./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ --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 f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:30,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:30,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 04:51:30,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:30,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:30,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:30,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:30,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:30,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:30,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:30,544 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:30,544 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:30,545 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:30,545 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:51:30,546 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:30,547 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:30,547 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:51:30,548 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:51:30,548 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:30,549 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:51:30,550 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:51:30,550 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:51:30,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:30,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:30,552 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:30,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:51:30,553 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:30,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:30,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:30,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:30,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:51:30,556 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:30,556 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:30,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:30,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:51:30,558 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:30,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:30,558 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:30,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:51:30,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:30,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:30,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:30,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:30,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:30,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:30,561 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:51:30,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:51:30,561 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:30,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:30,562 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_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2023-11-19 04:51:30,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:30,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:30,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:30,916 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:30,916 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:30,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-19 04:51:34,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:34,389 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:34,399 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-19 04:51:34,422 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data/696218bed/e63f3cd4a68442699e23cc164704d2d5/FLAG3bc7253b3 [2023-11-19 04:51:34,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data/696218bed/e63f3cd4a68442699e23cc164704d2d5 [2023-11-19 04:51:34,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:34,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:34,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:34,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:34,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:34,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:34" (1/1) ... [2023-11-19 04:51:34,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1178a4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:34, skipping insertion in model container [2023-11-19 04:51:34,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:34" (1/1) ... [2023-11-19 04:51:34,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:35,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:35,222 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) [2023-11-19 04:51:35,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@15ed268b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:35, skipping insertion in model container [2023-11-19 04:51:35,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:35,223 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:51:35,225 INFO L158 Benchmark]: Toolchain (without parser) took 774.42ms. Allocated memory is still 161.5MB. Free memory was 110.3MB in the beginning and 88.4MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:51:35,225 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 161.5MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:51:35,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 771.62ms. Allocated memory is still 161.5MB. Free memory was 110.3MB in the beginning and 88.4MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:51:35,228 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 161.5MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 771.62ms. Allocated memory is still 161.5MB. Free memory was 110.3MB in the beginning and 88.4MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ --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 f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:51:37,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:51:37,932 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 04:51:37,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:51:37,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:51:37,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:51:37,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:51:37,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:51:37,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:51:38,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:51:38,002 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:51:38,003 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:51:38,003 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:51:38,005 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:51:38,006 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:51:38,006 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:51:38,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:51:38,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:51:38,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:51:38,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:51:38,010 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:51:38,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:51:38,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:51:38,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:51:38,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:51:38,013 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:51:38,013 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:51:38,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:51:38,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:51:38,015 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:51:38,016 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:51:38,016 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:51:38,017 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:51:38,017 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:51:38,017 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:51:38,018 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:51:38,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:51:38,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:51:38,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:51:38,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:38,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:51:38,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:51:38,021 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:51:38,021 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:51:38,022 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:51:38,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:51:38,022 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_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41a78d87834195eab5eb2e1b786d665ee0f261c86aa89f4e0ae15aff9e9d1ee [2023-11-19 04:51:38,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:51:38,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:51:38,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:51:38,488 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:51:38,489 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:51:38,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-19 04:51:41,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:51:42,284 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:51:42,285 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test4-3.i [2023-11-19 04:51:42,312 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data/166a96fab/007493acbd694bd3bad8cab6b8f5bbe2/FLAG0c19d1617 [2023-11-19 04:51:42,328 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/data/166a96fab/007493acbd694bd3bad8cab6b8f5bbe2 [2023-11-19 04:51:42,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:51:42,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:51:42,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:42,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:51:42,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:51:42,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:42" (1/1) ... [2023-11-19 04:51:42,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e36f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:42, skipping insertion in model container [2023-11-19 04:51:42,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:51:42" (1/1) ... [2023-11-19 04:51:42,428 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:43,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:43,037 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:51:43,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:51:43,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:43,204 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:51:43,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:51:43,383 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:51:43,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43 WrapperNode [2023-11-19 04:51:43,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:51:43,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:43,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:51:43,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:51:43,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,469 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,547 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1460 [2023-11-19 04:51:43,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:51:43,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:51:43,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:51:43,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:51:43,558 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,672 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,690 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:51:43,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:51:43,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:51:43,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:51:43,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (1/1) ... [2023-11-19 04:51:43,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:51:43,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:51:43,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:51:43,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:51:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:51:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:51:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:51:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:51:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:51:43,867 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:51:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:51:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:51:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:51:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:51:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:51:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:51:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:51:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:51:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:51:43,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:51:44,217 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:51:44,219 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:51:59,279 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:51:59,291 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:51:59,291 INFO L302 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-19 04:51:59,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:59 BoogieIcfgContainer [2023-11-19 04:51:59,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:51:59,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:51:59,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:51:59,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:51:59,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:51:42" (1/3) ... [2023-11-19 04:51:59,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121f5d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:59, skipping insertion in model container [2023-11-19 04:51:59,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:51:43" (2/3) ... [2023-11-19 04:51:59,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121f5d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:51:59, skipping insertion in model container [2023-11-19 04:51:59,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:51:59" (3/3) ... [2023-11-19 04:51:59,316 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test4-3.i [2023-11-19 04:51:59,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:51:59,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:51:59,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:51:59,412 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;@17f231a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:51:59,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:51:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 272 states, 251 states have (on average 1.6613545816733069) internal successors, (417), 263 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:51:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:51:59,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:51:59,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:51:59,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:51:59,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:51:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1051989858, now seen corresponding path program 1 times [2023-11-19 04:51:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:51:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404834124] [2023-11-19 04:51:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:51:59,450 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 [2023-11-19 04:51:59,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:51:59,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:51:59,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:51:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:51:59,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:51:59,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:51:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:51:59,703 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:51:59,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:51:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404834124] [2023-11-19 04:51:59,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404834124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:51:59,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:51:59,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:51:59,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276754602] [2023-11-19 04:51:59,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:51:59,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:51:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:51:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:51:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:51:59,746 INFO L87 Difference]: Start difference. First operand has 272 states, 251 states have (on average 1.6613545816733069) internal successors, (417), 263 states have internal predecessors, (417), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 04:52:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:00,148 INFO L93 Difference]: Finished difference Result 445 states and 588 transitions. [2023-11-19 04:52:00,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:00,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2023-11-19 04:52:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:00,189 INFO L225 Difference]: With dead ends: 445 [2023-11-19 04:52:00,191 INFO L226 Difference]: Without dead ends: 443 [2023-11-19 04:52:00,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:00,200 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 213 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 715 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:52:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-19 04:52:00,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 270. [2023-11-19 04:52:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 250 states have (on average 1.316) internal successors, (329), 261 states have internal predecessors, (329), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:52:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 361 transitions. [2023-11-19 04:52:00,281 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 361 transitions. Word has length 11 [2023-11-19 04:52:00,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:00,282 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 361 transitions. [2023-11-19 04:52:00,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-19 04:52:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 361 transitions. [2023-11-19 04:52:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-19 04:52:00,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:00,291 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] [2023-11-19 04:52:00,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:00,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:00,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:52:00,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1537094394, now seen corresponding path program 1 times [2023-11-19 04:52:00,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:00,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904658013] [2023-11-19 04:52:00,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:00,500 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 [2023-11-19 04:52:00,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:00,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:52:00,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:01,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:01,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:01,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:01,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:01,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904658013] [2023-11-19 04:52:01,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904658013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:01,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:01,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:52:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490175166] [2023-11-19 04:52:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:01,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:01,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:52:01,428 INFO L87 Difference]: Start difference. First operand 270 states and 361 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-19 04:52:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:01,679 INFO L93 Difference]: Finished difference Result 274 states and 357 transitions. [2023-11-19 04:52:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:52:01,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 117 [2023-11-19 04:52:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:01,684 INFO L225 Difference]: With dead ends: 274 [2023-11-19 04:52:01,684 INFO L226 Difference]: Without dead ends: 274 [2023-11-19 04:52:01,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:52:01,687 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 36 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:01,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 967 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:52:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-19 04:52:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2023-11-19 04:52:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 253 states have (on average 1.2806324110671936) internal successors, (324), 264 states have internal predecessors, (324), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:52:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 356 transitions. [2023-11-19 04:52:01,717 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 356 transitions. Word has length 117 [2023-11-19 04:52:01,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:01,717 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 356 transitions. [2023-11-19 04:52:01,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-19 04:52:01,718 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 356 transitions. [2023-11-19 04:52:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-19 04:52:01,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:01,725 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] [2023-11-19 04:52:01,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:01,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:01,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:52:01,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:01,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2104937082, now seen corresponding path program 1 times [2023-11-19 04:52:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370559025] [2023-11-19 04:52:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:01,955 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 [2023-11-19 04:52:01,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:01,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:52:02,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:02,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:02,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:03,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:03,378 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:03,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [370559025] [2023-11-19 04:52:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [370559025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:03,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:03,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:52:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336029756] [2023-11-19 04:52:03,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:03,389 INFO L87 Difference]: Start difference. First operand 273 states and 356 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-11-19 04:52:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:04,301 INFO L93 Difference]: Finished difference Result 369 states and 473 transitions. [2023-11-19 04:52:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 117 [2023-11-19 04:52:04,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:04,313 INFO L225 Difference]: With dead ends: 369 [2023-11-19 04:52:04,313 INFO L226 Difference]: Without dead ends: 369 [2023-11-19 04:52:04,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:52:04,315 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 80 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:04,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 659 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 04:52:04,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-11-19 04:52:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 315. [2023-11-19 04:52:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 295 states have (on average 1.2542372881355932) internal successors, (370), 306 states have internal predecessors, (370), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:52:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 402 transitions. [2023-11-19 04:52:04,361 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 402 transitions. Word has length 117 [2023-11-19 04:52:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:04,366 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 402 transitions. [2023-11-19 04:52:04,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2023-11-19 04:52:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 402 transitions. [2023-11-19 04:52:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 04:52:04,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:04,376 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] [2023-11-19 04:52:04,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:04,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:04,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:52:04,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:04,596 INFO L85 PathProgramCache]: Analyzing trace with hash -153142071, now seen corresponding path program 1 times [2023-11-19 04:52:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111034998] [2023-11-19 04:52:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:04,599 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 [2023-11-19 04:52:04,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:04,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:52:04,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:05,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:05,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:52:05,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:05,678 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:05,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111034998] [2023-11-19 04:52:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111034998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:52:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:52:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926601357] [2023-11-19 04:52:05,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:05,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:05,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:05,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:52:05,683 INFO L87 Difference]: Start difference. First operand 315 states and 402 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-19 04:52:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:05,802 INFO L93 Difference]: Finished difference Result 318 states and 407 transitions. [2023-11-19 04:52:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:52:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 132 [2023-11-19 04:52:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:05,807 INFO L225 Difference]: With dead ends: 318 [2023-11-19 04:52:05,807 INFO L226 Difference]: Without dead ends: 318 [2023-11-19 04:52:05,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:52:05,809 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 2 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:05,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1028 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:52:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-19 04:52:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-19 04:52:05,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 297 states have (on average 1.2558922558922558) internal successors, (373), 309 states have internal predecessors, (373), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-19 04:52:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 407 transitions. [2023-11-19 04:52:05,828 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 407 transitions. Word has length 132 [2023-11-19 04:52:05,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:05,829 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 407 transitions. [2023-11-19 04:52:05,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2023-11-19 04:52:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 407 transitions. [2023-11-19 04:52:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 04:52:05,834 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:05,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:05,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:06,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:06,048 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:52:06,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:06,048 INFO L85 PathProgramCache]: Analyzing trace with hash -192944853, now seen corresponding path program 1 times [2023-11-19 04:52:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:06,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302135960] [2023-11-19 04:52:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:06,050 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 [2023-11-19 04:52:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:06,052 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:52:06,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:07,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:07,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:52:07,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:52:07,301 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:07,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302135960] [2023-11-19 04:52:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302135960] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1492557213] [2023-11-19 04:52:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:07,304 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:07,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:52:07,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:52:07,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 04:52:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:08,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:08,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 04:52:08,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1492557213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:08,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:52:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-19 04:52:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674020000] [2023-11-19 04:52:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:08,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:08,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:08,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:52:08,454 INFO L87 Difference]: Start difference. First operand 318 states and 407 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-19 04:52:08,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:08,603 INFO L93 Difference]: Finished difference Result 339 states and 428 transitions. [2023-11-19 04:52:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 134 [2023-11-19 04:52:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:08,611 INFO L225 Difference]: With dead ends: 339 [2023-11-19 04:52:08,612 INFO L226 Difference]: Without dead ends: 339 [2023-11-19 04:52:08,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:52:08,613 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 9 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:08,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 643 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:52:08,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-19 04:52:08,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338. [2023-11-19 04:52:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 317 states have (on average 1.2397476340694007) internal successors, (393), 329 states have internal predecessors, (393), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-19 04:52:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 427 transitions. [2023-11-19 04:52:08,630 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 427 transitions. Word has length 134 [2023-11-19 04:52:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:08,631 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 427 transitions. [2023-11-19 04:52:08,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-19 04:52:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 427 transitions. [2023-11-19 04:52:08,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 04:52:08,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:08,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:08,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:08,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 04:52:09,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:52:09,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:52:09,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash -701925585, now seen corresponding path program 1 times [2023-11-19 04:52:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:09,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500460959] [2023-11-19 04:52:09,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:09,042 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 [2023-11-19 04:52:09,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:09,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:52:09,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-19 04:52:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:10,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:10,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:52:10,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:52:10,264 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500460959] [2023-11-19 04:52:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500460959] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [963722172] [2023-11-19 04:52:10,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:10,265 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:10,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:52:10,270 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:52:10,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-19 04:52:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:11,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:11,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 04:52:12,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:12,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [963722172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:12,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:52:12,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-19 04:52:12,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900079781] [2023-11-19 04:52:12,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:12,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:52:12,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:12,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:52:12,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:52:12,612 INFO L87 Difference]: Start difference. First operand 338 states and 427 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-19 04:52:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:13,060 INFO L93 Difference]: Finished difference Result 441 states and 556 transitions. [2023-11-19 04:52:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:52:13,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 134 [2023-11-19 04:52:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:13,071 INFO L225 Difference]: With dead ends: 441 [2023-11-19 04:52:13,072 INFO L226 Difference]: Without dead ends: 441 [2023-11-19 04:52:13,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:52:13,073 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 57 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:13,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 680 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:52:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-19 04:52:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2023-11-19 04:52:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 417 states have (on average 1.235011990407674) internal successors, (515), 429 states have internal predecessors, (515), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-19 04:52:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 556 transitions. [2023-11-19 04:52:13,094 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 556 transitions. Word has length 134 [2023-11-19 04:52:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:13,095 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 556 transitions. [2023-11-19 04:52:13,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-19 04:52:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 556 transitions. [2023-11-19 04:52:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 04:52:13,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:13,098 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-19 04:52:13,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:13,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:13,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:13,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:52:13,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash 753769231, now seen corresponding path program 1 times [2023-11-19 04:52:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:13,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712576978] [2023-11-19 04:52:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:13,522 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 [2023-11-19 04:52:13,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:13,523 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:52:13,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 04:52:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:14,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:14,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:52:14,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:52:14,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712576978] [2023-11-19 04:52:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712576978] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:14,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1123820824] [2023-11-19 04:52:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:14,837 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:14,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:52:14,838 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:52:14,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-11-19 04:52:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:16,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:16,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:52:16,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:52:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1123820824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:52:16,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:52:16,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-19 04:52:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621694939] [2023-11-19 04:52:16,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:52:16,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:52:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:52:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 04:52:16,204 INFO L87 Difference]: Start difference. First operand 441 states and 556 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:52:16,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:16,390 INFO L93 Difference]: Finished difference Result 409 states and 502 transitions. [2023-11-19 04:52:16,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:52:16,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 151 [2023-11-19 04:52:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:16,395 INFO L225 Difference]: With dead ends: 409 [2023-11-19 04:52:16,395 INFO L226 Difference]: Without dead ends: 409 [2023-11-19 04:52:16,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:52:16,396 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 39 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:16,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 931 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:52:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-19 04:52:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2023-11-19 04:52:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 383 states have (on average 1.1984334203655354) internal successors, (459), 395 states have internal predecessors, (459), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2023-11-19 04:52:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 500 transitions. [2023-11-19 04:52:16,414 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 500 transitions. Word has length 151 [2023-11-19 04:52:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:16,415 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 500 transitions. [2023-11-19 04:52:16,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 04:52:16,415 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 500 transitions. [2023-11-19 04:52:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 04:52:16,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:16,418 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-11-19 04:52:16,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:16,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:16,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:16,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:52:16,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:52:16,833 INFO L85 PathProgramCache]: Analyzing trace with hash 319561629, now seen corresponding path program 1 times [2023-11-19 04:52:16,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:52:16,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247367339] [2023-11-19 04:52:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:16,835 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 [2023-11-19 04:52:16,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:52:16,836 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 04:52:16,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 04:52:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:17,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:17,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:52:17,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:52:18,028 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:52:18,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247367339] [2023-11-19 04:52:18,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247367339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:18,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2133760568] [2023-11-19 04:52:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:18,029 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:52:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:52:18,031 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:52:18,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-19 04:52:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:19,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:52:19,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 04:52:19,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-19 04:52:19,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2133760568] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:19,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988568576] [2023-11-19 04:52:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:52:19,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:52:19,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:52:19,729 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:52:19,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 04:52:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:52:20,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:52:20,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:52:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 04:52:21,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:52:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-19 04:52:21,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988568576] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:52:21,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:52:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-11-19 04:52:21,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808990002] [2023-11-19 04:52:21,751 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:52:21,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:52:21,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:52:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:52:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:52:21,754 INFO L87 Difference]: Start difference. First operand 407 states and 500 transitions. Second operand has 12 states, 12 states have (on average 31.5) internal successors, (378), 12 states have internal predecessors, (378), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 04:52:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:52:23,551 INFO L93 Difference]: Finished difference Result 826 states and 1015 transitions. [2023-11-19 04:52:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:52:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 31.5) internal successors, (378), 12 states have internal predecessors, (378), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 151 [2023-11-19 04:52:23,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:52:23,558 INFO L225 Difference]: With dead ends: 826 [2023-11-19 04:52:23,558 INFO L226 Difference]: Without dead ends: 826 [2023-11-19 04:52:23,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:52:23,559 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 867 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:52:23,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 3063 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:52:23,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-11-19 04:52:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 824. [2023-11-19 04:52:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 784 states have (on average 1.1862244897959184) internal successors, (930), 796 states have internal predecessors, (930), 34 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (42), 25 states have call predecessors, (42), 34 states have call successors, (42) [2023-11-19 04:52:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1006 transitions. [2023-11-19 04:52:23,589 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1006 transitions. Word has length 151 [2023-11-19 04:52:23,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:52:23,589 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1006 transitions. [2023-11-19 04:52:23,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.5) internal successors, (378), 12 states have internal predecessors, (378), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 04:52:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1006 transitions. [2023-11-19 04:52:23,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-11-19 04:52:23,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:52:23,601 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:52:23,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 04:52:23,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6d1a5c4-7bfd-4e99-8872-49947ab3df88/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0