./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:27:24,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:27:24,757 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 01:27:24,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:27:24,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:27:24,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:27:24,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:27:24,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:27:24,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:27:24,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:27:24,830 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:27:24,831 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:27:24,831 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:27:24,832 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:27:24,832 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:27:24,836 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:27:24,836 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:27:24,837 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:27:24,837 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:27:24,861 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:27:24,861 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:27:24,863 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:27:24,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 01:27:24,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 01:27:24,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:27:24,867 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:27:24,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:27:24,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:27:24,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:27:24,868 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 01:27:24,869 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 01:27:24,870 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 01:27:24,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:27:24,871 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 01:27:24,871 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:27:24,871 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 01:27:24,871 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:27:24,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:27:24,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:27:24,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:27:24,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:27:24,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:27:24,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:27:24,875 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:27:24,875 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:27:24,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:27:24,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:27:24,876 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:27:24,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:27:24,877 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2024-11-09 01:27:25,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:27:25,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:27:25,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:27:25,214 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:27:25,214 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:27:25,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i Unable to find full path for "g++" [2024-11-09 01:27:27,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:27:27,556 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:27:27,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2024-11-09 01:27:27,583 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data/95accc3c5/0fbf695664804853911530df83c3ce7c/FLAG5ca547258 [2024-11-09 01:27:27,782 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data/95accc3c5/0fbf695664804853911530df83c3ce7c [2024-11-09 01:27:27,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:27:27,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:27:27,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:27,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:27:27,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:27:27,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:27" (1/1) ... [2024-11-09 01:27:27,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4001b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:27, skipping insertion in model container [2024-11-09 01:27:27,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:27" (1/1) ... [2024-11-09 01:27:27,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:27:28,363 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,419 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,423 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,431 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,441 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,469 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,472 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,475 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,478 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,480 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,481 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,492 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:28,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:28,524 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-09 01:27:28,524 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2048de31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:28, skipping insertion in model container [2024-11-09 01:27:28,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:28,525 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-09 01:27:28,527 INFO L158 Benchmark]: Toolchain (without parser) took 739.53ms. Allocated memory is still 136.3MB. Free memory was 91.0MB in the beginning and 70.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 01:27:28,528 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 01:27:28,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 737.10ms. Allocated memory is still 136.3MB. Free memory was 91.0MB in the beginning and 70.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 01:27:28,532 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 136.3MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 737.10ms. Allocated memory is still 136.3MB. Free memory was 91.0MB in the beginning and 70.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:27:30,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:27:30,931 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-09 01:27:30,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:27:30,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:27:30,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:27:30,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:27:30,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:27:30,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:27:30,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:27:30,989 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:27:30,990 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:27:30,990 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:27:30,990 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:27:30,993 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:27:30,993 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:27:30,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 01:27:30,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 01:27:30,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:27:31,000 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:27:31,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:27:31,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:27:31,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:27:31,001 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 01:27:31,001 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 01:27:31,002 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 01:27:31,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:27:31,002 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 01:27:31,002 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 01:27:31,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:27:31,003 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 01:27:31,003 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 01:27:31,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:27:31,003 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:27:31,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:27:31,004 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 01:27:31,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:27:31,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:27:31,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:27:31,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:27:31,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:27:31,007 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 01:27:31,008 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 01:27:31,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:27:31,020 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:27:31,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2024-11-09 01:27:31,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:27:31,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:27:31,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:27:31,446 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:27:31,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:27:31,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i Unable to find full path for "g++" [2024-11-09 01:27:33,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:27:34,014 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:27:34,015 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2024-11-09 01:27:34,031 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data/a6e7f6595/fd1093c5d3bb44039ba57394bfc76ef0/FLAG9d74b3bee [2024-11-09 01:27:34,048 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/data/a6e7f6595/fd1093c5d3bb44039ba57394bfc76ef0 [2024-11-09 01:27:34,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:27:34,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:27:34,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:34,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:27:34,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:27:34,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:34" (1/1) ... [2024-11-09 01:27:34,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ee3d18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:34, skipping insertion in model container [2024-11-09 01:27:34,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:27:34" (1/1) ... [2024-11-09 01:27:34,147 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:27:34,772 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,828 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,838 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,845 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,855 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,885 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,886 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,890 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,894 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,895 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,896 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,907 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:34,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:34,935 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-09 01:27:34,950 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:27:34,988 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,018 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,023 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,028 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,040 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,054 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,055 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,057 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,058 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,059 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,059 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,063 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 01:27:35,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:35,069 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:27:35,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:27:35,235 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:27:35,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35 WrapperNode [2024-11-09 01:27:35,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:27:35,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:27:35,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:27:35,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:27:35,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,326 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 784 [2024-11-09 01:27:35,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:27:35,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:27:35,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:27:35,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:27:35,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,358 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,358 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:27:35,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:27:35,415 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:27:35,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:27:35,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (1/1) ... [2024-11-09 01:27:35,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:27:35,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:27:35,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:27:35,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:27:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 01:27:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 01:27:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 01:27:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 01:27:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 01:27:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 01:27:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 01:27:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:27:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 01:27:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 01:27:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 01:27:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 01:27:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 01:27:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:27:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:27:35,819 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:27:35,822 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:27:35,826 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-09 01:27:40,010 INFO L? ?]: Removed 910 outVars from TransFormulas that were not future-live. [2024-11-09 01:27:40,010 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:27:40,055 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:27:40,056 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-09 01:27:40,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:27:40 BoogieIcfgContainer [2024-11-09 01:27:40,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:27:40,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:27:40,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:27:40,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:27:40,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:27:34" (1/3) ... [2024-11-09 01:27:40,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee5f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:27:40, skipping insertion in model container [2024-11-09 01:27:40,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:27:35" (2/3) ... [2024-11-09 01:27:40,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee5f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:27:40, skipping insertion in model container [2024-11-09 01:27:40,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:27:40" (3/3) ... [2024-11-09 01:27:40,071 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2024-11-09 01:27:40,089 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:27:40,090 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 425 error locations. [2024-11-09 01:27:40,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:27:40,186 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e61cdee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:27:40,187 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-11-09 01:27:40,194 INFO L276 IsEmpty]: Start isEmpty. Operand has 862 states, 424 states have (on average 2.214622641509434) internal successors, (939), 856 states have internal predecessors, (939), 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) [2024-11-09 01:27:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:27:40,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:40,201 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:27:40,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:40,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1155791597, now seen corresponding path program 1 times [2024-11-09 01:27:40,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299260010] [2024-11-09 01:27:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:40,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:40,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:40,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 01:27:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:40,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 01:27:40,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:40,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:40,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:40,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299260010] [2024-11-09 01:27:40,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299260010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:40,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:40,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:40,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118346951] [2024-11-09 01:27:40,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:40,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 01:27:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:40,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 01:27:40,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:27:40,460 INFO L87 Difference]: Start difference. First operand has 862 states, 424 states have (on average 2.214622641509434) internal successors, (939), 856 states have internal predecessors, (939), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:40,539 INFO L93 Difference]: Finished difference Result 852 states and 914 transitions. [2024-11-09 01:27:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 01:27:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 01:27:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:40,564 INFO L225 Difference]: With dead ends: 852 [2024-11-09 01:27:40,564 INFO L226 Difference]: Without dead ends: 850 [2024-11-09 01:27:40,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:27:40,570 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:40,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-09 01:27:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2024-11-09 01:27:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 418 states have (on average 2.1196172248803826) internal successors, (886), 844 states have internal predecessors, (886), 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) [2024-11-09 01:27:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 912 transitions. [2024-11-09 01:27:40,675 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 912 transitions. Word has length 6 [2024-11-09 01:27:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:40,675 INFO L471 AbstractCegarLoop]: Abstraction has 850 states and 912 transitions. [2024-11-09 01:27:40,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:40,676 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 912 transitions. [2024-11-09 01:27:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:27:40,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:40,677 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:27:40,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 01:27:40,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:40,880 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:40,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1155791659, now seen corresponding path program 1 times [2024-11-09 01:27:40,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:40,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342280617] [2024-11-09 01:27:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:40,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:40,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:40,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 01:27:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:41,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:27:41,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:41,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 01:27:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:41,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:41,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:41,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342280617] [2024-11-09 01:27:41,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342280617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:41,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:41,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:41,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510295294] [2024-11-09 01:27:41,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:41,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:41,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:41,095 INFO L87 Difference]: Start difference. First operand 850 states and 912 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:43,022 INFO L93 Difference]: Finished difference Result 804 states and 868 transitions. [2024-11-09 01:27:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 01:27:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:43,028 INFO L225 Difference]: With dead ends: 804 [2024-11-09 01:27:43,028 INFO L226 Difference]: Without dead ends: 804 [2024-11-09 01:27:43,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:43,030 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 541 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:43,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 673 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 01:27:43,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-09 01:27:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2024-11-09 01:27:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 418 states have (on average 2.0023923444976077) internal successors, (837), 795 states have internal predecessors, (837), 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) [2024-11-09 01:27:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 863 transitions. [2024-11-09 01:27:43,059 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 863 transitions. Word has length 6 [2024-11-09 01:27:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:43,059 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 863 transitions. [2024-11-09 01:27:43,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 863 transitions. [2024-11-09 01:27:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 01:27:43,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:43,060 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 01:27:43,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 01:27:43,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:43,263 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:43,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1155791660, now seen corresponding path program 1 times [2024-11-09 01:27:43,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:43,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388257508] [2024-11-09 01:27:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:43,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:43,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:43,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:43,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 01:27:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:43,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:27:43,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:43,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 01:27:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:43,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:43,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:43,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388257508] [2024-11-09 01:27:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388257508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:43,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:27:43,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085983076] [2024-11-09 01:27:43,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:43,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:43,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:43,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:43,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:43,426 INFO L87 Difference]: Start difference. First operand 801 states and 863 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:45,397 INFO L93 Difference]: Finished difference Result 877 states and 944 transitions. [2024-11-09 01:27:45,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:45,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-09 01:27:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:45,402 INFO L225 Difference]: With dead ends: 877 [2024-11-09 01:27:45,402 INFO L226 Difference]: Without dead ends: 877 [2024-11-09 01:27:45,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:45,404 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 267 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:45,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1065 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 01:27:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2024-11-09 01:27:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 828. [2024-11-09 01:27:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 455 states have (on average 1.9802197802197803) internal successors, (901), 822 states have internal predecessors, (901), 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) [2024-11-09 01:27:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 927 transitions. [2024-11-09 01:27:45,436 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 927 transitions. Word has length 6 [2024-11-09 01:27:45,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:45,436 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 927 transitions. [2024-11-09 01:27:45,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:45,437 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 927 transitions. [2024-11-09 01:27:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 01:27:45,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:45,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:45,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 01:27:45,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:45,640 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr312REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:45,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1995012136, now seen corresponding path program 1 times [2024-11-09 01:27:45,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:45,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495736819] [2024-11-09 01:27:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:45,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:45,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:45,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:45,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 01:27:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:45,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:27:45,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:45,759 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:45,759 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495736819] [2024-11-09 01:27:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495736819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:45,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:45,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903509968] [2024-11-09 01:27:45,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:45,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:45,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:45,762 INFO L87 Difference]: Start difference. First operand 828 states and 927 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:45,887 INFO L93 Difference]: Finished difference Result 1404 states and 1568 transitions. [2024-11-09 01:27:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 01:27:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:45,897 INFO L225 Difference]: With dead ends: 1404 [2024-11-09 01:27:45,897 INFO L226 Difference]: Without dead ends: 1404 [2024-11-09 01:27:45,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:45,898 INFO L432 NwaCegarLoop]: 848 mSDtfsCounter, 560 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:45,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 1693 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2024-11-09 01:27:45,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 830. [2024-11-09 01:27:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 457 states have (on average 1.9759299781181618) internal successors, (903), 824 states have internal predecessors, (903), 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) [2024-11-09 01:27:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 929 transitions. [2024-11-09 01:27:45,925 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 929 transitions. Word has length 7 [2024-11-09 01:27:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:45,925 INFO L471 AbstractCegarLoop]: Abstraction has 830 states and 929 transitions. [2024-11-09 01:27:45,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 929 transitions. [2024-11-09 01:27:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 01:27:45,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:45,927 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:45,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:46,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:46,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:46,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1247697054, now seen corresponding path program 1 times [2024-11-09 01:27:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498737549] [2024-11-09 01:27:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:46,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:46,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:46,134 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:46,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-09 01:27:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:46,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 01:27:46,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:46,289 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:46,289 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498737549] [2024-11-09 01:27:46,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498737549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:46,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967135843] [2024-11-09 01:27:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:46,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:46,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:46,292 INFO L87 Difference]: Start difference. First operand 830 states and 929 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:46,336 INFO L93 Difference]: Finished difference Result 787 states and 884 transitions. [2024-11-09 01:27:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:46,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 01:27:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:46,340 INFO L225 Difference]: With dead ends: 787 [2024-11-09 01:27:46,340 INFO L226 Difference]: Without dead ends: 787 [2024-11-09 01:27:46,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:46,342 INFO L432 NwaCegarLoop]: 796 mSDtfsCounter, 71 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:46,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1529 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:27:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-09 01:27:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2024-11-09 01:27:46,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 438 states have (on average 1.9589041095890412) internal successors, (858), 781 states have internal predecessors, (858), 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) [2024-11-09 01:27:46,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 884 transitions. [2024-11-09 01:27:46,376 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 884 transitions. Word has length 13 [2024-11-09 01:27:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:46,377 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 884 transitions. [2024-11-09 01:27:46,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 884 transitions. [2024-11-09 01:27:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 01:27:46,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:46,378 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:46,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-09 01:27:46,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:46,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:46,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash 25685591, now seen corresponding path program 1 times [2024-11-09 01:27:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:46,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348481835] [2024-11-09 01:27:46,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:46,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:46,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:46,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:46,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-09 01:27:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:46,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:27:46,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:46,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:46,737 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348481835] [2024-11-09 01:27:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348481835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:46,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:27:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809529139] [2024-11-09 01:27:46,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:46,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:46,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:46,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:46,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:46,740 INFO L87 Difference]: Start difference. First operand 787 states and 884 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:46,851 INFO L93 Difference]: Finished difference Result 765 states and 855 transitions. [2024-11-09 01:27:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:27:46,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 01:27:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:46,854 INFO L225 Difference]: With dead ends: 765 [2024-11-09 01:27:46,854 INFO L226 Difference]: Without dead ends: 765 [2024-11-09 01:27:46,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:27:46,856 INFO L432 NwaCegarLoop]: 751 mSDtfsCounter, 48 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:46,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 2227 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-09 01:27:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2024-11-09 01:27:46,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 430 states have (on average 1.927906976744186) internal successors, (829), 759 states have internal predecessors, (829), 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) [2024-11-09 01:27:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 855 transitions. [2024-11-09 01:27:46,877 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 855 transitions. Word has length 14 [2024-11-09 01:27:46,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:46,878 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 855 transitions. [2024-11-09 01:27:46,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:46,878 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 855 transitions. [2024-11-09 01:27:46,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 01:27:46,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:46,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:46,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-09 01:27:47,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:47,081 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:47,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash 994337701, now seen corresponding path program 1 times [2024-11-09 01:27:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:47,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785753957] [2024-11-09 01:27:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:47,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:47,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:47,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:47,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-09 01:27:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:47,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:27:47,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:47,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 01:27:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:47,351 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:47,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:47,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785753957] [2024-11-09 01:27:47,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785753957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:47,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:47,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:47,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115290404] [2024-11-09 01:27:47,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:47,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:47,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:47,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:47,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:47,354 INFO L87 Difference]: Start difference. First operand 765 states and 855 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:49,591 INFO L93 Difference]: Finished difference Result 765 states and 855 transitions. [2024-11-09 01:27:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:27:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 01:27:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:49,595 INFO L225 Difference]: With dead ends: 765 [2024-11-09 01:27:49,595 INFO L226 Difference]: Without dead ends: 765 [2024-11-09 01:27:49,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:27:49,596 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 476 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:49,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 961 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 01:27:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-09 01:27:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 761. [2024-11-09 01:27:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 430 states have (on average 1.9186046511627908) internal successors, (825), 755 states have internal predecessors, (825), 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) [2024-11-09 01:27:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 851 transitions. [2024-11-09 01:27:49,615 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 851 transitions. Word has length 28 [2024-11-09 01:27:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:49,615 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 851 transitions. [2024-11-09 01:27:49,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 851 transitions. [2024-11-09 01:27:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 01:27:49,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:49,617 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:49,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-09 01:27:49,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:49,818 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:49,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 994337702, now seen corresponding path program 1 times [2024-11-09 01:27:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:49,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949487540] [2024-11-09 01:27:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:49,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:49,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:49,820 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:49,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-09 01:27:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:49,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 01:27:49,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:49,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 01:27:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:50,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:50,267 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:50,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949487540] [2024-11-09 01:27:50,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949487540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:50,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:50,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211216636] [2024-11-09 01:27:50,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:50,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:50,269 INFO L87 Difference]: Start difference. First operand 761 states and 851 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:52,709 INFO L93 Difference]: Finished difference Result 810 states and 868 transitions. [2024-11-09 01:27:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:27:52,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-09 01:27:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:52,715 INFO L225 Difference]: With dead ends: 810 [2024-11-09 01:27:52,716 INFO L226 Difference]: Without dead ends: 810 [2024-11-09 01:27:52,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:27:52,717 INFO L432 NwaCegarLoop]: 688 mSDtfsCounter, 198 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:52,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1391 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 01:27:52,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-11-09 01:27:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 757. [2024-11-09 01:27:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 430 states have (on average 1.9093023255813955) internal successors, (821), 751 states have internal predecessors, (821), 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) [2024-11-09 01:27:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 847 transitions. [2024-11-09 01:27:52,740 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 847 transitions. Word has length 28 [2024-11-09 01:27:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:52,741 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 847 transitions. [2024-11-09 01:27:52,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 847 transitions. [2024-11-09 01:27:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 01:27:52,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:52,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:52,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-11-09 01:27:52,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:52,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:52,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2065339650, now seen corresponding path program 1 times [2024-11-09 01:27:52,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:52,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155299238] [2024-11-09 01:27:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:52,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:52,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:52,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:52,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-09 01:27:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:53,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:27:53,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:53,281 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:53,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:53,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155299238] [2024-11-09 01:27:53,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155299238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:53,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:53,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:27:53,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814143274] [2024-11-09 01:27:53,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:53,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:53,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:53,284 INFO L87 Difference]: Start difference. First operand 757 states and 847 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:53,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:53,367 INFO L93 Difference]: Finished difference Result 751 states and 837 transitions. [2024-11-09 01:27:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 01:27:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-09 01:27:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:53,370 INFO L225 Difference]: With dead ends: 751 [2024-11-09 01:27:53,370 INFO L226 Difference]: Without dead ends: 751 [2024-11-09 01:27:53,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:27:53,372 INFO L432 NwaCegarLoop]: 745 mSDtfsCounter, 21 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:53,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2204 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:27:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2024-11-09 01:27:53,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2024-11-09 01:27:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 424 states have (on average 1.9127358490566038) internal successors, (811), 745 states have internal predecessors, (811), 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) [2024-11-09 01:27:53,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 837 transitions. [2024-11-09 01:27:53,388 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 837 transitions. Word has length 44 [2024-11-09 01:27:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:53,389 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 837 transitions. [2024-11-09 01:27:53,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:27:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 837 transitions. [2024-11-09 01:27:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 01:27:53,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:53,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:53,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-09 01:27:53,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:53,592 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:53,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1492340938, now seen corresponding path program 1 times [2024-11-09 01:27:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:53,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530010389] [2024-11-09 01:27:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:53,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:53,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-09 01:27:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:53,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:27:53,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:54,217 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:54,217 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:54,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530010389] [2024-11-09 01:27:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530010389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:54,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:54,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721691514] [2024-11-09 01:27:54,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:54,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 01:27:54,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:54,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 01:27:54,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:54,220 INFO L87 Difference]: Start difference. First operand 751 states and 837 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-09 01:27:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:54,498 INFO L93 Difference]: Finished difference Result 969 states and 1085 transitions. [2024-11-09 01:27:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 01:27:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-11-09 01:27:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:54,503 INFO L225 Difference]: With dead ends: 969 [2024-11-09 01:27:54,503 INFO L226 Difference]: Without dead ends: 969 [2024-11-09 01:27:54,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 01:27:54,504 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 179 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:54,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1526 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 01:27:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-09 01:27:54,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 798. [2024-11-09 01:27:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 471 states have (on average 1.821656050955414) internal successors, (858), 792 states have internal predecessors, (858), 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) [2024-11-09 01:27:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 884 transitions. [2024-11-09 01:27:54,526 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 884 transitions. Word has length 52 [2024-11-09 01:27:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:54,527 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 884 transitions. [2024-11-09 01:27:54,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-09 01:27:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 884 transitions. [2024-11-09 01:27:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 01:27:54,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:54,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:54,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-09 01:27:54,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:54,730 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:54,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:54,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1014889515, now seen corresponding path program 1 times [2024-11-09 01:27:54,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:54,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748968137] [2024-11-09 01:27:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:54,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:54,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:54,734 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:54,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-09 01:27:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:55,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 01:27:55,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:55,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 01:27:55,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 01:27:55,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 01:27:55,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-09 01:27:55,923 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 01:27:55,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 01:27:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:55,947 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:55,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:55,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748968137] [2024-11-09 01:27:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748968137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 01:27:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957818438] [2024-11-09 01:27:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:55,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:27:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:27:55,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:55,950 INFO L87 Difference]: Start difference. First operand 798 states and 884 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-09 01:27:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:27:57,574 INFO L93 Difference]: Finished difference Result 760 states and 846 transitions. [2024-11-09 01:27:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:27:57,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-09 01:27:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:27:57,578 INFO L225 Difference]: With dead ends: 760 [2024-11-09 01:27:57,578 INFO L226 Difference]: Without dead ends: 760 [2024-11-09 01:27:57,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:27:57,579 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 756 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:27:57,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 584 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 01:27:57,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-11-09 01:27:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 723. [2024-11-09 01:27:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 434 states have (on average 1.7188940092165899) internal successors, (746), 717 states have internal predecessors, (746), 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) [2024-11-09 01:27:57,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 772 transitions. [2024-11-09 01:27:57,595 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 772 transitions. Word has length 55 [2024-11-09 01:27:57,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:27:57,595 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 772 transitions. [2024-11-09 01:27:57,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-09 01:27:57,596 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 772 transitions. [2024-11-09 01:27:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 01:27:57,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:27:57,597 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:27:57,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-09 01:27:57,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:57,801 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:27:57,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:27:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1692476316, now seen corresponding path program 1 times [2024-11-09 01:27:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:27:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963520434] [2024-11-09 01:27:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:27:57,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:27:57,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:27:57,803 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:27:57,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-09 01:27:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:27:58,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 01:27:58,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:27:58,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 01:27:58,111 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 [2024-11-09 01:27:58,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 01:27:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:27:58,156 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:27:58,156 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:27:58,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963520434] [2024-11-09 01:27:58,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963520434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:27:58,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:27:58,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:27:58,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223842343] [2024-11-09 01:27:58,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:27:58,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:27:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:27:58,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:27:58,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:27:58,158 INFO L87 Difference]: Start difference. First operand 723 states and 772 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-09 01:28:00,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:00,815 INFO L93 Difference]: Finished difference Result 722 states and 771 transitions. [2024-11-09 01:28:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:28:00,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2024-11-09 01:28:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:00,821 INFO L225 Difference]: With dead ends: 722 [2024-11-09 01:28:00,821 INFO L226 Difference]: Without dead ends: 722 [2024-11-09 01:28:00,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:28:00,822 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 2 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:00,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1867 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 01:28:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-11-09 01:28:00,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2024-11-09 01:28:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 434 states have (on average 1.7165898617511521) internal successors, (745), 716 states have internal predecessors, (745), 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) [2024-11-09 01:28:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 771 transitions. [2024-11-09 01:28:00,852 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 771 transitions. Word has length 60 [2024-11-09 01:28:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:00,852 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 771 transitions. [2024-11-09 01:28:00,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-09 01:28:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 771 transitions. [2024-11-09 01:28:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 01:28:00,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:00,853 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:28:00,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-11-09 01:28:01,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:01,054 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:28:01,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:01,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1692476317, now seen corresponding path program 1 times [2024-11-09 01:28:01,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:28:01,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319595197] [2024-11-09 01:28:01,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:01,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:28:01,060 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:28:01,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-09 01:28:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:01,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 01:28:01,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:01,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 01:28:01,337 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 [2024-11-09 01:28:01,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 01:28:01,407 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 [2024-11-09 01:28:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:01,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:28:01,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:28:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319595197] [2024-11-09 01:28:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319595197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:28:01,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:28:01,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:28:01,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590872180] [2024-11-09 01:28:01,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:28:01,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 01:28:01,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:28:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 01:28:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 01:28:01,432 INFO L87 Difference]: Start difference. First operand 722 states and 771 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-09 01:28:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:04,316 INFO L93 Difference]: Finished difference Result 721 states and 770 transitions. [2024-11-09 01:28:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:28:04,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2024-11-09 01:28:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:04,320 INFO L225 Difference]: With dead ends: 721 [2024-11-09 01:28:04,320 INFO L226 Difference]: Without dead ends: 721 [2024-11-09 01:28:04,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 01:28:04,321 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 1 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:04,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1890 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 01:28:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-09 01:28:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-09 01:28:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 433 states have (on average 1.71824480369515) internal successors, (744), 715 states have internal predecessors, (744), 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) [2024-11-09 01:28:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 770 transitions. [2024-11-09 01:28:04,335 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 770 transitions. Word has length 60 [2024-11-09 01:28:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:04,336 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 770 transitions. [2024-11-09 01:28:04,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-11-09 01:28:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 770 transitions. [2024-11-09 01:28:04,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 01:28:04,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:04,337 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:28:04,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-09 01:28:04,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:04,538 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:28:04,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash -962962749, now seen corresponding path program 1 times [2024-11-09 01:28:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:28:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107960941] [2024-11-09 01:28:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:04,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:04,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:28:04,541 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:28:04,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-09 01:28:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:04,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 01:28:04,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:04,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:04,849 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:28:04,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:28:04,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107960941] [2024-11-09 01:28:04,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107960941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:28:04,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:28:04,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 01:28:04,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884516884] [2024-11-09 01:28:04,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:28:04,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 01:28:04,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:28:04,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 01:28:04,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:28:04,852 INFO L87 Difference]: Start difference. First operand 721 states and 770 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 01:28:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:04,905 INFO L93 Difference]: Finished difference Result 724 states and 774 transitions. [2024-11-09 01:28:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 01:28:04,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2024-11-09 01:28:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:04,910 INFO L225 Difference]: With dead ends: 724 [2024-11-09 01:28:04,910 INFO L226 Difference]: Without dead ends: 724 [2024-11-09 01:28:04,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 01:28:04,911 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 0 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:04,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2149 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:28:04,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-11-09 01:28:04,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2024-11-09 01:28:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 435 states have (on average 1.717241379310345) internal successors, (747), 718 states have internal predecessors, (747), 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) [2024-11-09 01:28:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 774 transitions. [2024-11-09 01:28:04,930 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 774 transitions. Word has length 68 [2024-11-09 01:28:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:04,933 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 774 transitions. [2024-11-09 01:28:04,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 01:28:04,933 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 774 transitions. [2024-11-09 01:28:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 01:28:04,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:04,934 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:28:04,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-09 01:28:05,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:05,135 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:28:05,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:05,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1548096934, now seen corresponding path program 1 times [2024-11-09 01:28:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:28:05,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922800417] [2024-11-09 01:28:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:05,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:05,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:28:05,140 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:28:05,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-09 01:28:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:05,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:28:05,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:05,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:05,622 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:28:05,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922800417] [2024-11-09 01:28:05,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922800417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:05,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1911005667] [2024-11-09 01:28:05,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:05,624 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:28:05,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:28:05,627 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:28:05,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-09 01:28:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:06,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:28:06,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:06,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:06,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1911005667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330762133] [2024-11-09 01:28:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:06,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:28:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:28:06,241 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:28:06,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 01:28:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:06,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 01:28:06,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:06,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:06,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330762133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:06,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 01:28:06,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-09 01:28:06,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063951924] [2024-11-09 01:28:06,587 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 01:28:06,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:28:06,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:28:06,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:28:06,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:28:06,589 INFO L87 Difference]: Start difference. First operand 724 states and 774 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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) [2024-11-09 01:28:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:06,757 INFO L93 Difference]: Finished difference Result 736 states and 791 transitions. [2024-11-09 01:28:06,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 01:28:06,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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 [2024-11-09 01:28:06,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:06,761 INFO L225 Difference]: With dead ends: 736 [2024-11-09 01:28:06,761 INFO L226 Difference]: Without dead ends: 736 [2024-11-09 01:28:06,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-09 01:28:06,762 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 8 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:06,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2152 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 01:28:06,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-09 01:28:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 734. [2024-11-09 01:28:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 444 states have (on average 1.7162162162162162) internal successors, (762), 727 states have internal predecessors, (762), 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) [2024-11-09 01:28:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 789 transitions. [2024-11-09 01:28:06,778 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 789 transitions. Word has length 69 [2024-11-09 01:28:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:06,778 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 789 transitions. [2024-11-09 01:28:06,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 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) [2024-11-09 01:28:06,778 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 789 transitions. [2024-11-09 01:28:06,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 01:28:06,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:06,779 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:28:06,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-09 01:28:06,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-09 01:28:07,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 01:28:07,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:28:07,380 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:28:07,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1323074685, now seen corresponding path program 2 times [2024-11-09 01:28:07,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:28:07,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220608312] [2024-11-09 01:28:07,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 01:28:07,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:07,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:28:07,383 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:28:07,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2024-11-09 01:28:07,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 01:28:07,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:28:07,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:28:07,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:08,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:08,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:28:08,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220608312] [2024-11-09 01:28:08,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220608312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:08,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1582229148] [2024-11-09 01:28:08,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 01:28:08,340 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:28:08,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:28:08,344 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:28:08,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-09 01:28:09,826 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 01:28:09,827 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:28:09,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:28:09,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:09,881 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:09,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1582229148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123751263] [2024-11-09 01:28:09,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 01:28:09,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:28:09,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:28:10,000 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:28:10,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 01:28:34,406 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 01:28:34,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:28:34,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 01:28:34,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:34,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 01:28:34,644 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 01:28:34,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 01:28:34,685 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 [2024-11-09 01:28:35,033 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 01:28:35,034 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 [2024-11-09 01:28:35,125 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 [2024-11-09 01:28:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 01:28:35,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:35,383 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-09 01:28:35,383 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 [2024-11-09 01:28:35,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123751263] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:28:35,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 01:28:35,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2024-11-09 01:28:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350467840] [2024-11-09 01:28:35,494 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 01:28:35,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 01:28:35,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:28:35,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 01:28:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=504, Unknown=7, NotChecked=0, Total=600 [2024-11-09 01:28:35,496 INFO L87 Difference]: Start difference. First operand 734 states and 789 transitions. Second operand has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 01:28:47,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:47,055 INFO L93 Difference]: Finished difference Result 750 states and 811 transitions. [2024-11-09 01:28:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 01:28:47,056 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2024-11-09 01:28:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:47,059 INFO L225 Difference]: With dead ends: 750 [2024-11-09 01:28:47,060 INFO L226 Difference]: Without dead ends: 744 [2024-11-09 01:28:47,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=389, Invalid=2053, Unknown=8, NotChecked=0, Total=2450 [2024-11-09 01:28:47,061 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 418 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:47,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 5300 Invalid, 3910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-09 01:28:47,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2024-11-09 01:28:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 742. [2024-11-09 01:28:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 453 states have (on average 1.7041942604856513) internal successors, (772), 735 states have internal predecessors, (772), 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) [2024-11-09 01:28:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 799 transitions. [2024-11-09 01:28:47,084 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 799 transitions. Word has length 72 [2024-11-09 01:28:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:47,084 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 799 transitions. [2024-11-09 01:28:47,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 01:28:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 799 transitions. [2024-11-09 01:28:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-09 01:28:47,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:47,086 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:28:47,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-09 01:28:47,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 01:28:47,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2024-11-09 01:28:47,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:47,687 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:28:47,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:47,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2092120228, now seen corresponding path program 1 times [2024-11-09 01:28:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:28:47,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82789857] [2024-11-09 01:28:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:47,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:47,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:28:47,694 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:28:47,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2024-11-09 01:28:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:48,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 01:28:48,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:48,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:49,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:28:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82789857] [2024-11-09 01:28:49,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82789857] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:49,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [176682807] [2024-11-09 01:28:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:49,133 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:28:49,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:28:49,137 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:28:49,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-09 01:28:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:49,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 01:28:49,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:49,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:50,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [176682807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227825668] [2024-11-09 01:28:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:28:50,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:28:50,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:28:50,129 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:28:50,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 01:28:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:28:50,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 01:28:50,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:50,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:28:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:51,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227825668] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:28:51,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 01:28:51,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2024-11-09 01:28:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83712747] [2024-11-09 01:28:51,675 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 01:28:51,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 01:28:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:28:51,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 01:28:51,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 01:28:51,678 INFO L87 Difference]: Start difference. First operand 742 states and 799 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:28:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:28:54,713 INFO L93 Difference]: Finished difference Result 768 states and 840 transitions. [2024-11-09 01:28:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 01:28:54,714 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 78 [2024-11-09 01:28:54,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:28:54,717 INFO L225 Difference]: With dead ends: 768 [2024-11-09 01:28:54,717 INFO L226 Difference]: Without dead ends: 762 [2024-11-09 01:28:54,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1168, Invalid=2254, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 01:28:54,719 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 24 mSDsluCounter, 9293 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10011 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:28:54,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 10011 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 01:28:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-09 01:28:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 760. [2024-11-09 01:28:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 471 states have (on average 1.6878980891719746) internal successors, (795), 753 states have internal predecessors, (795), 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) [2024-11-09 01:28:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 822 transitions. [2024-11-09 01:28:54,736 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 822 transitions. Word has length 78 [2024-11-09 01:28:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:28:54,736 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 822 transitions. [2024-11-09 01:28:54,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 38 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:28:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 822 transitions. [2024-11-09 01:28:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 01:28:54,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:28:54,737 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:28:54,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-09 01:28:54,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 01:28:55,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2024-11-09 01:28:55,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:55,339 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:28:55,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:28:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash 818260708, now seen corresponding path program 2 times [2024-11-09 01:28:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:28:55,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464969106] [2024-11-09 01:28:55,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 01:28:55,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:28:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:28:55,348 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:28:55,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2024-11-09 01:28:56,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 01:28:56,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:28:56,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 01:28:56,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:28:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:28:57,184 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:29:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:00,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:29:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464969106] [2024-11-09 01:29:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464969106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:29:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [229630306] [2024-11-09 01:29:00,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 01:29:00,652 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:29:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:29:00,655 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:29:00,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-09 01:29:02,442 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 01:29:02,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:29:02,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-09 01:29:02,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:29:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:02,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:29:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:03,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [229630306] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:29:03,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377529189] [2024-11-09 01:29:03,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 01:29:03,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:29:03,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:29:03,589 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:29:03,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 01:29:30,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 01:29:30,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:29:30,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 01:29:30,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:29:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:32,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:29:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:29:33,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377529189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:29:33,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 01:29:33,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 69 [2024-11-09 01:29:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655861165] [2024-11-09 01:29:33,060 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 01:29:33,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-09 01:29:33,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:29:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-09 01:29:33,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1166, Invalid=3526, Unknown=0, NotChecked=0, Total=4692 [2024-11-09 01:29:33,063 INFO L87 Difference]: Start difference. First operand 760 states and 822 transitions. Second operand has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 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) [2024-11-09 01:29:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:29:48,212 INFO L93 Difference]: Finished difference Result 802 states and 897 transitions. [2024-11-09 01:29:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-09 01:29:48,213 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 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 90 [2024-11-09 01:29:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:29:48,216 INFO L225 Difference]: With dead ends: 802 [2024-11-09 01:29:48,216 INFO L226 Difference]: Without dead ends: 796 [2024-11-09 01:29:48,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=3696, Invalid=8960, Unknown=0, NotChecked=0, Total=12656 [2024-11-09 01:29:48,221 INFO L432 NwaCegarLoop]: 718 mSDtfsCounter, 38 mSDsluCounter, 17883 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 18601 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-09 01:29:48,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 18601 Invalid, 2514 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-09 01:29:48,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2024-11-09 01:29:48,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 796. [2024-11-09 01:29:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 507 states have (on average 1.6627218934911243) internal successors, (843), 789 states have internal predecessors, (843), 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) [2024-11-09 01:29:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 870 transitions. [2024-11-09 01:29:48,239 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 870 transitions. Word has length 90 [2024-11-09 01:29:48,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:29:48,240 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 870 transitions. [2024-11-09 01:29:48,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 69 states have internal predecessors, (133), 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) [2024-11-09 01:29:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 870 transitions. [2024-11-09 01:29:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-09 01:29:48,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:29:48,242 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:29:48,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-09 01:29:48,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2024-11-09 01:29:48,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 01:29:48,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:29:48,844 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-09 01:29:48,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:29:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1631051004, now seen corresponding path program 3 times [2024-11-09 01:29:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:29:48,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186070327] [2024-11-09 01:29:48,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:29:48,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:29:48,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:29:48,848 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:29:48,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-09 01:29:51,556 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 01:29:51,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:29:51,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-09 01:29:51,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:29:51,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 01:29:52,012 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 01:29:52,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 01:29:52,022 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 [2024-11-09 01:29:52,070 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 [2024-11-09 01:29:52,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 01:29:52,237 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 [2024-11-09 01:29:52,244 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 [2024-11-09 01:29:53,351 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 01:29:53,352 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 [2024-11-09 01:29:53,382 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 [2024-11-09 01:29:53,439 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 [2024-11-09 01:29:53,445 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 [2024-11-09 01:29:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 01:29:53,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:29:55,228 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2900 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2900) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2899 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2900 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2900) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2899) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 01:29:55,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:29:55,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186070327] [2024-11-09 01:29:55,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186070327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:29:55,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1840459911] [2024-11-09 01:29:55,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:29:55,234 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:29:55,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:29:55,235 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:29:55,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-09 01:36:07,094 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-09 01:36:07,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:36:07,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-09 01:36:07,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:36:07,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-09 01:36:07,465 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-09 01:36:07,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-09 01:36:07,482 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 [2024-11-09 01:36:07,556 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 [2024-11-09 01:36:07,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-09 01:36:07,746 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 [2024-11-09 01:36:07,752 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 [2024-11-09 01:36:08,654 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 01:36:08,655 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 [2024-11-09 01:36:08,665 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 [2024-11-09 01:36:08,785 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 [2024-11-09 01:36:08,793 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 [2024-11-09 01:36:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-09 01:36:08,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:36:10,299 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3436 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3436) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3437 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3436 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3436) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3437) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-09 01:36:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1840459911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:36:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108445695] [2024-11-09 01:36:10,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 01:36:10,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:36:10,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:36:10,304 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:36:10,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b05909d2-ef93-44b2-ae08-39f9b4ae2a98/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process