./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:12,210 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:12,357 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-26 11:55:12,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:12,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:12,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:12,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:12,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:12,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:12,426 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:12,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:12,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:12,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:12,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:12,431 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:12,432 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:12,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:12,434 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:12,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:12,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:12,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:12,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:12,437 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:55:12,437 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:55:12,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:12,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:12,439 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:55:12,440 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:55:12,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:12,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:12,442 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:12,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:12,443 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:12,443 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:12,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:12,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:12,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:12,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:12,445 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:12,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:12,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:12,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:12,448 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:12,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:12,449 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2023-11-26 11:55:12,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:12,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:12,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:12,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:12,905 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:12,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-26 11:55:16,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:16,728 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:16,729 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-26 11:55:16,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data/393146fba/d0ce4d4fef974dbe8e627478841060a8/FLAGd7e8e3634 [2023-11-26 11:55:16,783 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data/393146fba/d0ce4d4fef974dbe8e627478841060a8 [2023-11-26 11:55:16,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:16,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:16,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:16,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:16,802 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:16,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f649e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:16, skipping insertion in model container [2023-11-26 11:55:16,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:16" (1/1) ... [2023-11-26 11:55:16,882 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:17,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:17,722 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-26 11:55:17,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@dfcf45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:17, skipping insertion in model container [2023-11-26 11:55:17,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:17,725 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-26 11:55:17,728 INFO L158 Benchmark]: Toolchain (without parser) took 936.22ms. Allocated memory is still 151.0MB. Free memory was 102.2MB in the beginning and 82.3MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:55:17,729 INFO L158 Benchmark]: CDTParser took 1.50ms. Allocated memory is still 151.0MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:55:17,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 929.68ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 82.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:55:17,733 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50ms. Allocated memory is still 151.0MB. Free memory is still 123.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 929.68ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 82.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:20,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:21,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2023-11-26 11:55:21,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:21,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:21,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:21,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:21,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:21,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:21,086 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:21,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:21,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:21,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:21,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:21,091 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:21,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:21,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:21,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:21,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:21,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:21,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:21,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:21,097 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:55:21,097 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:55:21,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:21,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:21,099 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:55:21,100 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:55:21,100 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:55:21,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:55:21,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:21,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:21,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:21,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:21,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:21,104 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:21,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:21,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:21,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:21,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:21,106 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:55:21,107 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:55:21,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:21,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:21,108 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:21,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:21,109 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:55:21,109 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6c6a722152c52daf4f5e799c877f12032a99023b4a9ea1a935c1ce634969e85 [2023-11-26 11:55:21,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:21,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:21,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:21,625 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:21,626 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:21,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-26 11:55:24,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:25,302 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:25,303 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test8-1.i [2023-11-26 11:55:25,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data/66bd98945/7ed86ed6b18d4e258bc582c937ff97b2/FLAG09396e5c9 [2023-11-26 11:55:25,349 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/data/66bd98945/7ed86ed6b18d4e258bc582c937ff97b2 [2023-11-26 11:55:25,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:25,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:25,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:25,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:25,361 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:25,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:25" (1/1) ... [2023-11-26 11:55:25,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c44e1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:25, skipping insertion in model container [2023-11-26 11:55:25,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:25" (1/1) ... [2023-11-26 11:55:25,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:26,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:26,282 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-26 11:55:26,298 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:26,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:26,377 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:26,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:26,601 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:55:26,609 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:26,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26 WrapperNode [2023-11-26 11:55:26,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:26,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:26,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:26,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:26,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,677 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,745 INFO L138 Inliner]: procedures = 180, calls = 299, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1002 [2023-11-26 11:55:26,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:26,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:26,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:26,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:26,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,769 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,837 INFO L175 MemorySlicer]: Split 261 memory accesses to 4 slices as follows [5, 2, 34, 220]. 84 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0, 0]. The 55 writes are split as follows [1, 0, 4, 50]. [2023-11-26 11:55:26,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,964 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:26,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:26,977 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:26,977 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:26,978 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (1/1) ... [2023-11-26 11:55:26,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:27,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:27,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:27,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-26 11:55:27,063 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-26 11:55:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-26 11:55:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-26 11:55:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-26 11:55:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-26 11:55:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 11:55:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 11:55:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 11:55:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 11:55:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:55:27,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:55:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 11:55:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 11:55:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 11:55:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-26 11:55:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 11:55:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 11:55:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 11:55:27,067 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-26 11:55:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-26 11:55:27,068 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-26 11:55:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:55:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:55:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:55:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:55:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:55:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:55:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-26 11:55:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:55:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:55:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:55:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:55:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:55:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 11:55:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 11:55:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 11:55:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 11:55:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:55:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 11:55:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 11:55:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 11:55:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:27,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:27,374 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:27,377 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:36,078 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:36,145 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:36,145 INFO L309 CfgBuilder]: Removed 62 assume(true) statements. [2023-11-26 11:55:36,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:36 BoogieIcfgContainer [2023-11-26 11:55:36,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:36,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:36,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:36,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:36,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:25" (1/3) ... [2023-11-26 11:55:36,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473e8ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:36, skipping insertion in model container [2023-11-26 11:55:36,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:26" (2/3) ... [2023-11-26 11:55:36,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@473e8ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:36, skipping insertion in model container [2023-11-26 11:55:36,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:36" (3/3) ... [2023-11-26 11:55:36,158 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test8-1.i [2023-11-26 11:55:36,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:36,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:55:36,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:36,257 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@910d4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:36,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:55:36,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 203 states have (on average 1.6847290640394088) internal successors, (342), 222 states have internal predecessors, (342), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 11:55:36,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:55:36,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:36,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:55:36,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:36,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:36,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1089719714, now seen corresponding path program 1 times [2023-11-26 11:55:36,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:36,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880469797] [2023-11-26 11:55:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:36,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:36,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:36,305 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:36,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:55:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:36,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-26 11:55:36,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:36,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:36,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:36,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880469797] [2023-11-26 11:55:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880469797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:36,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:36,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:36,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621253227] [2023-11-26 11:55:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:36,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:55:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:55:36,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:55:36,627 INFO L87 Difference]: Start difference. First operand has 232 states, 203 states have (on average 1.6847290640394088) internal successors, (342), 222 states have internal predecessors, (342), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) 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) [2023-11-26 11:55:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:36,730 INFO L93 Difference]: Finished difference Result 230 states and 315 transitions. [2023-11-26 11:55:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:55:36,734 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 [2023-11-26 11:55:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:36,751 INFO L225 Difference]: With dead ends: 230 [2023-11-26 11:55:36,751 INFO L226 Difference]: Without dead ends: 229 [2023-11-26 11:55:36,753 INFO L412 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 [2023-11-26 11:55:36,757 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:36,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 310 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:36,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-26 11:55:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2023-11-26 11:55:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 202 states have (on average 1.3465346534653466) internal successors, (272), 219 states have internal predecessors, (272), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:55:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 314 transitions. [2023-11-26 11:55:36,816 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 314 transitions. Word has length 6 [2023-11-26 11:55:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:36,817 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 314 transitions. [2023-11-26 11:55:36,817 INFO L496 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) [2023-11-26 11:55:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 314 transitions. [2023-11-26 11:55:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:55:36,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:36,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:36,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 11:55:37,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:37,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:37,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:37,022 INFO L85 PathProgramCache]: Analyzing trace with hash -168255391, now seen corresponding path program 1 times [2023-11-26 11:55:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:37,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324634593] [2023-11-26 11:55:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:37,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:37,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:37,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:37,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-26 11:55:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:37,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:55:37,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:37,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:55:37,304 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:55:37,305 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:55:37,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-26 11:55:37,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:55:37,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-26 11:55:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:37,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:37,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324634593] [2023-11-26 11:55:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324634593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:37,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:37,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:55:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495086193] [2023-11-26 11:55:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:37,467 INFO L87 Difference]: Start difference. First operand 229 states and 314 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:38,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:38,264 INFO L93 Difference]: Finished difference Result 410 states and 552 transitions. [2023-11-26 11:55:38,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:38,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-26 11:55:38,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:38,270 INFO L225 Difference]: With dead ends: 410 [2023-11-26 11:55:38,270 INFO L226 Difference]: Without dead ends: 410 [2023-11-26 11:55:38,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:38,272 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 224 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:38,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 866 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:55:38,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-11-26 11:55:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 231. [2023-11-26 11:55:38,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 204 states have (on average 1.3431372549019607) internal successors, (274), 221 states have internal predecessors, (274), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:55:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 316 transitions. [2023-11-26 11:55:38,308 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 316 transitions. Word has length 8 [2023-11-26 11:55:38,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:38,309 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 316 transitions. [2023-11-26 11:55:38,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:38,310 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 316 transitions. [2023-11-26 11:55:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:55:38,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:38,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:38,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-26 11:55:38,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:38,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:38,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:38,519 INFO L85 PathProgramCache]: Analyzing trace with hash -384416785, now seen corresponding path program 1 times [2023-11-26 11:55:38,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:38,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849497274] [2023-11-26 11:55:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:38,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:38,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:38,525 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:38,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-26 11:55:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:55:39,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:39,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:39,053 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:39,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:39,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849497274] [2023-11-26 11:55:39,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849497274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:39,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:39,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:39,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990790017] [2023-11-26 11:55:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:39,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:39,058 INFO L87 Difference]: Start difference. First operand 231 states and 316 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:39,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:39,285 INFO L93 Difference]: Finished difference Result 235 states and 312 transitions. [2023-11-26 11:55:39,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:39,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-26 11:55:39,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:39,290 INFO L225 Difference]: With dead ends: 235 [2023-11-26 11:55:39,290 INFO L226 Difference]: Without dead ends: 235 [2023-11-26 11:55:39,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:39,292 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 36 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:39,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 819 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:55:39,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-26 11:55:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2023-11-26 11:55:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 207 states have (on average 1.2995169082125604) internal successors, (269), 224 states have internal predecessors, (269), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 11:55:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 311 transitions. [2023-11-26 11:55:39,311 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 311 transitions. Word has length 66 [2023-11-26 11:55:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:39,312 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 311 transitions. [2023-11-26 11:55:39,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 311 transitions. [2023-11-26 11:55:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:55:39,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:39,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:39,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:39,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:39,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:39,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:39,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1869243619, now seen corresponding path program 1 times [2023-11-26 11:55:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066568306] [2023-11-26 11:55:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:39,525 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:39,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:39,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:39,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-26 11:55:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:55:39,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:40,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:40,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:40,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066568306] [2023-11-26 11:55:40,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066568306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:40,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:40,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:55:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512438298] [2023-11-26 11:55:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:40,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:40,367 INFO L87 Difference]: Start difference. First operand 234 states and 311 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:41,320 INFO L93 Difference]: Finished difference Result 349 states and 452 transitions. [2023-11-26 11:55:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-26 11:55:41,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:41,324 INFO L225 Difference]: With dead ends: 349 [2023-11-26 11:55:41,324 INFO L226 Difference]: Without dead ends: 349 [2023-11-26 11:55:41,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:55:41,326 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 100 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:41,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 615 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:55:41,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-26 11:55:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 344. [2023-11-26 11:55:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 316 states have (on average 1.2784810126582278) internal successors, (404), 333 states have internal predecessors, (404), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 11:55:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 448 transitions. [2023-11-26 11:55:41,346 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 448 transitions. Word has length 66 [2023-11-26 11:55:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:41,346 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 448 transitions. [2023-11-26 11:55:41,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:55:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 448 transitions. [2023-11-26 11:55:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 11:55:41,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:41,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:41,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:41,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:41,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:41,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1910426386, now seen corresponding path program 1 times [2023-11-26 11:55:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788435862] [2023-11-26 11:55:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:41,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:41,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:41,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:41,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-26 11:55:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:55:42,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:55:42,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:42,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:42,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788435862] [2023-11-26 11:55:42,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788435862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:42,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:42,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:55:42,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792042184] [2023-11-26 11:55:42,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:42,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:42,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:55:42,205 INFO L87 Difference]: Start difference. First operand 344 states and 448 transitions. Second operand has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:55:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:42,326 INFO L93 Difference]: Finished difference Result 346 states and 451 transitions. [2023-11-26 11:55:42,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:55:42,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2023-11-26 11:55:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:42,330 INFO L225 Difference]: With dead ends: 346 [2023-11-26 11:55:42,330 INFO L226 Difference]: Without dead ends: 346 [2023-11-26 11:55:42,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:42,332 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 1 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:42,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 887 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:42,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-11-26 11:55:42,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-11-26 11:55:42,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 317 states have (on average 1.2807570977917981) internal successors, (406), 335 states have internal predecessors, (406), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-26 11:55:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 451 transitions. [2023-11-26 11:55:42,347 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 451 transitions. Word has length 79 [2023-11-26 11:55:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:42,347 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 451 transitions. [2023-11-26 11:55:42,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:55:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 451 transitions. [2023-11-26 11:55:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-26 11:55:42,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:42,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:42,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:42,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:42,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:42,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:42,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1629368750, now seen corresponding path program 1 times [2023-11-26 11:55:42,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132938769] [2023-11-26 11:55:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:42,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:42,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:42,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:42,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-26 11:55:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:55:43,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:55:43,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:43,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:43,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132938769] [2023-11-26 11:55:43,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132938769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:43,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:55:43,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-26 11:55:43,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398477229] [2023-11-26 11:55:43,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:43,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:55:43,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:43,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:55:43,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:43,374 INFO L87 Difference]: Start difference. First operand 346 states and 451 transitions. Second operand has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:55:43,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:43,680 INFO L93 Difference]: Finished difference Result 355 states and 465 transitions. [2023-11-26 11:55:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:55:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 81 [2023-11-26 11:55:43,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:43,684 INFO L225 Difference]: With dead ends: 355 [2023-11-26 11:55:43,684 INFO L226 Difference]: Without dead ends: 355 [2023-11-26 11:55:43,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:55:43,685 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 6 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:43,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 887 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:55:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-26 11:55:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 354. [2023-11-26 11:55:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 324 states have (on average 1.2932098765432098) internal successors, (419), 342 states have internal predecessors, (419), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-26 11:55:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 464 transitions. [2023-11-26 11:55:43,700 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 464 transitions. Word has length 81 [2023-11-26 11:55:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:43,701 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 464 transitions. [2023-11-26 11:55:43,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.333333333333334) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:55:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 464 transitions. [2023-11-26 11:55:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-26 11:55:43,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:43,703 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:43,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:43,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:43,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:43,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1941505074, now seen corresponding path program 2 times [2023-11-26 11:55:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:43,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419931923] [2023-11-26 11:55:43,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:55:43,913 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:43,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:43,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:43,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-26 11:55:45,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:55:45,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:55:45,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:55:45,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:55:45,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:55:45,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:45,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419931923] [2023-11-26 11:55:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419931923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:45,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:55:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-26 11:55:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604422404] [2023-11-26 11:55:45,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:45,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:55:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:55:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:45,823 INFO L87 Difference]: Start difference. First operand 354 states and 464 transitions. Second operand has 10 states, 8 states have (on average 9.875) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:55:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:46,314 INFO L93 Difference]: Finished difference Result 361 states and 475 transitions. [2023-11-26 11:55:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:55:46,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.875) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 85 [2023-11-26 11:55:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:46,319 INFO L225 Difference]: With dead ends: 361 [2023-11-26 11:55:46,319 INFO L226 Difference]: Without dead ends: 361 [2023-11-26 11:55:46,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:55:46,321 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 12 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:46,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1177 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:55:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-26 11:55:46,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 358. [2023-11-26 11:55:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 328 states have (on average 1.3018292682926829) internal successors, (427), 346 states have internal predecessors, (427), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-26 11:55:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 472 transitions. [2023-11-26 11:55:46,339 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 472 transitions. Word has length 85 [2023-11-26 11:55:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:46,340 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 472 transitions. [2023-11-26 11:55:46,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.875) internal successors, (79), 10 states have internal predecessors, (79), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:55:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 472 transitions. [2023-11-26 11:55:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-26 11:55:46,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:46,342 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:46,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:46,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:46,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:46,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1871370510, now seen corresponding path program 3 times [2023-11-26 11:55:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468500498] [2023-11-26 11:55:46,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:55:46,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:46,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:46,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:46,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-26 11:55:50,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-26 11:55:50,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:55:50,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:55:50,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:55:50,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:51,134 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:55:51,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:51,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468500498] [2023-11-26 11:55:51,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468500498] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:51,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:55:51,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-11-26 11:55:51,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863526799] [2023-11-26 11:55:51,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:51,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:55:51,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:55:51,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:55:51,139 INFO L87 Difference]: Start difference. First operand 358 states and 472 transitions. Second operand has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:55:52,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:52,751 INFO L93 Difference]: Finished difference Result 379 states and 502 transitions. [2023-11-26 11:55:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-26 11:55:52,752 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 89 [2023-11-26 11:55:52,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:52,756 INFO L225 Difference]: With dead ends: 379 [2023-11-26 11:55:52,756 INFO L226 Difference]: Without dead ends: 377 [2023-11-26 11:55:52,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=369, Invalid=687, Unknown=0, NotChecked=0, Total=1056 [2023-11-26 11:55:52,758 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 23 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:52,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2340 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 11:55:52,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-26 11:55:52,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2023-11-26 11:55:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 339 states have (on average 1.3185840707964602) internal successors, (447), 357 states have internal predecessors, (447), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-26 11:55:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 492 transitions. [2023-11-26 11:55:52,783 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 492 transitions. Word has length 89 [2023-11-26 11:55:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:52,784 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 492 transitions. [2023-11-26 11:55:52,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 18 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:55:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 492 transitions. [2023-11-26 11:55:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 11:55:52,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:52,785 INFO L195 NwaCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:52,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:52,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:52,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:52,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1011921806, now seen corresponding path program 4 times [2023-11-26 11:55:52,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:52,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995278109] [2023-11-26 11:55:52,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:55:52,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:52,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:52,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:52,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-26 11:55:53,687 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:55:53,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:55:53,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:55:53,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 77 proven. 10 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-26 11:55:53,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-26 11:55:54,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:54,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995278109] [2023-11-26 11:55:54,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995278109] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:54,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:55:54,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-26 11:55:54,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870776432] [2023-11-26 11:55:54,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:54,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:55:54,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:54,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:55:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:55:54,091 INFO L87 Difference]: Start difference. First operand 369 states and 492 transitions. Second operand has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 14 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:55:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:54,973 INFO L93 Difference]: Finished difference Result 379 states and 503 transitions. [2023-11-26 11:55:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:55:54,974 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 14 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2023-11-26 11:55:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:54,976 INFO L225 Difference]: With dead ends: 379 [2023-11-26 11:55:54,977 INFO L226 Difference]: Without dead ends: 377 [2023-11-26 11:55:54,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:55:54,978 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 13 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:54,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1769 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:55:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-11-26 11:55:54,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 372. [2023-11-26 11:55:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 342 states have (on average 1.3099415204678362) internal successors, (448), 360 states have internal predecessors, (448), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-26 11:55:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 493 transitions. [2023-11-26 11:55:54,993 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 493 transitions. Word has length 97 [2023-11-26 11:55:54,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:54,993 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 493 transitions. [2023-11-26 11:55:54,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.166666666666667) internal successors, (86), 14 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:55:54,994 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 493 transitions. [2023-11-26 11:55:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 11:55:54,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:54,996 INFO L195 NwaCegarLoop]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:55,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:55,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:55,206 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:55:55,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1118389778, now seen corresponding path program 5 times [2023-11-26 11:55:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:55:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580792854] [2023-11-26 11:55:55,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:55:55,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:55:55,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:55:55,212 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:55:55,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-26 11:55:56,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-11-26 11:55:56,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:55:56,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:55:56,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 167 proven. 55 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-26 11:55:57,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:55:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-26 11:55:57,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:55:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580792854] [2023-11-26 11:55:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580792854] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:55:57,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:55:57,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-26 11:55:57,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791605684] [2023-11-26 11:55:57,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:55:57,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:55:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:55:57,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:55:57,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:55:57,874 INFO L87 Difference]: Start difference. First operand 372 states and 493 transitions. Second operand has 26 states, 24 states have (on average 4.083333333333333) internal successors, (98), 26 states have internal predecessors, (98), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:56:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:56:01,217 INFO L93 Difference]: Finished difference Result 396 states and 527 transitions. [2023-11-26 11:56:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-26 11:56:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.083333333333333) internal successors, (98), 26 states have internal predecessors, (98), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 103 [2023-11-26 11:56:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:56:01,221 INFO L225 Difference]: With dead ends: 396 [2023-11-26 11:56:01,221 INFO L226 Difference]: Without dead ends: 394 [2023-11-26 11:56:01,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=998, Invalid=2194, Unknown=0, NotChecked=0, Total=3192 [2023-11-26 11:56:01,224 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 23 mSDsluCounter, 3821 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:56:01,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4118 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:56:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-26 11:56:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 384. [2023-11-26 11:56:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 354 states have (on average 1.2994350282485876) internal successors, (460), 372 states have internal predecessors, (460), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-26 11:56:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 505 transitions. [2023-11-26 11:56:01,239 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 505 transitions. Word has length 103 [2023-11-26 11:56:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:56:01,239 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 505 transitions. [2023-11-26 11:56:01,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.083333333333333) internal successors, (98), 26 states have internal predecessors, (98), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:56:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 505 transitions. [2023-11-26 11:56:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-26 11:56:01,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:56:01,241 INFO L195 NwaCegarLoop]: trace histogram [36, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:56:01,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:56:01,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:01,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:56:01,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:56:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash -924455250, now seen corresponding path program 6 times [2023-11-26 11:56:01,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:56:01,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918458485] [2023-11-26 11:56:01,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-26 11:56:01,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:56:01,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:56:01,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:56:01,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06d5679-bc33-4a25-ab29-8568471cdf2d/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-26 11:56:06,337 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-26 11:56:06,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:56:06,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-26 11:56:06,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:56:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 347 proven. 253 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-26 11:56:07,166 INFO L327 TraceCheckSpWp]: Computing backward predicates...