./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh --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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:22:39,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:22:40,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 08:22:40,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:22:40,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:22:40,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:22:40,071 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:22:40,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:22:40,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:22:40,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:22:40,074 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:22:40,074 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:22:40,075 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:22:40,075 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 08:22:40,076 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:22:40,076 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:22:40,077 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 08:22:40,077 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 08:22:40,078 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:22:40,078 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 08:22:40,079 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 08:22:40,080 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 08:22:40,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 08:22:40,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 08:22:40,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:22:40,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:22:40,082 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:22:40,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:22:40,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:22:40,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:22:40,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:22:40,085 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 08:22:40,085 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 08:22:40,085 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:22:40,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:22:40,085 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 08:22:40,086 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 08:22:40,086 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:22:40,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:22:40,086 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:22:40,087 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:22:40,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:22:40,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:22:40,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:22:40,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:22:40,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:22:40,088 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 08:22:40,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 08:22:40,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:22:40,089 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:22:40,089 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:22:40,089 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_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2023-12-02 08:22:40,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:22:40,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:22:40,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:22:40,336 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:22:40,336 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:22:40,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-12-02 08:22:43,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:22:43,389 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:22:43,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-12-02 08:22:43,409 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data/6161ed148/fc2063cbef2f487a8b3836f943bc8817/FLAG2de6ec386 [2023-12-02 08:22:43,421 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data/6161ed148/fc2063cbef2f487a8b3836f943bc8817 [2023-12-02 08:22:43,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:22:43,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:22:43,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:22:43,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:22:43,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:22:43,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:22:43" (1/1) ... [2023-12-02 08:22:43,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34aaa38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:43, skipping insertion in model container [2023-12-02 08:22:43,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:22:43" (1/1) ... [2023-12-02 08:22:43,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:22:44,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:22:44,114 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) [2023-12-02 08:22:44,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ce52941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:44, skipping insertion in model container [2023-12-02 08:22:44,114 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:22:44,115 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 08:22:44,117 INFO L158 Benchmark]: Toolchain (without parser) took 691.28ms. Allocated memory is still 140.5MB. Free memory was 104.7MB in the beginning and 71.8MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 08:22:44,117 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 08:22:44,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.25ms. Allocated memory is still 140.5MB. Free memory was 104.7MB in the beginning and 71.8MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 08:22:44,119 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.25ms. Allocated memory is still 140.5MB. Free memory was 104.7MB in the beginning and 71.8MB in the end (delta: 32.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh --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 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 08:22:45,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 08:22:45,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 08:22:45,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 08:22:45,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 08:22:45,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 08:22:45,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 08:22:45,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 08:22:45,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 08:22:45,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 08:22:45,931 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 08:22:45,931 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 08:22:45,932 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 08:22:45,933 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 08:22:45,933 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 08:22:45,934 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 08:22:45,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 08:22:45,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 08:22:45,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 08:22:45,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 08:22:45,937 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 08:22:45,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 08:22:45,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 08:22:45,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 08:22:45,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 08:22:45,939 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 08:22:45,940 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 08:22:45,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 08:22:45,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 08:22:45,941 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 08:22:45,941 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 08:22:45,942 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 08:22:45,942 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 08:22:45,942 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 08:22:45,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 08:22:45,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 08:22:45,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 08:22:45,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 08:22:45,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 08:22:45,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 08:22:45,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:22:45,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 08:22:45,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 08:22:45,945 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 08:22:45,945 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 08:22:45,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 08:22:45,946 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 08:22:45,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 08:22:45,946 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_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 501447f5c37550c3f5e8fdfcef22269dce5065ef789f4faf9fbe7fcfc263a044 [2023-12-02 08:22:46,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 08:22:46,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 08:22:46,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 08:22:46,248 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 08:22:46,249 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 08:22:46,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-12-02 08:22:48,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 08:22:49,344 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 08:22:49,345 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-1.i [2023-12-02 08:22:49,367 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data/bc7125ab8/152ea74932144f97afb4f457c071a390/FLAG38df98d1b [2023-12-02 08:22:49,382 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/data/bc7125ab8/152ea74932144f97afb4f457c071a390 [2023-12-02 08:22:49,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 08:22:49,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 08:22:49,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 08:22:49,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 08:22:49,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 08:22:49,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:22:49" (1/1) ... [2023-12-02 08:22:49,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e38f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:49, skipping insertion in model container [2023-12-02 08:22:49,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:22:49" (1/1) ... [2023-12-02 08:22:49,480 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:22:50,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:22:50,203 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 08:22:50,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 08:22:50,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:22:50,351 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 08:22:50,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 08:22:50,502 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 08:22:50,510 INFO L206 MainTranslator]: Completed translation [2023-12-02 08:22:50,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50 WrapperNode [2023-12-02 08:22:50,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 08:22:50,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 08:22:50,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 08:22:50,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 08:22:50,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,648 INFO L138 Inliner]: procedures = 180, calls = 732, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2867 [2023-12-02 08:22:50,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 08:22:50,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 08:22:50,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 08:22:50,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 08:22:50,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,776 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 08:22:50,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 08:22:50,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 08:22:50,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 08:22:50,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (1/1) ... [2023-12-02 08:22:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 08:22:50,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:22:50,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 08:22:50,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 08:22:50,869 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 08:22:50,870 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 08:22:50,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 08:22:50,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 08:22:50,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 08:22:50,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 08:22:50,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 08:22:50,871 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 08:22:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 08:22:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 08:22:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 08:22:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 08:22:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 08:22:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 08:22:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 08:22:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 08:22:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 08:22:50,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 08:22:50,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 08:22:51,045 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 08:22:51,047 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 08:22:59,691 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 08:22:59,743 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 08:22:59,743 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-12-02 08:22:59,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:22:59 BoogieIcfgContainer [2023-12-02 08:22:59,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 08:22:59,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 08:22:59,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 08:22:59,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 08:22:59,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:22:49" (1/3) ... [2023-12-02 08:22:59,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b30818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:22:59, skipping insertion in model container [2023-12-02 08:22:59,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:22:50" (2/3) ... [2023-12-02 08:22:59,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b30818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:22:59, skipping insertion in model container [2023-12-02 08:22:59,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:22:59" (3/3) ... [2023-12-02 08:22:59,753 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-1.i [2023-12-02 08:22:59,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 08:22:59,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 08:22:59,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 08:22:59,876 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;@6bb251dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 08:22:59,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 08:22:59,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 1172 states, 661 states have (on average 1.91981845688351) internal successors, (1269), 1165 states have internal predecessors, (1269), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2023-12-02 08:22:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 08:22:59,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:22:59,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 08:22:59,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:22:59,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:22:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1533051042, now seen corresponding path program 1 times [2023-12-02 08:22:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:22:59,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034264706] [2023-12-02 08:22:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:22:59,911 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 [2023-12-02 08:22:59,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:22:59,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:22:59,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:00,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 08:23:00,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:23:00,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:00,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034264706] [2023-12-02 08:23:00,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034264706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:00,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:00,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:23:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272995560] [2023-12-02 08:23:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:00,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 08:23:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 08:23:00,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:23:00,167 INFO L87 Difference]: Start difference. First operand has 1172 states, 661 states have (on average 1.91981845688351) internal successors, (1269), 1165 states have internal predecessors, (1269), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:23:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:00,295 INFO L93 Difference]: Finished difference Result 1170 states and 2216 transitions. [2023-12-02 08:23:00,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 08:23:00,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 08:23:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:00,325 INFO L225 Difference]: With dead ends: 1170 [2023-12-02 08:23:00,325 INFO L226 Difference]: Without dead ends: 1169 [2023-12-02 08:23:00,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 08:23:00,330 INFO L413 NwaCegarLoop]: 2212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:00,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2212 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 08:23:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2023-12-02 08:23:00,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1169. [2023-12-02 08:23:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 660 states have (on average 1.8287878787878789) internal successors, (1207), 1162 states have internal predecessors, (1207), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-12-02 08:23:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 2215 transitions. [2023-12-02 08:23:00,737 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 2215 transitions. Word has length 6 [2023-12-02 08:23:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:00,737 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 2215 transitions. [2023-12-02 08:23:00,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:23:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 2215 transitions. [2023-12-02 08:23:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 08:23:00,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:00,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:23:00,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 08:23:00,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:00,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:00,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash -111625012, now seen corresponding path program 1 times [2023-12-02 08:23:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:00,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738773666] [2023-12-02 08:23:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:00,943 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 [2023-12-02 08:23:00,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:00,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:00,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:01,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:23:01,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:01,155 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:23:01,155 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:23:01,156 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:23:01,165 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 [2023-12-02 08:23:01,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:01,255 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 [2023-12-02 08:23:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:23:01,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:01,274 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738773666] [2023-12-02 08:23:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738773666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:01,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:01,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 08:23:01,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775895901] [2023-12-02 08:23:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:01,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:23:01,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:01,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:23:01,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:23:01,279 INFO L87 Difference]: Start difference. First operand 1169 states and 2215 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:23:05,496 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 [] [2023-12-02 08:23:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:09,033 INFO L93 Difference]: Finished difference Result 2273 states and 4352 transitions. [2023-12-02 08:23:09,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:23:09,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 08:23:09,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:09,055 INFO L225 Difference]: With dead ends: 2273 [2023-12-02 08:23:09,056 INFO L226 Difference]: Without dead ends: 2273 [2023-12-02 08:23:09,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:23:09,057 INFO L413 NwaCegarLoop]: 2222 mSDtfsCounter, 1132 mSDsluCounter, 3866 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 6088 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:09,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 6088 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 650 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 08:23:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2023-12-02 08:23:09,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1171. [2023-12-02 08:23:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 662 states have (on average 1.8262839879154078) internal successors, (1209), 1164 states have internal predecessors, (1209), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-12-02 08:23:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2217 transitions. [2023-12-02 08:23:09,438 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2217 transitions. Word has length 8 [2023-12-02 08:23:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:09,439 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 2217 transitions. [2023-12-02 08:23:09,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 08:23:09,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2217 transitions. [2023-12-02 08:23:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 08:23:09,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:09,442 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 08:23:09,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Forceful destruction successful, exit code 0 [2023-12-02 08:23:09,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:09,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:09,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -208302082, now seen corresponding path program 1 times [2023-12-02 08:23:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:09,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113163088] [2023-12-02 08:23:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:09,645 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 [2023-12-02 08:23:09,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:09,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:09,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:10,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:23:10,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:23:10,052 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:10,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113163088] [2023-12-02 08:23:10,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113163088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:10,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:10,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:23:10,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034594274] [2023-12-02 08:23:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:10,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:23:10,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:23:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:23:10,055 INFO L87 Difference]: Start difference. First operand 1171 states and 2217 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-12-02 08:23:10,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:10,239 INFO L93 Difference]: Finished difference Result 1175 states and 2213 transitions. [2023-12-02 08:23:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:23:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2023-12-02 08:23:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:10,249 INFO L225 Difference]: With dead ends: 1175 [2023-12-02 08:23:10,250 INFO L226 Difference]: Without dead ends: 1175 [2023-12-02 08:23:10,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:23:10,251 INFO L413 NwaCegarLoop]: 2183 mSDtfsCounter, 36 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 6525 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:10,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 6525 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:23:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-12-02 08:23:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1174. [2023-12-02 08:23:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 665 states have (on average 1.8105263157894738) internal successors, (1204), 1167 states have internal predecessors, (1204), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2023-12-02 08:23:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 2212 transitions. [2023-12-02 08:23:10,418 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 2212 transitions. Word has length 64 [2023-12-02 08:23:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:10,418 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 2212 transitions. [2023-12-02 08:23:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-12-02 08:23:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 2212 transitions. [2023-12-02 08:23:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 08:23:10,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:10,421 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 08:23:10,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:10,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:10,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1545590642, now seen corresponding path program 1 times [2023-12-02 08:23:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258972061] [2023-12-02 08:23:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:10,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:10,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:10,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:10,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:11,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:23:11,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:23:11,376 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:11,376 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:11,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258972061] [2023-12-02 08:23:11,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258972061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:11,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:11,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 08:23:11,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497853119] [2023-12-02 08:23:11,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:11,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:11,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:11,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:11,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:11,379 INFO L87 Difference]: Start difference. First operand 1174 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2023-12-02 08:23:12,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:12,270 INFO L93 Difference]: Finished difference Result 2265 states and 4320 transitions. [2023-12-02 08:23:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:23:12,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2023-12-02 08:23:12,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:12,291 INFO L225 Difference]: With dead ends: 2265 [2023-12-02 08:23:12,291 INFO L226 Difference]: Without dead ends: 2265 [2023-12-02 08:23:12,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 08:23:12,292 INFO L413 NwaCegarLoop]: 2261 mSDtfsCounter, 1071 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:12,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 4441 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 08:23:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2023-12-02 08:23:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2261. [2023-12-02 08:23:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1252 states have (on average 1.8442492012779552) internal successors, (2309), 2254 states have internal predecessors, (2309), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2023-12-02 08:23:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 4317 transitions. [2023-12-02 08:23:12,543 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 4317 transitions. Word has length 64 [2023-12-02 08:23:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:12,544 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 4317 transitions. [2023-12-02 08:23:12,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 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) [2023-12-02 08:23:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 4317 transitions. [2023-12-02 08:23:12,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 08:23:12,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:12,547 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] [2023-12-02 08:23:12,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 08:23:12,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:12,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:12,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:12,753 INFO L85 PathProgramCache]: Analyzing trace with hash 881030379, now seen corresponding path program 1 times [2023-12-02 08:23:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:12,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251431929] [2023-12-02 08:23:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:12,754 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 [2023-12-02 08:23:12,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:12,755 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:13,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:23:13,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 08:23:13,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:13,326 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251431929] [2023-12-02 08:23:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251431929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:13,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:13,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:23:13,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322774935] [2023-12-02 08:23:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:23:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:23:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:23:13,330 INFO L87 Difference]: Start difference. First operand 2261 states and 4317 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 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) [2023-12-02 08:23:13,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:13,467 INFO L93 Difference]: Finished difference Result 2263 states and 4320 transitions. [2023-12-02 08:23:13,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:23:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 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 77 [2023-12-02 08:23:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:13,488 INFO L225 Difference]: With dead ends: 2263 [2023-12-02 08:23:13,488 INFO L226 Difference]: Without dead ends: 2263 [2023-12-02 08:23:13,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:23:13,501 INFO L413 NwaCegarLoop]: 2199 mSDtfsCounter, 1 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6593 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:13,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6593 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:23:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2023-12-02 08:23:13,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2023-12-02 08:23:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 1253 states have (on average 1.8443735035913806) internal successors, (2311), 2256 states have internal predecessors, (2311), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 3 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-12-02 08:23:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 4320 transitions. [2023-12-02 08:23:13,848 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 4320 transitions. Word has length 77 [2023-12-02 08:23:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:13,849 INFO L495 AbstractCegarLoop]: Abstraction has 2263 states and 4320 transitions. [2023-12-02 08:23:13,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 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) [2023-12-02 08:23:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 4320 transitions. [2023-12-02 08:23:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 08:23:13,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:13,851 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] [2023-12-02 08:23:13,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:14,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:14,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -947572531, now seen corresponding path program 1 times [2023-12-02 08:23:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:14,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659501250] [2023-12-02 08:23:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:14,063 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 [2023-12-02 08:23:14,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:14,064 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:14,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 08:23:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:14,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:23:14,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 08:23:14,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:23:14,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659501250] [2023-12-02 08:23:14,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659501250] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1142672721] [2023-12-02 08:23:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:14,752 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:14,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 08:23:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:15,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:23:15,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 08:23:15,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:23:15,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1142672721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:15,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764742273] [2023-12-02 08:23:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:15,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:23:15,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:23:15,611 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:23:15,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 08:23:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:16,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:23:16,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:23:16,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 08:23:16,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764742273] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:16,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:23:16,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 08:23:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822016551] [2023-12-02 08:23:16,161 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:23:16,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 08:23:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 08:23:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 08:23:16,164 INFO L87 Difference]: Start difference. First operand 2263 states and 4320 transitions. Second operand has 11 states, 8 states have (on average 10.75) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:23:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:16,706 INFO L93 Difference]: Finished difference Result 2275 states and 4339 transitions. [2023-12-02 08:23:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 08:23:16,707 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 10.75) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2023-12-02 08:23:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:16,727 INFO L225 Difference]: With dead ends: 2275 [2023-12-02 08:23:16,727 INFO L226 Difference]: Without dead ends: 2275 [2023-12-02 08:23:16,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 08:23:16,729 INFO L413 NwaCegarLoop]: 2198 mSDtfsCounter, 17 mSDsluCounter, 8775 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 10973 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:16,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 10973 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 08:23:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2023-12-02 08:23:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2273. [2023-12-02 08:23:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2273 states, 1262 states have (on average 1.8446909667194928) internal successors, (2328), 2265 states have internal predecessors, (2328), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-12-02 08:23:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4337 transitions. [2023-12-02 08:23:17,302 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4337 transitions. Word has length 79 [2023-12-02 08:23:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:17,302 INFO L495 AbstractCegarLoop]: Abstraction has 2273 states and 4337 transitions. [2023-12-02 08:23:17,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 10.75) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:23:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4337 transitions. [2023-12-02 08:23:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 08:23:17,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:17,304 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-02 08:23:17,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 08:23:17,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-02 08:23:17,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 08:23:17,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:23:17,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:17,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1279830037, now seen corresponding path program 2 times [2023-12-02 08:23:17,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:17,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941883163] [2023-12-02 08:23:17,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 08:23:17,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:17,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:17,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:17,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 08:23:18,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 08:23:18,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 08:23:18,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:23:18,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:18,243 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:23:18,243 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:23:18,244 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 08:23:18,246 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 [2023-12-02 08:23:18,295 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 08:23:18,296 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 [2023-12-02 08:23:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 08:23:18,310 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:18,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:18,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941883163] [2023-12-02 08:23:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941883163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:18,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 08:23:18,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 08:23:18,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584476798] [2023-12-02 08:23:18,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:18,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:23:18,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:18,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:23:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 08:23:18,313 INFO L87 Difference]: Start difference. First operand 2273 states and 4337 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-02 08:23:21,637 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 [] [2023-12-02 08:23:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:26,442 INFO L93 Difference]: Finished difference Result 4342 states and 8427 transitions. [2023-12-02 08:23:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:23:26,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 85 [2023-12-02 08:23:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:26,479 INFO L225 Difference]: With dead ends: 4342 [2023-12-02 08:23:26,479 INFO L226 Difference]: Without dead ends: 4342 [2023-12-02 08:23:26,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 08:23:26,480 INFO L413 NwaCegarLoop]: 2630 mSDtfsCounter, 1120 mSDsluCounter, 4271 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 6901 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:26,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 6901 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 624 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2023-12-02 08:23:26,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4342 states. [2023-12-02 08:23:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4342 to 2275. [2023-12-02 08:23:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1264 states have (on average 1.8433544303797469) internal successors, (2330), 2267 states have internal predecessors, (2330), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-12-02 08:23:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 4339 transitions. [2023-12-02 08:23:27,199 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 4339 transitions. Word has length 85 [2023-12-02 08:23:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:27,200 INFO L495 AbstractCegarLoop]: Abstraction has 2275 states and 4339 transitions. [2023-12-02 08:23:27,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2023-12-02 08:23:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 4339 transitions. [2023-12-02 08:23:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 08:23:27,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:27,202 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:23:27,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-02 08:23:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:27,403 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:27,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash 198401123, now seen corresponding path program 1 times [2023-12-02 08:23:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:27,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221665112] [2023-12-02 08:23:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:27,405 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 [2023-12-02 08:23:27,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:27,405 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:27,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 08:23:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:27,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:23:27,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 08:23:27,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:28,186 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:23:28,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:28,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221665112] [2023-12-02 08:23:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221665112] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:28,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [14094512] [2023-12-02 08:23:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:28,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:28,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:28,187 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:28,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 08:23:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:28,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 08:23:28,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 08:23:28,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [14094512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:23:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 15 [2023-12-02 08:23:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237800509] [2023-12-02 08:23:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:28,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 08:23:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 08:23:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-02 08:23:28,865 INFO L87 Difference]: Start difference. First operand 2275 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 08:23:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:28,992 INFO L93 Difference]: Finished difference Result 2317 states and 4381 transitions. [2023-12-02 08:23:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 08:23:28,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 124 [2023-12-02 08:23:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:29,009 INFO L225 Difference]: With dead ends: 2317 [2023-12-02 08:23:29,009 INFO L226 Difference]: Without dead ends: 2317 [2023-12-02 08:23:29,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-02 08:23:29,010 INFO L413 NwaCegarLoop]: 2181 mSDtfsCounter, 8 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:29,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4348 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:23:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2023-12-02 08:23:29,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2315. [2023-12-02 08:23:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 1304 states have (on average 1.8174846625766872) internal successors, (2370), 2307 states have internal predecessors, (2370), 1005 states have call successors, (1005), 4 states have call predecessors, (1005), 4 states have return successors, (1004), 5 states have call predecessors, (1004), 1003 states have call successors, (1004) [2023-12-02 08:23:29,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 4379 transitions. [2023-12-02 08:23:29,387 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 4379 transitions. Word has length 124 [2023-12-02 08:23:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:29,387 INFO L495 AbstractCegarLoop]: Abstraction has 2315 states and 4379 transitions. [2023-12-02 08:23:29,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 08:23:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 4379 transitions. [2023-12-02 08:23:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 08:23:29,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:29,389 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:23:29,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-02 08:23:29,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-02 08:23:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:29,790 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:29,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1196837223, now seen corresponding path program 1 times [2023-12-02 08:23:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738410056] [2023-12-02 08:23:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:29,791 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 [2023-12-02 08:23:29,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:29,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:29,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 08:23:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:30,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:23:30,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 08:23:30,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:23:30,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:30,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738410056] [2023-12-02 08:23:30,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738410056] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:30,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [958768779] [2023-12-02 08:23:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:30,578 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:30,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:30,579 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:30,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 08:23:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:31,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 08:23:31,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 08:23:31,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [958768779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:31,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:23:31,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-12-02 08:23:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741280267] [2023-12-02 08:23:31,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:31,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:23:31,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:23:31,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-02 08:23:31,493 INFO L87 Difference]: Start difference. First operand 2315 states and 4379 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 08:23:33,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:23:35,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 08:23:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:39,028 INFO L93 Difference]: Finished difference Result 1250 states and 2298 transitions. [2023-12-02 08:23:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:23:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 124 [2023-12-02 08:23:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:39,038 INFO L225 Difference]: With dead ends: 1250 [2023-12-02 08:23:39,038 INFO L226 Difference]: Without dead ends: 1250 [2023-12-02 08:23:39,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-02 08:23:39,039 INFO L413 NwaCegarLoop]: 2202 mSDtfsCounter, 2265 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1003 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:39,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 3270 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 53 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2023-12-02 08:23:39,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-12-02 08:23:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1250. [2023-12-02 08:23:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 739 states have (on average 1.7442489851150202) internal successors, (1289), 1242 states have internal predecessors, (1289), 505 states have call successors, (505), 4 states have call predecessors, (505), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 08:23:39,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 2298 transitions. [2023-12-02 08:23:39,280 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 2298 transitions. Word has length 124 [2023-12-02 08:23:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:39,280 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 2298 transitions. [2023-12-02 08:23:39,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 08:23:39,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 2298 transitions. [2023-12-02 08:23:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 08:23:39,282 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:39,282 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:23:39,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 08:23:39,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 08:23:39,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:39,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:39,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash -817739471, now seen corresponding path program 1 times [2023-12-02 08:23:39,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:39,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774373012] [2023-12-02 08:23:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:39,685 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 [2023-12-02 08:23:39,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:39,685 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:39,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 08:23:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:40,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:23:40,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 08:23:40,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:23:40,512 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:40,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774373012] [2023-12-02 08:23:40,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774373012] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:40,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [310985235] [2023-12-02 08:23:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:40,512 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:40,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:40,513 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:40,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-02 08:23:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:41,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 08:23:41,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-02 08:23:41,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 08:23:41,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [310985235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 08:23:41,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 08:23:41,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-12-02 08:23:41,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924408312] [2023-12-02 08:23:41,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 08:23:41,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 08:23:41,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:41,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 08:23:41,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-02 08:23:41,244 INFO L87 Difference]: Start difference. First operand 1250 states and 2298 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 08:23:41,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:41,387 INFO L93 Difference]: Finished difference Result 1234 states and 2271 transitions. [2023-12-02 08:23:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 08:23:41,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 132 [2023-12-02 08:23:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:41,395 INFO L225 Difference]: With dead ends: 1234 [2023-12-02 08:23:41,395 INFO L226 Difference]: Without dead ends: 1234 [2023-12-02 08:23:41,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-02 08:23:41,396 INFO L413 NwaCegarLoop]: 2168 mSDtfsCounter, 39 mSDsluCounter, 4318 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 6486 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:41,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 6486 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 08:23:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2023-12-02 08:23:41,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1233. [2023-12-02 08:23:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 722 states have (on average 1.7465373961218837) internal successors, (1261), 1225 states have internal predecessors, (1261), 505 states have call successors, (505), 4 states have call predecessors, (505), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 08:23:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 2270 transitions. [2023-12-02 08:23:41,578 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 2270 transitions. Word has length 132 [2023-12-02 08:23:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:41,578 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 2270 transitions. [2023-12-02 08:23:41,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 08:23:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 2270 transitions. [2023-12-02 08:23:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 08:23:41,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:41,580 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:23:41,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2023-12-02 08:23:41,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 08:23:41,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:41,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:41,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1206196707, now seen corresponding path program 1 times [2023-12-02 08:23:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:41,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860612408] [2023-12-02 08:23:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:41,982 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 [2023-12-02 08:23:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:41,983 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:41,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 08:23:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:42,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:23:42,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 08:23:42,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:23:42,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:42,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860612408] [2023-12-02 08:23:42,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860612408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:42,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1831976263] [2023-12-02 08:23:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:42,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:42,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:42,793 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:42,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 08:23:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:43,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 08:23:43,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 08:23:43,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:23:43,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1831976263] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:43,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103696362] [2023-12-02 08:23:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 08:23:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:23:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:23:43,822 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:23:43,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 08:23:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 08:23:44,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 08:23:44,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:23:44,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 08:23:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103696362] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:44,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:23:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 22 [2023-12-02 08:23:44,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283541580] [2023-12-02 08:23:44,762 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:23:44,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 08:23:44,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:44,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 08:23:44,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-12-02 08:23:44,764 INFO L87 Difference]: Start difference. First operand 1233 states and 2270 transitions. Second operand has 22 states, 18 states have (on average 7.944444444444445) internal successors, (143), 22 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:23:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:46,004 INFO L93 Difference]: Finished difference Result 1252 states and 2298 transitions. [2023-12-02 08:23:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 08:23:46,004 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.944444444444445) internal successors, (143), 22 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 132 [2023-12-02 08:23:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:46,010 INFO L225 Difference]: With dead ends: 1252 [2023-12-02 08:23:46,010 INFO L226 Difference]: Without dead ends: 1249 [2023-12-02 08:23:46,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=678, Invalid=1674, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 08:23:46,012 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 37 mSDsluCounter, 23998 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 26184 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:46,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 26184 Invalid, 304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 08:23:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2023-12-02 08:23:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1245. [2023-12-02 08:23:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 734 states have (on average 1.7411444141689374) internal successors, (1278), 1237 states have internal predecessors, (1278), 505 states have call successors, (505), 4 states have call predecessors, (505), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 08:23:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 2287 transitions. [2023-12-02 08:23:46,173 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 2287 transitions. Word has length 132 [2023-12-02 08:23:46,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:46,173 INFO L495 AbstractCegarLoop]: Abstraction has 1245 states and 2287 transitions. [2023-12-02 08:23:46,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.944444444444445) internal successors, (143), 22 states have internal predecessors, (143), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:23:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 2287 transitions. [2023-12-02 08:23:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 08:23:46,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:46,175 INFO L195 NwaCegarLoop]: trace histogram [20, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:23:46,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 08:23:46,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-12-02 08:23:46,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 08:23:46,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:23:46,776 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:46,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:46,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1365615261, now seen corresponding path program 2 times [2023-12-02 08:23:46,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:46,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907335803] [2023-12-02 08:23:46,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 08:23:46,777 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 [2023-12-02 08:23:46,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:46,778 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:46,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 08:23:47,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 08:23:47,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 08:23:47,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 08:23:47,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 125 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 08:23:47,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 2 proven. 177 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 08:23:48,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:23:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907335803] [2023-12-02 08:23:48,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907335803] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:48,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [812165132] [2023-12-02 08:23:48,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 08:23:48,259 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:23:48,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:23:48,260 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:23:48,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 08:23:49,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 08:23:49,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 08:23:49,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 08:23:49,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:49,887 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 125 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-02 08:23:49,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 2 proven. 177 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 08:23:50,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [812165132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:50,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43348668] [2023-12-02 08:23:50,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 08:23:50,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 08:23:50,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 08:23:50,025 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 08:23:50,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 08:23:50,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 08:23:50,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 08:23:50,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 08:23:50,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:23:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 124 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 08:23:50,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:23:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 124 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 08:23:51,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43348668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:23:51,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 08:23:51,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 40 [2023-12-02 08:23:51,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219460228] [2023-12-02 08:23:51,860 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 08:23:51,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-02 08:23:51,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 08:23:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-02 08:23:51,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 08:23:51,863 INFO L87 Difference]: Start difference. First operand 1245 states and 2287 transitions. Second operand has 40 states, 36 states have (on average 4.472222222222222) internal successors, (161), 40 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:23:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 08:23:56,446 INFO L93 Difference]: Finished difference Result 1281 states and 2344 transitions. [2023-12-02 08:23:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-02 08:23:56,447 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.472222222222222) internal successors, (161), 40 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2023-12-02 08:23:56,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 08:23:56,453 INFO L225 Difference]: With dead ends: 1281 [2023-12-02 08:23:56,453 INFO L226 Difference]: Without dead ends: 1278 [2023-12-02 08:23:56,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2454, Invalid=6666, Unknown=0, NotChecked=0, Total=9120 [2023-12-02 08:23:56,456 INFO L413 NwaCegarLoop]: 2186 mSDtfsCounter, 66 mSDsluCounter, 52350 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 54536 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 08:23:56,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 54536 Invalid, 917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 08:23:56,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2023-12-02 08:23:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1269. [2023-12-02 08:23:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 758 states have (on average 1.7321899736147757) internal successors, (1313), 1261 states have internal predecessors, (1313), 505 states have call successors, (505), 4 states have call predecessors, (505), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2023-12-02 08:23:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2322 transitions. [2023-12-02 08:23:56,623 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2322 transitions. Word has length 144 [2023-12-02 08:23:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 08:23:56,624 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 2322 transitions. [2023-12-02 08:23:56,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.472222222222222) internal successors, (161), 40 states have internal predecessors, (161), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 08:23:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2322 transitions. [2023-12-02 08:23:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 08:23:56,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 08:23:56,626 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 08:23:56,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 08:23:56,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-02 08:23:57,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 08:23:57,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 08:23:57,227 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 08:23:57,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 08:23:57,228 INFO L85 PathProgramCache]: Analyzing trace with hash 661025891, now seen corresponding path program 3 times [2023-12-02 08:23:57,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 08:23:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197868345] [2023-12-02 08:23:57,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 08:23:57,229 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 [2023-12-02 08:23:57,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 08:23:57,230 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -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) [2023-12-02 08:23:57,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 08:24:05,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-02 08:24:05,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 08:24:05,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 08:24:05,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 08:24:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 532 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 08:24:05,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 08:24:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 532 proven. 253 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 08:24:08,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 08:24:08,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197868345] [2023-12-02 08:24:08,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197868345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 08:24:08,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1768586499] [2023-12-02 08:24:08,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 08:24:08,136 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 08:24:08,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 08:24:08,137 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 08:24:08,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe951261-af32-4544-94e4-42181f5dcb08/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process