:50:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523000673] [2023-11-29 04:50:15,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523000673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:50:15,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1242288594] [2023-11-29 04:50:15,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:15,312 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:50:15,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:50:15,313 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:50:15,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-11-29 04:52:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:20,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-29 04:52:20,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:20,969 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 04:52:21,335 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 04:52:21,357 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:52:21,358 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 04:52:21,440 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 04:52:21,451 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 04:52:21,632 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 04:52:21,637 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 04:52:22,409 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:52:22,410 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 04:52:22,420 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 04:52:22,610 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:52:22,610 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 04:52:22,616 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 04:52:22,640 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 04:52:22,648 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 04:52:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:52:22,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:22,709 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5061 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5062 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5062) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 04:52:22,763 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5061 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5062 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_5062) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 04:52:24,162 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5153) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5062 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5154))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5153) .cse2 v_ArrVal_5061) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5062) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 04:52:24,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1242288594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:52:24,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:52:24,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-11-29 04:52:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423772198] [2023-11-29 04:52:24,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:52:24,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 04:52:24,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:52:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 04:52:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=228, Unknown=6, NotChecked=210, Total=506 [2023-11-29 04:52:24,175 INFO L87 Difference]: Start difference. First operand 541 states and 597 transitions. Second operand has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:52:32,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:52:32,259 INFO L93 Difference]: Finished difference Result 550 states and 607 transitions. [2023-11-29 04:52:32,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:52:32,260 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 105 [2023-11-29 04:52:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:52:32,262 INFO L225 Difference]: With dead ends: 550 [2023-11-29 04:52:32,262 INFO L226 Difference]: Without dead ends: 550 [2023-11-29 04:52:32,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=105, Invalid=375, Unknown=6, NotChecked=270, Total=756 [2023-11-29 04:52:32,263 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 367 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:52:32,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1258 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-11-29 04:52:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-11-29 04:52:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 540. [2023-11-29 04:52:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 349 states have (on average 1.6303724928366763) internal successors, (569), 533 states have internal predecessors, (569), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:52:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 596 transitions. [2023-11-29 04:52:32,271 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 596 transitions. Word has length 105 [2023-11-29 04:52:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:52:32,272 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 596 transitions. [2023-11-29 04:52:32,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 9.666666666666666) internal successors, (116), 15 states have internal predecessors, (116), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:52:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 596 transitions. [2023-11-29 04:52:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 04:52:32,273 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:52:32,273 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] [2023-11-29 04:52:32,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2023-11-29 04:52:32,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:52:32,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:52:32,673 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:52:32,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:32,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2026007943, now seen corresponding path program 1 times [2023-11-29 04:52:32,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:52:32,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156193722] [2023-11-29 04:52:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:32,675 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 04:52:32,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:52:32,675 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:52:32,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:52:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:33,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-29 04:52:33,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:52:33,591 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 04:52:33,705 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 04:52:33,706 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 04:52:33,737 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 04:52:33,831 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 04:52:34,643 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:52:34,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 04:52:34,755 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:52:34,755 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 04:52:34,844 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:52:34,844 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 04:52:34,862 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 04:52:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:52:34,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:52:39,024 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5576 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5576) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-11-29 04:52:39,037 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5576 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5575))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5576)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:52:39,051 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5576 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5575))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5576)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 04:52:39,429 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5575 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5576 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5622 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5622))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5575)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5576)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:52:39,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:52:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156193722] [2023-11-29 04:52:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156193722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:52:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1427834752] [2023-11-29 04:52:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:39,432 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:52:39,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:52:39,433 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:52:39,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 04:53:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:05,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 04:53:05,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:53:05,243 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:53:05,244 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 04:53:05,771 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 04:53:05,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 04:53:05,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 04:53:06,580 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:53:06,581 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 41 [2023-11-29 04:53:06,784 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:53:06,784 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 41 [2023-11-29 04:53:06,904 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:53:06,904 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 41 [2023-11-29 04:53:06,922 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 35 treesize of output 19 [2023-11-29 04:53:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:53:06,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:53:06,994 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2023-11-29 04:53:07,009 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6043) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-11-29 04:53:07,025 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6042))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6043)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:53:07,040 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6042))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6043)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:53:07,512 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2023-11-29 04:53:07,513 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 61 treesize of output 60 [2023-11-29 04:53:07,525 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6089))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6042)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6043)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-11-29 04:53:07,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1427834752] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:53:07,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:53:07,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 22 [2023-11-29 04:53:07,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468558985] [2023-11-29 04:53:07,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:53:07,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 04:53:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:53:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 04:53:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=578, Unknown=10, NotChecked=504, Total=1190 [2023-11-29 04:53:07,531 INFO L87 Difference]: Start difference. First operand 540 states and 596 transitions. Second operand has 23 states, 20 states have (on average 6.3) internal successors, (126), 22 states have internal predecessors, (126), 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 04:53:19,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:53:19,368 INFO L93 Difference]: Finished difference Result 995 states and 1106 transitions. [2023-11-29 04:53:19,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 04:53:19,369 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.3) internal successors, (126), 22 states have internal predecessors, (126), 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 107 [2023-11-29 04:53:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:53:19,373 INFO L225 Difference]: With dead ends: 995 [2023-11-29 04:53:19,373 INFO L226 Difference]: Without dead ends: 995 [2023-11-29 04:53:19,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=232, Invalid=1434, Unknown=10, NotChecked=774, Total=2450 [2023-11-29 04:53:19,375 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 1294 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 4677 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 4764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:53:19,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 3214 Invalid, 4764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4677 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-11-29 04:53:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-29 04:53:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 539. [2023-11-29 04:53:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 349 states have (on average 1.6275071633237823) internal successors, (568), 532 states have internal predecessors, (568), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:53:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 595 transitions. [2023-11-29 04:53:19,386 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 595 transitions. Word has length 107 [2023-11-29 04:53:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:53:19,386 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 595 transitions. [2023-11-29 04:53:19,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.3) internal successors, (126), 22 states have internal predecessors, (126), 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 04:53:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 595 transitions. [2023-11-29 04:53:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 04:53:19,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:53:19,387 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] [2023-11-29 04:53:19,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:53:19,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-11-29 04:53:19,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:53:19,788 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:53:19,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:19,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2026007942, now seen corresponding path program 1 times [2023-11-29 04:53:19,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:53:19,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504003589] [2023-11-29 04:53:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:19,789 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 04:53:19,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:53:19,790 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:53:19,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:53:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:20,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 113 conjunts are in the unsatisfiable core [2023-11-29 04:53:20,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:53:20,756 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 04:53:20,885 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 04:53:20,899 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:53:20,899 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 04:53:20,927 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 04:53:20,936 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 04:53:21,044 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 04:53:21,048 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 04:53:21,788 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:53:21,788 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 04:53:21,799 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 04:53:21,924 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:53:21,924 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 04:53:21,933 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 04:53:22,026 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:53:22,026 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 04:53:22,035 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 04:53:22,050 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 04:53:22,055 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 04:53:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:53:22,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:53:22,259 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6558 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6557 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6557) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6558) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_6557 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6557) |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 04:53:22,292 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6557 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6557) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6558 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6557 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6557) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6558) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 04:53:28,304 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6649 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6555 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6556 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6557 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6650 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6649))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6650) .cse1 v_ArrVal_6556) (select (select (store .cse2 .cse1 v_ArrVal_6555) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6557))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6558 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6649 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6555 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6556 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6557 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6650 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6649))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6555))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6650) .cse4 v_ArrVal_6556) .cse5 v_ArrVal_6557) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6558) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 04:53:28,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:53:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504003589] [2023-11-29 04:53:28,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504003589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:53:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1418082371] [2023-11-29 04:53:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:28,323 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:53:28,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:53:28,324 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:53:28,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-29 04:54:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:17,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 116 conjunts are in the unsatisfiable core [2023-11-29 04:54:17,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:54:17,232 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 04:54:17,803 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 04:54:17,844 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:54:17,845 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 04:54:17,969 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 04:54:17,986 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 04:54:18,326 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 04:54:18,333 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 04:54:19,507 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:54:19,508 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 04:54:19,517 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 04:54:19,831 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:54:19,832 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 04:54:19,845 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 04:54:20,060 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:54:20,060 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 50 treesize of output 45 [2023-11-29 04:54:20,069 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 04:54:20,097 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 04:54:20,110 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 04:54:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:54:20,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:54:20,195 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_7119 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7119) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 04:54:20,248 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7119 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7119) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 04:54:20,321 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7119 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7117 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7116))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7117) .cse0 v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7119) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7117 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7117) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2023-11-29 04:54:20,450 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7119 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7117 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7116))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7117) .cse1 v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7119) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7117 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7117) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7118) |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 04:54:22,929 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7119 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7117 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7210 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7211 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7211))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7116))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7210) .cse0 v_ArrVal_7117) .cse1 v_ArrVal_7118) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7119) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7117 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7118 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7210 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7211 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7211))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7210) .cse6 v_ArrVal_7117) (select (select (store .cse7 .cse6 v_ArrVal_7116) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7118))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-11-29 04:54:22,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1418082371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:54:22,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:54:22,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-29 04:54:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259144664] [2023-11-29 04:54:22,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:54:22,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:54:22,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:54:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:54:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=341, Unknown=21, NotChecked=360, Total=812 [2023-11-29 04:54:22,945 INFO L87 Difference]: Start difference. First operand 539 states and 595 transitions. Second operand has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:54:37,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:54:37,965 INFO L93 Difference]: Finished difference Result 548 states and 605 transitions. [2023-11-29 04:54:37,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:54:37,966 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2023-11-29 04:54:37,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:54:37,969 INFO L225 Difference]: With dead ends: 548 [2023-11-29 04:54:37,969 INFO L226 Difference]: Without dead ends: 548 [2023-11-29 04:54:37,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=149, Invalid=564, Unknown=21, NotChecked=456, Total=1190 [2023-11-29 04:54:37,970 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 358 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 3694 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:54:37,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1494 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3694 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2023-11-29 04:54:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-29 04:54:37,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 538. [2023-11-29 04:54:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 349 states have (on average 1.6246418338108883) internal successors, (567), 531 states have internal predecessors, (567), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:54:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 594 transitions. [2023-11-29 04:54:37,983 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 594 transitions. Word has length 107 [2023-11-29 04:54:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:54:37,983 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 594 transitions. [2023-11-29 04:54:37,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 8.571428571428571) internal successors, (120), 17 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:54:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 594 transitions. [2023-11-29 04:54:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 04:54:37,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:54:37,985 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] [2023-11-29 04:54:37,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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)] Ended with exit code 0 [2023-11-29 04:54:38,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-11-29 04:54:38,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 04:54:38,385 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:54:38,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:38,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1372675210, now seen corresponding path program 1 times [2023-11-29 04:54:38,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:54:38,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038058068] [2023-11-29 04:54:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:38,387 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 04:54:38,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:54:38,388 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:54:38,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:54:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:39,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 04:54:39,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:54:39,502 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 04:54:39,786 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 04:54:39,786 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 04:54:39,863 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 04:54:40,033 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 04:54:41,597 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:54:41,597 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 04:54:41,823 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:54:41,823 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 04:54:41,985 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:54:41,985 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 04:54:42,168 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:54:42,168 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 04:54:42,190 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 04:54:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:54:42,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:54:42,399 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7649 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7649) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:54:42,421 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7649 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7649) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:54:42,446 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7649 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7648 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7648))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7649)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:54:42,472 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7649 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7648 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7648))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7649)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:54:42,500 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7649 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7647 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7647))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7648)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7649)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:54:42,532 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7649 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7647 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7647))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7648)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7649)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:54:43,117 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7649 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7695 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7695))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7647)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7648)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7649)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:54:43,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:54:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038058068] [2023-11-29 04:54:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038058068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:54:43,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [144246471] [2023-11-29 04:54:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:43,124 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:54:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:54:43,125 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:54:43,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-11-29 04:55:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:55:35,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 04:55:35,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:55:35,673 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:55:35,674 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 04:55:36,576 INFO L349 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-11-29 04:55:36,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 04:55:36,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 04:55:37,959 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:55:37,959 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 41 [2023-11-29 04:55:38,299 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:55:38,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 41 [2023-11-29 04:55:38,525 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:55:38,525 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 41 [2023-11-29 04:55:38,794 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 04:55:38,795 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 41 [2023-11-29 04:55:38,821 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 35 treesize of output 19 [2023-11-29 04:55:38,927 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:55:38,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:55:38,956 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8132 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8132) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:55:43,172 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8131 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8131))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8132)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:55:43,902 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8130 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8130))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8131)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8132)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 04:55:43,931 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8130 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8130))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8131)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8132)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 04:55:44,612 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2023-11-29 04:55:44,612 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 109 treesize of output 108 [2023-11-29 04:55:44,635 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8178 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8178))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8130)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8131)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8132)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-11-29 04:55:44,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [144246471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:55:44,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:55:44,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 24 [2023-11-29 04:55:44,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250955493] [2023-11-29 04:55:44,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:55:44,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 04:55:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:55:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 04:55:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=702, Unknown=25, NotChecked=780, Total=1640 [2023-11-29 04:55:44,644 INFO L87 Difference]: Start difference. First operand 538 states and 594 transitions. Second operand has 25 states, 22 states have (on average 5.909090909090909) internal successors, (130), 24 states have internal predecessors, (130), 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 04:56:04,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:56:04,160 INFO L93 Difference]: Finished difference Result 991 states and 1102 transitions. [2023-11-29 04:56:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 04:56:04,160 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 5.909090909090909) internal successors, (130), 24 states have internal predecessors, (130), 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 109 [2023-11-29 04:56:04,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:56:04,165 INFO L225 Difference]: With dead ends: 991 [2023-11-29 04:56:04,166 INFO L226 Difference]: Without dead ends: 991 [2023-11-29 04:56:04,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=293, Invalid=1708, Unknown=27, NotChecked=1164, Total=3192 [2023-11-29 04:56:04,167 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 729 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 4679 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 4755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:56:04,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 3178 Invalid, 4755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 4679 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2023-11-29 04:56:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-11-29 04:56:04,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 537. [2023-11-29 04:56:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 349 states have (on average 1.6217765042979944) internal successors, (566), 530 states have internal predecessors, (566), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-29 04:56:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 593 transitions. [2023-11-29 04:56:04,184 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 593 transitions. Word has length 109 [2023-11-29 04:56:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:56:04,184 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 593 transitions. [2023-11-29 04:56:04,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 5.909090909090909) internal successors, (130), 24 states have internal predecessors, (130), 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 04:56:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 593 transitions. [2023-11-29 04:56:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 04:56:04,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:56:04,186 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] [2023-11-29 04:56:04,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2023-11-29 04:56:04,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:56:04,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:56:04,604 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 327 more)] === [2023-11-29 04:56:04,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:56:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1372675209, now seen corresponding path program 1 times [2023-11-29 04:56:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:56:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756901059] [2023-11-29 04:56:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:04,605 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 04:56:04,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:56:04,606 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:56:04,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/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 04:56:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:56:05,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 116 conjunts are in the unsatisfiable core [2023-11-29 04:56:05,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:56:05,920 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 04:56:06,165 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 04:56:06,193 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:56:06,194 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 04:56:06,244 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 04:56:06,266 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 04:56:06,453 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 04:56:06,462 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 04:56:07,730 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:56:07,731 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 04:56:07,754 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 04:56:07,958 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:56:07,959 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 04:56:07,975 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 04:56:08,135 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:56:08,135 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 04:56:08,151 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 04:56:08,324 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:56:08,324 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 04:56:08,340 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 04:56:08,367 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 04:56:08,381 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 04:56:08,447 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-29 04:56:08,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:56:08,725 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8664 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8664) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv20 32)) (bvadd .cse1 (_ bv24 32))))))) is different from false [2023-11-29 04:56:08,775 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8664 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8664) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 04:56:08,934 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8661) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8662) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8664 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8662))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8661) .cse2 v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8664) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 04:56:09,058 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8661) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8662) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8664 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8662))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8661) .cse3 v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8664) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 04:56:10,134 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8664 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8659))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8662))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8660) .cse0 v_ArrVal_8661) .cse1 v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8664) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8659))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8660) .cse6 v_ArrVal_8661) (select (select (store .cse7 .cse6 v_ArrVal_8662) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8663))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2023-11-29 04:56:12,124 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8664 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8659))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8662))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8660) .cse1 v_ArrVal_8661) .cse2 v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8664) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8659))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8660) .cse7 v_ArrVal_8661) (select (select (store .cse8 .cse7 v_ArrVal_8662) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8663))) |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 04:56:18,333 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8756 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8755 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8664 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8756))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_8659))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8662))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8755) .cse0 v_ArrVal_8660) .cse1 v_ArrVal_8661) .cse2 v_ArrVal_8663) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8664) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_8661 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8660 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8659 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8756 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8755 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8663 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8756))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_8659))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8755) .cse8 v_ArrVal_8660) .cse9 v_ArrVal_8661) (select (select (store .cse10 .cse9 v_ArrVal_8662) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8663))))) |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 04:56:18,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:56:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756901059] [2023-11-29 04:56:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756901059] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:56:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [648959488] [2023-11-29 04:56:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:56:18,382 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:56:18,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:56:18,383 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:56:18,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881efebc-9e2e-47dd-bd26-cec3cf3da010/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process