./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 30e01a73 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_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:11:25,002 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:11:25,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-23 21:11:25,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:11:25,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:11:25,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:11:25,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:11:25,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:11:25,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:11:25,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:11:25,118 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:11:25,119 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:11:25,119 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:11:25,120 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:11:25,121 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:11:25,121 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:11:25,122 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:11:25,122 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:11:25,123 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:11:25,124 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:11:25,124 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:11:25,125 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:11:25,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:11:25,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:11:25,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:11:25,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:11:25,129 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:11:25,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:11:25,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:11:25,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:11:25,131 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:11:25,131 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:11:25,132 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:11:25,132 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:11:25,133 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:11:25,133 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:11:25,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:11:25,134 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:11:25,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:11:25,135 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:11:25,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:11:25,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:11:25,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:11:25,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:25,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:11:25,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:11:25,137 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:11:25,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:11:25,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:11:25,138 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:11:25,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:11:25,138 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_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-11-23 21:11:25,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:11:25,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:11:25,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:11:25,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:11:25,444 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:11:25,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-23 21:11:28,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:11:29,276 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:11:29,277 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-23 21:11:29,297 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data/00b2e5b8a/610792cb979f48d2a26816730adc7e04/FLAG2a2265a7a [2023-11-23 21:11:29,322 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data/00b2e5b8a/610792cb979f48d2a26816730adc7e04 [2023-11-23 21:11:29,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:11:29,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:11:29,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:29,340 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:11:29,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:11:29,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:29" (1/1) ... [2023-11-23 21:11:29,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12ef3737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:29, skipping insertion in model container [2023-11-23 21:11:29,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:29" (1/1) ... [2023-11-23 21:11:29,427 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:11:30,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:30,135 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 21:11:30,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25c28629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:30, skipping insertion in model container [2023-11-23 21:11:30,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:30,137 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:11:30,139 INFO L158 Benchmark]: Toolchain (without parser) took 803.14ms. Allocated memory is still 163.6MB. Free memory was 115.4MB in the beginning and 92.8MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:11:30,140 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 72.5MB in the beginning and 72.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:11:30,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 797.74ms. Allocated memory is still 163.6MB. Free memory was 115.2MB in the beginning and 92.8MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:11:30,142 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 104.9MB. Free memory was 72.5MB in the beginning and 72.5MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 797.74ms. Allocated memory is still 163.6MB. Free memory was 115.2MB in the beginning and 92.8MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:11:32,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:11:32,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-23 21:11:32,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:11:32,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:11:33,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:11:33,038 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:11:33,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:11:33,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:11:33,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:11:33,048 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:11:33,048 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:11:33,049 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:11:33,051 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:11:33,051 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:11:33,052 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:11:33,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:11:33,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:11:33,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:11:33,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:11:33,056 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:11:33,056 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:11:33,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:11:33,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:11:33,058 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:11:33,058 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:11:33,058 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:11:33,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:11:33,059 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:11:33,060 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:11:33,060 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:11:33,061 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:11:33,061 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:11:33,061 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:11:33,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:11:33,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:11:33,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:11:33,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:11:33,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:11:33,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:11:33,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:33,064 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:11:33,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:11:33,064 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:11:33,065 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:11:33,065 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:11:33,065 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:11:33,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:11:33,065 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_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-11-23 21:11:33,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:11:33,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:11:33,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:11:33,525 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:11:33,526 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:11:33,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-23 21:11:37,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:11:37,487 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:11:37,487 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-23 21:11:37,535 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data/cb312890d/788801b499234841805acaf692bcce96/FLAG73c88095b [2023-11-23 21:11:37,548 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/data/cb312890d/788801b499234841805acaf692bcce96 [2023-11-23 21:11:37,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:11:37,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:11:37,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:37,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:11:37,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:11:37,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:37" (1/1) ... [2023-11-23 21:11:37,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea29196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:37, skipping insertion in model container [2023-11-23 21:11:37,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:11:37" (1/1) ... [2023-11-23 21:11:37,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:11:38,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:38,372 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:11:38,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:11:38,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:38,516 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:11:38,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:11:38,706 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:11:38,714 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:11:38,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38 WrapperNode [2023-11-23 21:11:38,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:11:38,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:38,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:11:38,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:11:38,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,845 INFO L138 Inliner]: procedures = 180, calls = 390, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1406 [2023-11-23 21:11:38,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:11:38,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:11:38,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:11:38,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:11:38,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:38,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:39,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:39,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:11:39,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:11:39,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:11:39,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:11:39,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (1/1) ... [2023-11-23 21:11:39,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:11:39,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:11:39,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:11:39,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:11:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:11:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:11:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:11:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:11:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:11:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:11:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:11:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:11:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:11:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:11:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:11:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:11:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:11:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:11:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:11:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:11:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:11:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:11:39,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:11:39,411 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:11:39,414 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:11:56,012 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:11:56,097 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:11:56,098 INFO L309 CfgBuilder]: Removed 83 assume(true) statements. [2023-11-23 21:11:56,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:56 BoogieIcfgContainer [2023-11-23 21:11:56,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:11:56,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:11:56,105 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:11:56,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:11:56,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:11:37" (1/3) ... [2023-11-23 21:11:56,110 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3385d7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:56, skipping insertion in model container [2023-11-23 21:11:56,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:11:38" (2/3) ... [2023-11-23 21:11:56,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3385d7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:11:56, skipping insertion in model container [2023-11-23 21:11:56,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:11:56" (3/3) ... [2023-11-23 21:11:56,115 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2023-11-23 21:11:56,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:11:56,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:11:56,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:11:56,211 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;@ddc640c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:11:56,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:11:56,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 246 states have (on average 1.6829268292682926) internal successors, (414), 255 states have internal predecessors, (414), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:11:56,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:11:56,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:56,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:11:56,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:11:56,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1302534622, now seen corresponding path program 1 times [2023-11-23 21:11:56,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:56,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408726433] [2023-11-23 21:11:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:56,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:11:56,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:56,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:11:56,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:11:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:56,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:11:56,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:11:56,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:56,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:56,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408726433] [2023-11-23 21:11:56,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408726433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:56,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:56,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:11:56,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746537713] [2023-11-23 21:11:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:56,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:11:56,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:56,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:11:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:11:56,575 INFO L87 Difference]: Start difference. First operand has 265 states, 246 states have (on average 1.6829268292682926) internal successors, (414), 255 states have internal predecessors, (414), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:56,662 INFO L93 Difference]: Finished difference Result 263 states and 345 transitions. [2023-11-23 21:11:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:11:56,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:11:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:56,679 INFO L225 Difference]: With dead ends: 263 [2023-11-23 21:11:56,680 INFO L226 Difference]: Without dead ends: 262 [2023-11-23 21:11:56,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:11:56,686 INFO L413 NwaCegarLoop]: 341 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, 341 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 [2023-11-23 21:11:56,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 341 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:11:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-23 21:11:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-11-23 21:11:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 245 states have (on average 1.3061224489795917) internal successors, (320), 252 states have internal predecessors, (320), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:11:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 344 transitions. [2023-11-23 21:11:56,762 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 344 transitions. Word has length 6 [2023-11-23 21:11:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:56,762 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 344 transitions. [2023-11-23 21:11:56,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 344 transitions. [2023-11-23 21:11:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:11:56,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:56,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:11:56,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 21:11:56,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:11:56,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:11:56,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1962852137, now seen corresponding path program 1 times [2023-11-23 21:11:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:56,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870631517] [2023-11-23 21:11:56,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:56,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:11:56,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:56,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:11:57,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:11:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:57,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:11:57,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:11:57,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:57,218 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870631517] [2023-11-23 21:11:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870631517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:57,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:57,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:11:57,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571879780] [2023-11-23 21:11:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:57,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:11:57,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:11:57,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:11:57,223 INFO L87 Difference]: Start difference. First operand 262 states and 344 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:57,625 INFO L93 Difference]: Finished difference Result 508 states and 672 transitions. [2023-11-23 21:11:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:11:57,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 21:11:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:57,632 INFO L225 Difference]: With dead ends: 508 [2023-11-23 21:11:57,632 INFO L226 Difference]: Without dead ends: 508 [2023-11-23 21:11:57,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:11:57,634 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 303 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:57,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 707 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:11:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-23 21:11:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 264. [2023-11-23 21:11:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 247 states have (on average 1.3036437246963564) internal successors, (322), 254 states have internal predecessors, (322), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:11:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 346 transitions. [2023-11-23 21:11:57,689 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 346 transitions. Word has length 6 [2023-11-23 21:11:57,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:57,689 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 346 transitions. [2023-11-23 21:11:57,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:57,690 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 346 transitions. [2023-11-23 21:11:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 21:11:57,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:57,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:57,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:57,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:11:57,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:11:57,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -523041530, now seen corresponding path program 1 times [2023-11-23 21:11:57,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:57,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927708690] [2023-11-23 21:11:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:57,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:11:57,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:57,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:11:57,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:11:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:11:58,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:11:58,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:11:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:11:58,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:11:58,933 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:11:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927708690] [2023-11-23 21:11:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927708690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:11:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:11:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:11:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770323989] [2023-11-23 21:11:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:11:58,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:11:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:11:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:11:58,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:11:58,938 INFO L87 Difference]: Start difference. First operand 264 states and 346 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:59,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:11:59,170 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2023-11-23 21:11:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:11:59,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-23 21:11:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:11:59,174 INFO L225 Difference]: With dead ends: 268 [2023-11-23 21:11:59,174 INFO L226 Difference]: Without dead ends: 268 [2023-11-23 21:11:59,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:11:59,179 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 36 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:11:59,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 912 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:11:59,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-11-23 21:11:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2023-11-23 21:11:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 250 states have (on average 1.268) internal successors, (317), 257 states have internal predecessors, (317), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:11:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 341 transitions. [2023-11-23 21:11:59,213 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 341 transitions. Word has length 151 [2023-11-23 21:11:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:11:59,213 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 341 transitions. [2023-11-23 21:11:59,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:11:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 341 transitions. [2023-11-23 21:11:59,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 21:11:59,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:11:59,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:11:59,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:11:59,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:11:59,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:11:59,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:11:59,438 INFO L85 PathProgramCache]: Analyzing trace with hash 852762490, now seen corresponding path program 1 times [2023-11-23 21:11:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:11:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245081959] [2023-11-23 21:11:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:11:59,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:11:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:11:59,441 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:11:59,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:12:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:00,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:12:00,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:00,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:12:00,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:12:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245081959] [2023-11-23 21:12:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245081959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:00,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:00,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:12:00,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150065656] [2023-11-23 21:12:00,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:00,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:00,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:12:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:00,932 INFO L87 Difference]: Start difference. First operand 267 states and 341 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:12:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:01,479 INFO L93 Difference]: Finished difference Result 309 states and 387 transitions. [2023-11-23 21:12:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:01,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-23 21:12:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:01,483 INFO L225 Difference]: With dead ends: 309 [2023-11-23 21:12:01,483 INFO L226 Difference]: Without dead ends: 309 [2023-11-23 21:12:01,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:12:01,485 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 11 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:01,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 644 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:12:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-23 21:12:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2023-11-23 21:12:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 292 states have (on average 1.2431506849315068) internal successors, (363), 299 states have internal predecessors, (363), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 21:12:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 387 transitions. [2023-11-23 21:12:01,511 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 387 transitions. Word has length 151 [2023-11-23 21:12:01,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:01,514 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 387 transitions. [2023-11-23 21:12:01,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:12:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 387 transitions. [2023-11-23 21:12:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-23 21:12:01,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:01,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:01,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:01,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:01,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:12:01,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash -430394406, now seen corresponding path program 1 times [2023-11-23 21:12:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:01,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707358641] [2023-11-23 21:12:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:01,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:01,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:01,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:12:01,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:12:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:02,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:12:02,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:12:02,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:12:02,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:12:02,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707358641] [2023-11-23 21:12:02,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707358641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:02,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:12:02,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:12:02,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704687974] [2023-11-23 21:12:02,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:12:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:12:02,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:12:02,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:12:02,863 INFO L87 Difference]: Start difference. First operand 309 states and 387 transitions. Second operand has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:12:03,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:03,000 INFO L93 Difference]: Finished difference Result 311 states and 391 transitions. [2023-11-23 21:12:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:12:03,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 164 [2023-11-23 21:12:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:03,005 INFO L225 Difference]: With dead ends: 311 [2023-11-23 21:12:03,005 INFO L226 Difference]: Without dead ends: 311 [2023-11-23 21:12:03,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:12:03,007 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:03,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 974 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:12:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-23 21:12:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2023-11-23 21:12:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 293 states have (on average 1.2457337883959045) internal successors, (365), 301 states have internal predecessors, (365), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-23 21:12:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 391 transitions. [2023-11-23 21:12:03,022 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 391 transitions. Word has length 164 [2023-11-23 21:12:03,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:03,023 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 391 transitions. [2023-11-23 21:12:03,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:12:03,024 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 391 transitions. [2023-11-23 21:12:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 21:12:03,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:03,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:03,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:03,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:03,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:12:03,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash -506725582, now seen corresponding path program 1 times [2023-11-23 21:12:03,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137022501] [2023-11-23 21:12:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:03,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:03,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:03,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:12:03,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:12:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:04,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:12:04,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:12:04,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:12:04,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:12:04,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:12:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137022501] [2023-11-23 21:12:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137022501] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:12:04,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1157067862] [2023-11-23 21:12:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:04,656 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:04,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:12:04,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:12:04,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-23 21:12:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:05,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:12:05,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:12:06,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:12:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1157067862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:06,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:12:06,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-23 21:12:06,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774941320] [2023-11-23 21:12:06,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:06,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:12:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:12:06,026 INFO L87 Difference]: Start difference. First operand 311 states and 391 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:12:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:06,228 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2023-11-23 21:12:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2023-11-23 21:12:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:06,236 INFO L225 Difference]: With dead ends: 332 [2023-11-23 21:12:06,239 INFO L226 Difference]: Without dead ends: 332 [2023-11-23 21:12:06,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:12:06,242 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 8 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:06,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 606 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:12:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-11-23 21:12:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 331. [2023-11-23 21:12:06,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 313 states have (on average 1.2300319488817892) internal successors, (385), 321 states have internal predecessors, (385), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-23 21:12:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2023-11-23 21:12:06,265 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 166 [2023-11-23 21:12:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:06,267 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2023-11-23 21:12:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:12:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2023-11-23 21:12:06,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 21:12:06,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:06,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:06,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:06,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:06,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:12:06,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:06,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1415857746, now seen corresponding path program 1 times [2023-11-23 21:12:06,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:06,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406451714] [2023-11-23 21:12:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:06,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:06,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:06,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:12:06,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 21:12:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:07,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:12:07,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:12:07,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:12:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:12:08,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:12:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406451714] [2023-11-23 21:12:08,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406451714] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:12:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [981127979] [2023-11-23 21:12:08,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:08,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:08,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:12:08,117 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:12:08,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-23 21:12:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:09,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:12:09,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:12:10,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:12:10,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [981127979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:10,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:12:10,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-23 21:12:10,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998306702] [2023-11-23 21:12:10,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:10,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:10,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:12:10,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:10,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:12:10,125 INFO L87 Difference]: Start difference. First operand 331 states and 411 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:12:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:11,435 INFO L93 Difference]: Finished difference Result 577 states and 724 transitions. [2023-11-23 21:12:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:11,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 166 [2023-11-23 21:12:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:11,442 INFO L225 Difference]: With dead ends: 577 [2023-11-23 21:12:11,442 INFO L226 Difference]: Without dead ends: 577 [2023-11-23 21:12:11,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:12:11,443 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 235 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:11,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 769 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:12:11,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-23 21:12:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 573. [2023-11-23 21:12:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 546 states have (on average 1.2362637362637363) internal successors, (675), 559 states have internal predecessors, (675), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2023-11-23 21:12:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 721 transitions. [2023-11-23 21:12:11,473 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 721 transitions. Word has length 166 [2023-11-23 21:12:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:11,474 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 721 transitions. [2023-11-23 21:12:11,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:12:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 721 transitions. [2023-11-23 21:12:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-23 21:12:11,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:11,479 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:11,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:11,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-11-23 21:12:11,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:11,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:12:11,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1820625144, now seen corresponding path program 1 times [2023-11-23 21:12:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:11,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106231337] [2023-11-23 21:12:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:11,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:11,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:11,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:12:11,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 21:12:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:13,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:12:13,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:12:13,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:12:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:12:13,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:12:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106231337] [2023-11-23 21:12:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106231337] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:12:13,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [160691446] [2023-11-23 21:12:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:12:13,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:12:13,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-23 21:12:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:12:14,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:12:14,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:12:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 21:12:15,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:12:15,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [160691446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:12:15,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:12:15,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-23 21:12:15,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053412568] [2023-11-23 21:12:15,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:12:15,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:12:15,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:12:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:12:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:12:15,999 INFO L87 Difference]: Start difference. First operand 573 states and 721 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-23 21:12:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:12:17,341 INFO L93 Difference]: Finished difference Result 717 states and 902 transitions. [2023-11-23 21:12:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:12:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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 174 [2023-11-23 21:12:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:12:17,355 INFO L225 Difference]: With dead ends: 717 [2023-11-23 21:12:17,355 INFO L226 Difference]: Without dead ends: 717 [2023-11-23 21:12:17,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:12:17,357 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 92 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:12:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 690 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:12:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-23 21:12:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 713. [2023-11-23 21:12:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 683 states have (on average 1.2386530014641288) internal successors, (846), 696 states have internal predecessors, (846), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-11-23 21:12:17,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 899 transitions. [2023-11-23 21:12:17,407 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 899 transitions. Word has length 174 [2023-11-23 21:12:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:12:17,408 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 899 transitions. [2023-11-23 21:12:17,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 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) [2023-11-23 21:12:17,409 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 899 transitions. [2023-11-23 21:12:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:12:17,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:12:17,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:12:17,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:12:17,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-11-23 21:12:17,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:12:17,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:12:17,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:12:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1040811693, now seen corresponding path program 1 times [2023-11-23 21:12:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:12:17,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062820032] [2023-11-23 21:12:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:12:17,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:12:17,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:12:17,832 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:12:17,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beab04c6-b45b-40cd-8655-fac08958d933/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process