./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:12:18,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:12:18,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 04:12:18,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:12:18,308 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:12:18,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:12:18,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:12:18,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:12:18,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:12:18,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:12:18,365 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:12:18,366 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:12:18,367 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:12:18,369 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:12:18,369 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:12:18,370 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:12:18,370 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:12:18,371 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:12:18,371 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:12:18,372 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:12:18,372 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:12:18,373 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:12:18,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:12:18,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:12:18,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:12:18,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:12:18,376 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:12:18,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:12:18,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:12:18,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:12:18,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:12:18,379 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:12:18,380 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:12:18,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:12:18,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:12:18,380 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:12:18,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:12:18,381 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:12:18,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:12:18,381 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:12:18,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:12:18,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:12:18,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:18,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:12:18,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:12:18,384 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:12:18,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:12:18,384 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:12:18,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:12:18,385 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_138d719d-13a7-44a6-a8fa-3b53204c88f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2023-11-19 04:12:18,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:12:18,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:12:18,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:12:18,702 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:12:18,703 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:12:18,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-19 04:12:22,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:12:22,570 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:12:22,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-19 04:12:22,600 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data/76276c862/157084af43ad43408500c3c55c7e113d/FLAGfdea65f1f [2023-11-19 04:12:22,620 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data/76276c862/157084af43ad43408500c3c55c7e113d [2023-11-19 04:12:22,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:12:22,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:12:22,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:22,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:12:22,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:12:22,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:22" (1/1) ... [2023-11-19 04:12:22,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c434751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:22, skipping insertion in model container [2023-11-19 04:12:22,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:22" (1/1) ... [2023-11-19 04:12:22,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:12:23,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:23,353 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 04:12:23,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58e82c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:23, skipping insertion in model container [2023-11-19 04:12:23,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:23,355 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:12:23,359 INFO L158 Benchmark]: Toolchain (without parser) took 733.16ms. Allocated memory is still 125.8MB. Free memory was 78.8MB in the beginning and 58.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 04:12:23,361 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 102.8MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:12:23,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 728.31ms. Allocated memory is still 125.8MB. Free memory was 78.4MB in the beginning and 58.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:12:23,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 102.8MB. Free memory is still 53.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 728.31ms. Allocated memory is still 125.8MB. Free memory was 78.4MB in the beginning and 58.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:12:25,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:12:26,022 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 04:12:26,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:12:26,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:12:26,085 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:12:26,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:12:26,087 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:12:26,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:12:26,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:12:26,093 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:12:26,094 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:12:26,094 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:12:26,096 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:12:26,097 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:12:26,097 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:12:26,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:12:26,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:12:26,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:12:26,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:12:26,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:12:26,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:12:26,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:12:26,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:12:26,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:12:26,103 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:12:26,104 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:12:26,104 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:12:26,104 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:12:26,105 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:12:26,106 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:12:26,107 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:12:26,107 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:12:26,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:12:26,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:12:26,108 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:12:26,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:12:26,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:12:26,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:12:26,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:26,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:12:26,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:12:26,111 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:12:26,111 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:12:26,111 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:12:26,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:12:26,112 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_138d719d-13a7-44a6-a8fa-3b53204c88f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2023-11-19 04:12:26,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:12:26,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:12:26,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:12:26,508 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:12:26,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:12:26,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-19 04:12:29,869 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:12:30,265 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:12:30,266 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-19 04:12:30,298 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data/4f860a2fa/97cc16f3dce94a80a871b59a89666c57/FLAG150567a0f [2023-11-19 04:12:30,320 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/data/4f860a2fa/97cc16f3dce94a80a871b59a89666c57 [2023-11-19 04:12:30,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:12:30,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:12:30,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:30,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:12:30,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:12:30,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:30" (1/1) ... [2023-11-19 04:12:30,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74663155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:30, skipping insertion in model container [2023-11-19 04:12:30,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:12:30" (1/1) ... [2023-11-19 04:12:30,434 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:12:31,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:31,344 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:12:31,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:12:31,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:31,530 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:12:31,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:12:31,720 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:12:31,729 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:12:31,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31 WrapperNode [2023-11-19 04:12:31,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:12:31,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:31,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:12:31,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:12:31,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:31,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:31,928 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1160 [2023-11-19 04:12:31,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:12:31,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:12:31,932 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:12:31,932 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:12:31,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:31,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:31,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:31,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:32,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:32,091 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:32,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:32,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:32,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:12:32,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:12:32,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:12:32,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:12:32,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (1/1) ... [2023-11-19 04:12:32,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:12:32,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:32,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:12:32,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:12:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 04:12:32,242 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 04:12:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 04:12:32,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:12:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 04:12:32,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 04:12:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 04:12:32,243 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 04:12:32,243 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-19 04:12:32,244 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-19 04:12:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:12:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:12:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:12:32,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:12:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 04:12:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:12:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:12:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:12:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:12:32,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:12:32,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:12:32,562 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:12:32,568 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:12:41,712 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:12:41,739 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:12:41,740 INFO L302 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-19 04:12:41,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:12:41 BoogieIcfgContainer [2023-11-19 04:12:41,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:12:41,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:12:41,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:12:41,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:12:41,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:12:30" (1/3) ... [2023-11-19 04:12:41,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6cd86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:12:41, skipping insertion in model container [2023-11-19 04:12:41,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:12:31" (2/3) ... [2023-11-19 04:12:41,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6cd86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:12:41, skipping insertion in model container [2023-11-19 04:12:41,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:12:41" (3/3) ... [2023-11-19 04:12:41,770 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-2.i [2023-11-19 04:12:41,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:12:41,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:12:41,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:12:41,889 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;@222a246b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:12:41,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:12:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 268 states, 239 states have (on average 1.6652719665271967) internal successors, (398), 258 states have internal predecessors, (398), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-19 04:12:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:12:41,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:41,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:41,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:12:41,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1977871756, now seen corresponding path program 1 times [2023-11-19 04:12:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:41,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284278446] [2023-11-19 04:12:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:41,942 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 04:12:41,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:41,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:41,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:42,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:12:42,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:42,303 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 04:12:42,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:42,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:42,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284278446] [2023-11-19 04:12:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284278446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:42,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:42,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:12:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515519438] [2023-11-19 04:12:42,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:42,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:12:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:12:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:12:42,347 INFO L87 Difference]: Start difference. First operand has 268 states, 239 states have (on average 1.6652719665271967) internal successors, (398), 258 states have internal predecessors, (398), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 04:12:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:42,389 INFO L93 Difference]: Finished difference Result 266 states and 362 transitions. [2023-11-19 04:12:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:12:42,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 04:12:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:42,405 INFO L225 Difference]: With dead ends: 266 [2023-11-19 04:12:42,405 INFO L226 Difference]: Without dead ends: 264 [2023-11-19 04:12:42,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:12:42,412 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:42,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:12:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-19 04:12:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-19 04:12:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 237 states have (on average 1.3417721518987342) internal successors, (318), 254 states have internal predecessors, (318), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:12:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 360 transitions. [2023-11-19 04:12:42,488 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 360 transitions. Word has length 11 [2023-11-19 04:12:42,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:42,489 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 360 transitions. [2023-11-19 04:12:42,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 04:12:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 360 transitions. [2023-11-19 04:12:42,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:12:42,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:42,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:42,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:42,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:42,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:12:42,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 984879060, now seen corresponding path program 1 times [2023-11-19 04:12:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:42,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169291165] [2023-11-19 04:12:42,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:42,696 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 04:12:42,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:42,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:42,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:42,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:12:42,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:42,981 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:12:42,982 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:12:42,983 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 04:12:42,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-19 04:12:43,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 04:12:43,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-19 04:12:43,142 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 04:12:43,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:43,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:43,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169291165] [2023-11-19 04:12:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169291165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:43,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:43,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:12:43,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232033896] [2023-11-19 04:12:43,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:12:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:12:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:12:43,148 INFO L87 Difference]: Start difference. First operand 264 states and 360 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:47,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:12:49,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:12:54,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:12:56,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 04:12:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:57,330 INFO L93 Difference]: Finished difference Result 408 states and 551 transitions. [2023-11-19 04:12:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:12:57,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 04:12:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:57,339 INFO L225 Difference]: With dead ends: 408 [2023-11-19 04:12:57,339 INFO L226 Difference]: Without dead ends: 408 [2023-11-19 04:12:57,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:12:57,342 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 176 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:57,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 943 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 188 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2023-11-19 04:12:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-19 04:12:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 266. [2023-11-19 04:12:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 239 states have (on average 1.3389121338912133) internal successors, (320), 256 states have internal predecessors, (320), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:12:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 362 transitions. [2023-11-19 04:12:57,392 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 362 transitions. Word has length 13 [2023-11-19 04:12:57,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:57,393 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 362 transitions. [2023-11-19 04:12:57,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 362 transitions. [2023-11-19 04:12:57,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:12:57,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:57,398 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] [2023-11-19 04:12:57,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:57,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:57,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:12:57,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash -554020586, now seen corresponding path program 1 times [2023-11-19 04:12:57,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:57,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528168032] [2023-11-19 04:12:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:57,603 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 04:12:57,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:57,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:57,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:58,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:12:58,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:58,268 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 04:12:58,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:58,268 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:58,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528168032] [2023-11-19 04:12:58,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528168032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:58,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:58,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:12:58,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085763093] [2023-11-19 04:12:58,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:58,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:12:58,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:12:58,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:12:58,273 INFO L87 Difference]: Start difference. First operand 266 states and 362 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:58,483 INFO L93 Difference]: Finished difference Result 270 states and 358 transitions. [2023-11-19 04:12:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:12:58,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 04:12:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:58,487 INFO L225 Difference]: With dead ends: 270 [2023-11-19 04:12:58,488 INFO L226 Difference]: Without dead ends: 270 [2023-11-19 04:12:58,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 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 04:12:58,490 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 37 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:58,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 966 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:12:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-19 04:12:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2023-11-19 04:12:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 242 states have (on average 1.3016528925619835) internal successors, (315), 259 states have internal predecessors, (315), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:12:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 357 transitions. [2023-11-19 04:12:58,516 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 357 transitions. Word has length 67 [2023-11-19 04:12:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:58,517 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 357 transitions. [2023-11-19 04:12:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 357 transitions. [2023-11-19 04:12:58,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:12:58,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:58,522 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] [2023-11-19 04:12:58,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:58,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:58,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:12:58,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:58,729 INFO L85 PathProgramCache]: Analyzing trace with hash -575907190, now seen corresponding path program 1 times [2023-11-19 04:12:58,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:58,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028855476] [2023-11-19 04:12:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:58,731 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 04:12:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:58,733 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:58,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:12:59,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:12:59,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:59,521 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 04:12:59,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:12:59,521 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:12:59,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028855476] [2023-11-19 04:12:59,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028855476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:12:59,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:12:59,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:12:59,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875493285] [2023-11-19 04:12:59,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:12:59,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:12:59,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:12:59,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:12:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:12:59,526 INFO L87 Difference]: Start difference. First operand 269 states and 357 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:59,668 INFO L93 Difference]: Finished difference Result 263 states and 347 transitions. [2023-11-19 04:12:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:12:59,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 04:12:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:59,672 INFO L225 Difference]: With dead ends: 263 [2023-11-19 04:12:59,672 INFO L226 Difference]: Without dead ends: 263 [2023-11-19 04:12:59,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:12:59,674 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 7 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:59,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 965 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:12:59,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-19 04:12:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-11-19 04:12:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 236 states have (on average 1.2923728813559323) internal successors, (305), 253 states have internal predecessors, (305), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-19 04:12:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 347 transitions. [2023-11-19 04:12:59,691 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 347 transitions. Word has length 67 [2023-11-19 04:12:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:59,692 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 347 transitions. [2023-11-19 04:12:59,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:12:59,693 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 347 transitions. [2023-11-19 04:12:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 04:12:59,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:59,696 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] [2023-11-19 04:12:59,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:59,905 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:12:59,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash -181540404, now seen corresponding path program 1 times [2023-11-19 04:12:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:12:59,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1215712439] [2023-11-19 04:12:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:59,908 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 04:12:59,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:12:59,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:12:59,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:13:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:00,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:13:00,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:00,916 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 04:13:00,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:00,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:13:00,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1215712439] [2023-11-19 04:13:00,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1215712439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:00,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:13:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111762529] [2023-11-19 04:13:00,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:00,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:13:00,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:13:00,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:13:00,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:13:00,919 INFO L87 Difference]: Start difference. First operand 263 states and 347 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:02,365 INFO L93 Difference]: Finished difference Result 402 states and 518 transitions. [2023-11-19 04:13:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:13:02,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 04:13:02,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:02,372 INFO L225 Difference]: With dead ends: 402 [2023-11-19 04:13:02,372 INFO L226 Difference]: Without dead ends: 402 [2023-11-19 04:13:02,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 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 04:13:02,375 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 133 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:02,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 684 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 04:13:02,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-19 04:13:02,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 369. [2023-11-19 04:13:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 341 states have (on average 1.2668621700879765) internal successors, (432), 358 states have internal predecessors, (432), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 04:13:02,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 476 transitions. [2023-11-19 04:13:02,411 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 476 transitions. Word has length 67 [2023-11-19 04:13:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:02,414 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 476 transitions. [2023-11-19 04:13:02,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:13:02,415 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 476 transitions. [2023-11-19 04:13:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 04:13:02,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:02,423 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] [2023-11-19 04:13:02,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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)] Ended with exit code 0 [2023-11-19 04:13:02,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:13:02,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:13:02,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1210231181, now seen corresponding path program 1 times [2023-11-19 04:13:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:13:02,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65660545] [2023-11-19 04:13:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:02,632 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 04:13:02,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:13:02,633 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:13:02,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 (7)] Waiting until timeout for monitored process [2023-11-19 04:13:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:03,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:13:03,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:13:03,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:13:03,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:13:03,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65660545] [2023-11-19 04:13:03,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65660545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:13:03,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:13:03,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:13:03,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379045600] [2023-11-19 04:13:03,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:13:03,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:13:03,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:13:03,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:13:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:13:03,299 INFO L87 Difference]: Start difference. First operand 369 states and 476 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:13:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:03,386 INFO L93 Difference]: Finished difference Result 372 states and 480 transitions. [2023-11-19 04:13:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:13:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2023-11-19 04:13:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:03,400 INFO L225 Difference]: With dead ends: 372 [2023-11-19 04:13:03,404 INFO L226 Difference]: Without dead ends: 372 [2023-11-19 04:13:03,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 04:13:03,406 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 2 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:03,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1022 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:13:03,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-19 04:13:03,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2023-11-19 04:13:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 343 states have (on average 1.2682215743440233) internal successors, (435), 361 states have internal predecessors, (435), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-19 04:13:03,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 480 transitions. [2023-11-19 04:13:03,428 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 480 transitions. Word has length 82 [2023-11-19 04:13:03,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 480 transitions. [2023-11-19 04:13:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 04:13:03,429 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 480 transitions. [2023-11-19 04:13:03,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 04:13:03,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:03,432 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] [2023-11-19 04:13:03,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:03,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:13:03,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:13:03,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -2062939407, now seen corresponding path program 1 times [2023-11-19 04:13:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:13:03,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955495736] [2023-11-19 04:13:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:03,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:13:03,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:13:03,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:13:03,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:13:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:04,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:13:04,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:13:04,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:13:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:13:04,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:13:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955495736] [2023-11-19 04:13:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955495736] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:13:04,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [487198554] [2023-11-19 04:13:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:04,636 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:13:04,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:13:04,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:13:04,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-19 04:13:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:05,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:13:05,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:13:05,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:13:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:13:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [487198554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:13:05,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133360264] [2023-11-19 04:13:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:13:05,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:05,979 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:05,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:13:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:13:06,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 04:13:06,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:13:06,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:13:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:13:06,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133360264] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:13:06,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:13:06,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-19 04:13:06,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458872388] [2023-11-19 04:13:06,829 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:13:06,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 04:13:06,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:13:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 04:13:06,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:13:06,832 INFO L87 Difference]: Start difference. First operand 372 states and 480 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:13:07,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:13:07,438 INFO L93 Difference]: Finished difference Result 387 states and 502 transitions. [2023-11-19 04:13:07,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:13:07,441 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2023-11-19 04:13:07,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:13:07,444 INFO L225 Difference]: With dead ends: 387 [2023-11-19 04:13:07,445 INFO L226 Difference]: Without dead ends: 387 [2023-11-19 04:13:07,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:13:07,446 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 20 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:13:07,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1695 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:13:07,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-11-19 04:13:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2023-11-19 04:13:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 353 states have (on average 1.2832861189801699) internal successors, (453), 371 states have internal predecessors, (453), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-19 04:13:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 498 transitions. [2023-11-19 04:13:07,472 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 498 transitions. Word has length 84 [2023-11-19 04:13:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:13:07,473 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 498 transitions. [2023-11-19 04:13:07,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 04:13:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 498 transitions. [2023-11-19 04:13:07,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 04:13:07,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:13:07,476 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:13:07,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-11-19 04:13:07,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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)] Ended with exit code 0 [2023-11-19 04:13:07,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:13:08,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:08,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 04:13:08,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:13:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash -975976589, now seen corresponding path program 2 times [2023-11-19 04:13:08,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:13:08,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485636139] [2023-11-19 04:13:08,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:13:08,086 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 04:13:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:13:08,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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 04:13:08,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/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)] Waiting until timeout for monitored process [2023-11-19 04:13:09,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:13:09,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:13:09,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:13:09,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:13:09,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:13:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:13:10,129 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:13:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485636139] [2023-11-19 04:13:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485636139] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:13:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [493786268] [2023-11-19 04:13:10,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:13:10,130 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:13:10,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:13:10,132 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:13:10,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-19 04:13:17,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:13:17,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:13:17,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:13:17,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:13:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 04:13:18,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:13:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 04:13:18,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [493786268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:13:18,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539985398] [2023-11-19 04:13:18,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:13:18,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:13:18,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:13:18,161 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:13:18,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_138d719d-13a7-44a6-a8fa-3b53204c88f9/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process