./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:44,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:44,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-23 21:32:44,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:44,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:44,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:44,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:44,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:44,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:44,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:44,938 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:44,938 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:44,939 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:44,939 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:32:44,940 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:44,940 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:44,941 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:32:44,941 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:32:44,942 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:44,943 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:32:44,943 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:32:44,944 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:32:44,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:44,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:44,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:44,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:44,947 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:44,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:44,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:44,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:44,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:44,951 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:44,951 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:44,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:44,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:44,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:44,953 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:44,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:44,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:44,954 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:44,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:44,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:44,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:44,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:44,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:44,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:44,957 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:32:44,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:32:44,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:44,958 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:44,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:44,959 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 [2023-11-23 21:32:45,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:45,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:45,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:45,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:45,332 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:45,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2023-11-23 21:32:48,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:48,844 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:48,845 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2023-11-23 21:32:48,884 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data/4558a0861/9d6584e7d4074dd793a1d14d55e97848/FLAG60bcecd28 [2023-11-23 21:32:48,899 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data/4558a0861/9d6584e7d4074dd793a1d14d55e97848 [2023-11-23 21:32:48,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:48,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:48,904 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:48,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:48,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:48,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:48" (1/1) ... [2023-11-23 21:32:48,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509c39f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:48, skipping insertion in model container [2023-11-23 21:32:48,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:48" (1/1) ... [2023-11-23 21:32:48,997 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:49,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:49,694 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) [2023-11-23 21:32:49,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@642fdcb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:49, skipping insertion in model container [2023-11-23 21:32:49,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:49,706 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:32:49,708 INFO L158 Benchmark]: Toolchain (without parser) took 804.64ms. Allocated memory is still 146.8MB. Free memory was 98.7MB in the beginning and 78.4MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:32:49,709 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 146.8MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:32:49,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 802.12ms. Allocated memory is still 146.8MB. Free memory was 98.2MB in the beginning and 78.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:32:49,711 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 146.8MB. Free memory is still 87.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 802.12ms. Allocated memory is still 146.8MB. Free memory was 98.2MB in the beginning and 78.4MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:32:52,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:32:52,485 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-23 21:32:52,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:32:52,495 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:32:52,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:32:52,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:32:52,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:32:52,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:32:52,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:32:52,557 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:32:52,558 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:32:52,559 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:32:52,560 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:32:52,560 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:32:52,560 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:32:52,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:32:52,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:32:52,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:32:52,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:32:52,563 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:32:52,564 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:32:52,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:32:52,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:32:52,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:32:52,566 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:32:52,566 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:32:52,567 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:32:52,567 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:32:52,568 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:32:52,569 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:32:52,570 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:32:52,570 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:32:52,570 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:32:52,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:32:52,571 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:32:52,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:32:52,572 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:32:52,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:32:52,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:32:52,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:52,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:32:52,574 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:32:52,574 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:32:52,575 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:32:52,575 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:32:52,576 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:32:52,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:32:52,576 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b41ff920513b74db566933dfdd7430dbdb0b5764645b98d18d29abf93fb4135 [2023-11-23 21:32:52,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:32:53,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:32:53,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:32:53,020 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:32:53,021 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:32:53,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2023-11-23 21:32:56,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:32:56,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:32:56,580 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-2.i [2023-11-23 21:32:56,613 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data/eb5e70537/b26440db690441058d0127d9a80b3d0c/FLAG19b95fa29 [2023-11-23 21:32:56,636 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/data/eb5e70537/b26440db690441058d0127d9a80b3d0c [2023-11-23 21:32:56,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:32:56,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:32:56,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:56,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:32:56,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:32:56,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:56" (1/1) ... [2023-11-23 21:32:56,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a6c7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:56, skipping insertion in model container [2023-11-23 21:32:56,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:32:56" (1/1) ... [2023-11-23 21:32:56,767 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:57,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:57,629 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:32:57,647 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:32:57,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:57,777 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:32:57,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:32:58,030 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:32:58,039 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:32:58,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58 WrapperNode [2023-11-23 21:32:58,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:32:58,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:58,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:32:58,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:32:58,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,208 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1045 [2023-11-23 21:32:58,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:32:58,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:32:58,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:32:58,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:32:58,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:32:58,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:32:58,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:32:58,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:32:58,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (1/1) ... [2023-11-23 21:32:58,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:32:58,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:32:58,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:32:58,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:32:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:32:58,487 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:32:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:32:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:32:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:32:58,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:32:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:32:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:32:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:32:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:32:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:32:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:32:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:32:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:32:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:32:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:32:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:32:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:32:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:32:58,767 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:32:58,770 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:33:05,743 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:33:05,814 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:33:05,815 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-23 21:33:05,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:05 BoogieIcfgContainer [2023-11-23 21:33:05,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:33:05,818 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:33:05,818 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:33:05,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:33:05,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:32:56" (1/3) ... [2023-11-23 21:33:05,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307c21b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:05, skipping insertion in model container [2023-11-23 21:33:05,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:32:58" (2/3) ... [2023-11-23 21:33:05,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@307c21b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:05, skipping insertion in model container [2023-11-23 21:33:05,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:05" (3/3) ... [2023-11-23 21:33:05,827 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-2.i [2023-11-23 21:33:05,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:33:05,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:33:05,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:33:05,922 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=FINITE_AUTOMATA, 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;@7eaa9543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:33:05,923 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:33:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:33:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:33:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:05,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:05,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:05,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash 588329387, now seen corresponding path program 1 times [2023-11-23 21:33:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:05,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526372062] [2023-11-23 21:33:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:05,968 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 [2023-11-23 21:33:05,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:05,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:06,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:06,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:33:06,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:06,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:06,258 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526372062] [2023-11-23 21:33:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526372062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:06,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:06,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107862829] [2023-11-23 21:33:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:06,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:33:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:33:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:33:06,306 INFO L87 Difference]: Start difference. First operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:06,374 INFO L93 Difference]: Finished difference Result 210 states and 277 transitions. [2023-11-23 21:33:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:33:06,377 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-23 21:33:06,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:06,395 INFO L225 Difference]: With dead ends: 210 [2023-11-23 21:33:06,395 INFO L226 Difference]: Without dead ends: 209 [2023-11-23 21:33:06,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:33:06,402 INFO L413 NwaCegarLoop]: 272 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, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:06,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:33:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-23 21:33:06,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-23 21:33:06,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 195 states have (on average 1.323076923076923) internal successors, (258), 202 states have internal predecessors, (258), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:33:06,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 276 transitions. [2023-11-23 21:33:06,471 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 276 transitions. Word has length 10 [2023-11-23 21:33:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:06,472 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 276 transitions. [2023-11-23 21:33:06,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 276 transitions. [2023-11-23 21:33:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:33:06,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:06,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:06,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:06,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:06,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:06,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:06,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2000743177, now seen corresponding path program 1 times [2023-11-23 21:33:06,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:06,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399997124] [2023-11-23 21:33:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:06,679 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 [2023-11-23 21:33:06,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:06,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:06,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:06,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:06,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:06,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:06,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:06,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399997124] [2023-11-23 21:33:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399997124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:33:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824657813] [2023-11-23 21:33:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:06,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:06,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:06,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:06,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:06,984 INFO L87 Difference]: Start difference. First operand 209 states and 276 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:07,985 INFO L93 Difference]: Finished difference Result 339 states and 452 transitions. [2023-11-23 21:33:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:07,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 21:33:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:07,992 INFO L225 Difference]: With dead ends: 339 [2023-11-23 21:33:07,993 INFO L226 Difference]: Without dead ends: 339 [2023-11-23 21:33:07,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:07,998 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 163 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:07,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 499 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:33:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-23 21:33:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 308. [2023-11-23 21:33:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.328719723183391) internal successors, (384), 301 states have internal predecessors, (384), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:33:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 412 transitions. [2023-11-23 21:33:08,061 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 412 transitions. Word has length 12 [2023-11-23 21:33:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:08,061 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 412 transitions. [2023-11-23 21:33:08,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 412 transitions. [2023-11-23 21:33:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:33:08,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:08,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:08,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:08,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:08,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2002590219, now seen corresponding path program 1 times [2023-11-23 21:33:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:08,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179892948] [2023-11-23 21:33:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:08,272 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 [2023-11-23 21:33:08,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:08,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:08,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:08,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:33:08,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:08,616 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:08,617 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:08,618 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:08,632 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 [2023-11-23 21:33:08,732 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:08,733 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 [2023-11-23 21:33:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:08,762 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:08,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179892948] [2023-11-23 21:33:08,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179892948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:08,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:08,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:33:08,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768069838] [2023-11-23 21:33:08,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:08,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:08,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:08,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:08,766 INFO L87 Difference]: Start difference. First operand 308 states and 412 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:13,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:15,656 INFO L93 Difference]: Finished difference Result 419 states and 572 transitions. [2023-11-23 21:33:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 21:33:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:15,660 INFO L225 Difference]: With dead ends: 419 [2023-11-23 21:33:15,660 INFO L226 Difference]: Without dead ends: 419 [2023-11-23 21:33:15,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:15,662 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 168 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:15,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 674 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2023-11-23 21:33:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-23 21:33:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 307. [2023-11-23 21:33:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 300 states have internal predecessors, (382), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:33:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 410 transitions. [2023-11-23 21:33:15,686 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 410 transitions. Word has length 12 [2023-11-23 21:33:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:15,686 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 410 transitions. [2023-11-23 21:33:15,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:33:15,687 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 410 transitions. [2023-11-23 21:33:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 21:33:15,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:15,691 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] [2023-11-23 21:33:15,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-23 21:33:15,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:15,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:15,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -560959006, now seen corresponding path program 1 times [2023-11-23 21:33:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599356781] [2023-11-23 21:33:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:15,898 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 [2023-11-23 21:33:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:15,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:15,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:16,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:16,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:16,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:33:16,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:16,600 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:16,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599356781] [2023-11-23 21:33:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599356781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:16,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:16,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505769121] [2023-11-23 21:33:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:16,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:16,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:16,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:16,607 INFO L87 Difference]: Start difference. First operand 307 states and 410 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:16,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:16,822 INFO L93 Difference]: Finished difference Result 315 states and 402 transitions. [2023-11-23 21:33:16,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:16,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-23 21:33:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:16,826 INFO L225 Difference]: With dead ends: 315 [2023-11-23 21:33:16,826 INFO L226 Difference]: Without dead ends: 315 [2023-11-23 21:33:16,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:16,828 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 705 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 [2023-11-23 21:33:16,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 705 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:33:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-23 21:33:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2023-11-23 21:33:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 294 states have (on average 1.2653061224489797) internal successors, (372), 306 states have internal predecessors, (372), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:33:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 400 transitions. [2023-11-23 21:33:16,844 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 400 transitions. Word has length 81 [2023-11-23 21:33:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:16,845 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 400 transitions. [2023-11-23 21:33:16,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 400 transitions. [2023-11-23 21:33:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 21:33:16,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:16,850 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] [2023-11-23 21:33:16,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:17,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:17,062 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:17,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash -484998930, now seen corresponding path program 1 times [2023-11-23 21:33:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:17,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016462908] [2023-11-23 21:33:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:17,064 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 [2023-11-23 21:33:17,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:17,066 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:17,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:17,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:33:17,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:17,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:17,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:17,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:17,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016462908] [2023-11-23 21:33:17,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016462908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:17,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:17,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:33:17,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180201913] [2023-11-23 21:33:17,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:17,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:17,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:17,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:17,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:33:17,725 INFO L87 Difference]: Start difference. First operand 313 states and 400 transitions. Second operand has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:33:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:17,853 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2023-11-23 21:33:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:33:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2023-11-23 21:33:17,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:17,857 INFO L225 Difference]: With dead ends: 315 [2023-11-23 21:33:17,857 INFO L226 Difference]: Without dead ends: 315 [2023-11-23 21:33:17,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:17,859 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 773 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 [2023-11-23 21:33:17,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 773 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:33:17,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-23 21:33:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-11-23 21:33:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 295 states have (on average 1.2677966101694915) internal successors, (374), 308 states have internal predecessors, (374), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-23 21:33:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 403 transitions. [2023-11-23 21:33:17,875 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 403 transitions. Word has length 81 [2023-11-23 21:33:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:17,877 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 403 transitions. [2023-11-23 21:33:17,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:33:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 403 transitions. [2023-11-23 21:33:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 21:33:17,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:17,882 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2023-11-23 21:33:17,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:18,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:18,093 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:18,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash -933938814, now seen corresponding path program 1 times [2023-11-23 21:33:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94328695] [2023-11-23 21:33:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:18,095 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 [2023-11-23 21:33:18,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:18,096 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:18,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:18,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:18,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:33:18,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:18,971 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:18,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94328695] [2023-11-23 21:33:18,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94328695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:18,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [833031254] [2023-11-23 21:33:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:18,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:18,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:33:18,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:33:18,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-23 21:33:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:19,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:19,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:33:20,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:20,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [833031254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:20,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:33:20,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-23 21:33:20,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014568368] [2023-11-23 21:33:20,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:20,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:20,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:20,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:20,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:33:20,034 INFO L87 Difference]: Start difference. First operand 315 states and 403 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:22,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:24,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:28,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:29,006 INFO L93 Difference]: Finished difference Result 328 states and 410 transitions. [2023-11-23 21:33:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:33:29,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-11-23 21:33:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:29,009 INFO L225 Difference]: With dead ends: 328 [2023-11-23 21:33:29,010 INFO L226 Difference]: Without dead ends: 328 [2023-11-23 21:33:29,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:33:29,011 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 432 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:29,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 425 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2023-11-23 21:33:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-23 21:33:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2023-11-23 21:33:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 244 states have (on average 1.2336065573770492) internal successors, (301), 252 states have internal predecessors, (301), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-23 21:33:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions. [2023-11-23 21:33:29,022 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 83 [2023-11-23 21:33:29,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:29,023 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 320 transitions. [2023-11-23 21:33:29,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions. [2023-11-23 21:33:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 21:33:29,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:29,025 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:29,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:29,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:29,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:29,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:29,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:29,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1995822790, now seen corresponding path program 1 times [2023-11-23 21:33:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81253933] [2023-11-23 21:33:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:29,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:33:29,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:29,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:29,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:30,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:30,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:30,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:33:30,301 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:30,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81253933] [2023-11-23 21:33:30,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81253933] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:30,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1060229518] [2023-11-23 21:33:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:30,302 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:33:30,321 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:33:30,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-23 21:33:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:31,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:31,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:31,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:33:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1060229518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480618884] [2023-11-23 21:33:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:31,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:31,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:33:31,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:31,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:33:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:32,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:33:32,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:33:32,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:32,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480618884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:32,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-23 21:33:32,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-11-23 21:33:32,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243722664] [2023-11-23 21:33:32,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:32,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:33:32,153 INFO L87 Difference]: Start difference. First operand 259 states and 320 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:34,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:36,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:39,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-23 21:33:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:33:40,991 INFO L93 Difference]: Finished difference Result 261 states and 322 transitions. [2023-11-23 21:33:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:33:40,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-11-23 21:33:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:33:40,994 INFO L225 Difference]: With dead ends: 261 [2023-11-23 21:33:40,994 INFO L226 Difference]: Without dead ends: 261 [2023-11-23 21:33:40,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:33:40,995 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 225 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:33:40,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 469 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2023-11-23 21:33:40,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-23 21:33:41,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2023-11-23 21:33:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.2326530612244897) internal successors, (302), 253 states have internal predecessors, (302), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-23 21:33:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2023-11-23 21:33:41,005 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 92 [2023-11-23 21:33:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:33:41,006 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2023-11-23 21:33:41,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:33:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2023-11-23 21:33:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 21:33:41,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:33:41,008 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:41,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-23 21:33:41,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:41,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:33:41,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:41,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:33:41,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1997669832, now seen corresponding path program 1 times [2023-11-23 21:33:41,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:33:41,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372269728] [2023-11-23 21:33:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:41,620 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 [2023-11-23 21:33:41,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:33:41,621 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:33:41,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:33:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:42,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:42,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:42,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:33:42,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:33:42,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372269728] [2023-11-23 21:33:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372269728] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:42,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [269705078] [2023-11-23 21:33:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:42,582 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:33:42,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:33:42,586 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:33:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-23 21:33:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:43,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:33:43,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:33:43,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:33:43,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:33:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [269705078] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:33:43,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787086995] [2023-11-23 21:33:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:43,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:33:43,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:33:43,778 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:33:43,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10a3940c-4e30-42cc-925e-e8fe9d7a9071/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:33:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:44,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:33:44,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:33:44,480 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:44,481 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:44,481 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:33:44,487 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 [2023-11-23 21:33:44,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:33:44,603 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 [2023-11-23 21:33:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:33:44,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:33:44,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787086995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:44,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-23 21:33:44,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-11-23 21:33:44,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765470529] [2023-11-23 21:33:44,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:44,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:33:44,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:33:44,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:33:44,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:33:44,644 INFO L87 Difference]: Start difference. First operand 260 states and 321 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)