./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91 --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 d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:45,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:45,159 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-24 23:48:45,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:45,171 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:45,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:45,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:45,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:45,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:45,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:45,217 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:45,217 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:45,218 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:45,219 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:48:45,220 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:45,220 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:45,222 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:48:45,222 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:48:45,223 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:45,223 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:48:45,224 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:48:45,225 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:48:45,225 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:48:45,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:48:45,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:45,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:48:45,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:48:45,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:45,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:48:45,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:45,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:48:45,231 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:48:45,231 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:48:45,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:45,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:48:45,232 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:48:45,232 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:48:45,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:48:45,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:48:45,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:45,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:45,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:45,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:45,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:45,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:45,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:45,235 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:48:45,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:48:45,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:45,235 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:45,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:45,236 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_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2023-11-24 23:48:45,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:45,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:45,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:45,567 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:45,568 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:45,569 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2023-11-24 23:48:48,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:49,082 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:49,082 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2023-11-24 23:48:49,112 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data/b64918637/58264d943f964901adc821b7262e4ec7/FLAGe24ae5c29 [2023-11-24 23:48:49,126 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data/b64918637/58264d943f964901adc821b7262e4ec7 [2023-11-24 23:48:49,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:49,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:49,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:49,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:49,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:49,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:49" (1/1) ... [2023-11-24 23:48:49,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec168f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:49, skipping insertion in model container [2023-11-24 23:48:49,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:49" (1/1) ... [2023-11-24 23:48:49,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:50,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:50,071 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) [2023-11-24 23:48:50,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@113f9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:50, skipping insertion in model container [2023-11-24 23:48:50,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:50,078 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:48:50,080 INFO L158 Benchmark]: Toolchain (without parser) took 948.28ms. Allocated memory is still 161.5MB. Free memory was 128.5MB in the beginning and 107.8MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:48:50,080 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:48:50,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 945.57ms. Allocated memory is still 161.5MB. Free memory was 128.2MB in the beginning and 107.8MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:48:50,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 945.57ms. Allocated memory is still 161.5MB. Free memory was 128.2MB in the beginning and 107.8MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91 --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 d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:52,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:52,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-24 23:48:52,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:52,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:52,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:52,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:52,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:52,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:52,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:52,878 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:52,879 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:52,879 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:52,881 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:52,881 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:52,882 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:52,883 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:48:52,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:48:52,884 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:52,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:48:52,885 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:48:52,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:52,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:48:52,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:52,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:48:52,887 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:48:52,888 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:48:52,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:52,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:48:52,889 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:48:52,891 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:48:52,891 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:48:52,892 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:48:52,892 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:48:52,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:48:52,893 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:52,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:52,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:48:52,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:52,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:52,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:52,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:52,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:52,896 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:48:52,896 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:48:52,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:52,897 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:52,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:52,897 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_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2023-11-24 23:48:53,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:53,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:53,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:53,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:53,373 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:53,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2023-11-24 23:48:56,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:56,850 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:56,851 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2023-11-24 23:48:56,893 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data/bf8ad78d6/f8213d2af62d46c7bd04b25166bd58e9/FLAG182619cfa [2023-11-24 23:48:56,911 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/data/bf8ad78d6/f8213d2af62d46c7bd04b25166bd58e9 [2023-11-24 23:48:56,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:56,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:56,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:56,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:56,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:56,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2f93f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56, skipping insertion in model container [2023-11-24 23:48:56,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:57,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:57,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:57,757 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:48:57,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:57,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:57,942 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:48:58,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:58,138 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:58,146 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:48:58,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58 WrapperNode [2023-11-24 23:48:58,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:58,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:58,148 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:48:58,148 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:48:58,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,276 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1045 [2023-11-24 23:48:58,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:58,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:48:58,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:48:58,278 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:48:58,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:48:58,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:48:58,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:48:58,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:48:58,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (1/1) ... [2023-11-24 23:48:58,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:58,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:58,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:48:58,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:48:58,522 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:48:58,522 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:48:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:48:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:48:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:48:58,525 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:48:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:48:58,525 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:48:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:48:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:48:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:48:58,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:48:58,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:48:58,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:48:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:48:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:48:58,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:48:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:48:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:48:58,803 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:48:58,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:49:07,172 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:49:07,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:49:07,232 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-24 23:49:07,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:07 BoogieIcfgContainer [2023-11-24 23:49:07,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:49:07,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:49:07,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:49:07,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:49:07,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:48:56" (1/3) ... [2023-11-24 23:49:07,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d040b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:07, skipping insertion in model container [2023-11-24 23:49:07,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:58" (2/3) ... [2023-11-24 23:49:07,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d040b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:07, skipping insertion in model container [2023-11-24 23:49:07,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:07" (3/3) ... [2023-11-24 23:49:07,245 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-2.i [2023-11-24 23:49:07,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:49:07,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:49:07,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:49:07,329 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;@205bb39e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:49:07,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:49:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-24 23:49:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:49:07,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:07,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:07,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:07,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash 588329387, now seen corresponding path program 1 times [2023-11-24 23:49:07,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:07,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108272530] [2023-11-24 23:49:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:07,362 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 [2023-11-24 23:49:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:07,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:07,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:07,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:49:07,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:07,688 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:07,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:07,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108272530] [2023-11-24 23:49:07,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108272530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:07,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:07,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116441288] [2023-11-24 23:49:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:07,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:49:07,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:49:07,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:49:07,751 INFO L87 Difference]: Start difference. First operand has 212 states, 196 states have (on average 1.6785714285714286) internal successors, (329), 205 states have internal predecessors, (329), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:07,855 INFO L93 Difference]: Finished difference Result 210 states and 277 transitions. [2023-11-24 23:49:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:49:07,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 23:49:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:07,877 INFO L225 Difference]: With dead ends: 210 [2023-11-24 23:49:07,878 INFO L226 Difference]: Without dead ends: 209 [2023-11-24 23:49:07,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:49:07,885 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:07,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:49:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-24 23:49:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-24 23:49:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 195 states have (on average 1.323076923076923) internal successors, (258), 202 states have internal predecessors, (258), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-24 23:49:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 276 transitions. [2023-11-24 23:49:07,986 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 276 transitions. Word has length 10 [2023-11-24 23:49:07,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:07,987 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 276 transitions. [2023-11-24 23:49:07,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 276 transitions. [2023-11-24 23:49:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:49:07,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:07,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:08,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-24 23:49:08,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:08,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:08,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:08,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2000743177, now seen corresponding path program 1 times [2023-11-24 23:49:08,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:08,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661703592] [2023-11-24 23:49:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:08,194 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 [2023-11-24 23:49:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:08,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:08,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:08,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:08,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:08,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:08,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:08,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661703592] [2023-11-24 23:49:08,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661703592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:08,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415098955] [2023-11-24 23:49:08,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:08,548 INFO L87 Difference]: Start difference. First operand 209 states and 276 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:09,537 INFO L93 Difference]: Finished difference Result 339 states and 452 transitions. [2023-11-24 23:49:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:49:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:09,541 INFO L225 Difference]: With dead ends: 339 [2023-11-24 23:49:09,541 INFO L226 Difference]: Without dead ends: 339 [2023-11-24 23:49:09,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:09,543 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 163 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:09,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 499 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:49:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-11-24 23:49:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 308. [2023-11-24 23:49:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.328719723183391) internal successors, (384), 301 states have internal predecessors, (384), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:49:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 412 transitions. [2023-11-24 23:49:09,568 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 412 transitions. Word has length 12 [2023-11-24 23:49:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:09,568 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 412 transitions. [2023-11-24 23:49:09,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 412 transitions. [2023-11-24 23:49:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:49:09,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:09,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:09,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:09,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:09,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:09,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2002590219, now seen corresponding path program 1 times [2023-11-24 23:49:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:09,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584607039] [2023-11-24 23:49:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:09,775 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 [2023-11-24 23:49:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:09,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:09,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:09,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:49:09,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:10,039 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:49:10,040 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:49:10,041 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:49:10,067 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 [2023-11-24 23:49:10,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:49:10,186 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 [2023-11-24 23:49:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:10,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:10,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:10,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584607039] [2023-11-24 23:49:10,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584607039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:10,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:10,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:10,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047834779] [2023-11-24 23:49:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:10,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:10,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:10,221 INFO L87 Difference]: Start difference. First operand 308 states and 412 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:15,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:20,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:20,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:20,532 INFO L93 Difference]: Finished difference Result 419 states and 572 transitions. [2023-11-24 23:49:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:20,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:49:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:20,537 INFO L225 Difference]: With dead ends: 419 [2023-11-24 23:49:20,537 INFO L226 Difference]: Without dead ends: 419 [2023-11-24 23:49:20,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:20,539 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 168 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:20,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 674 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2023-11-24 23:49:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-24 23:49:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 307. [2023-11-24 23:49:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 288 states have (on average 1.3263888888888888) internal successors, (382), 300 states have internal predecessors, (382), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:49:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 410 transitions. [2023-11-24 23:49:20,565 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 410 transitions. Word has length 12 [2023-11-24 23:49:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:20,565 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 410 transitions. [2023-11-24 23:49:20,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:20,566 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 410 transitions. [2023-11-24 23:49:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-24 23:49:20,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:20,569 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:20,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:20,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:20,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:20,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:20,772 INFO L85 PathProgramCache]: Analyzing trace with hash -560959006, now seen corresponding path program 1 times [2023-11-24 23:49:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:20,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104196436] [2023-11-24 23:49:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:20,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:20,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:20,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:20,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:21,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:21,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:21,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:49:21,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:21,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:21,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104196436] [2023-11-24 23:49:21,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104196436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:21,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:21,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616544996] [2023-11-24 23:49:21,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:21,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:21,415 INFO L87 Difference]: Start difference. First operand 307 states and 410 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:49:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:21,578 INFO L93 Difference]: Finished difference Result 315 states and 402 transitions. [2023-11-24 23:49:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:21,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 81 [2023-11-24 23:49:21,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:21,582 INFO L225 Difference]: With dead ends: 315 [2023-11-24 23:49:21,582 INFO L226 Difference]: Without dead ends: 315 [2023-11-24 23:49:21,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:21,584 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:21,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 705 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:49:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-24 23:49:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2023-11-24 23:49:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 294 states have (on average 1.2653061224489797) internal successors, (372), 306 states have internal predecessors, (372), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:49:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 400 transitions. [2023-11-24 23:49:21,602 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 400 transitions. Word has length 81 [2023-11-24 23:49:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:21,603 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 400 transitions. [2023-11-24 23:49:21,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:49:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 400 transitions. [2023-11-24 23:49:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-24 23:49:21,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:21,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:21,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:21,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:21,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:21,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash -484998930, now seen corresponding path program 1 times [2023-11-24 23:49:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130045141] [2023-11-24 23:49:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:21,819 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 [2023-11-24 23:49:21,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:21,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:21,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:22,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:22,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:22,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:22,531 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:22,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130045141] [2023-11-24 23:49:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130045141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:22,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116603239] [2023-11-24 23:49:22,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:22,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:22,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:22,534 INFO L87 Difference]: Start difference. First operand 313 states and 400 transitions. Second operand has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:49:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:22,642 INFO L93 Difference]: Finished difference Result 315 states and 403 transitions. [2023-11-24 23:49:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:22,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2023-11-24 23:49:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:22,646 INFO L225 Difference]: With dead ends: 315 [2023-11-24 23:49:22,646 INFO L226 Difference]: Without dead ends: 315 [2023-11-24 23:49:22,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:22,648 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:22,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 773 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:49:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-24 23:49:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-11-24 23:49:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 295 states have (on average 1.2677966101694915) internal successors, (374), 308 states have internal predecessors, (374), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-24 23:49:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 403 transitions. [2023-11-24 23:49:22,665 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 403 transitions. Word has length 81 [2023-11-24 23:49:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:22,665 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 403 transitions. [2023-11-24 23:49:22,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:49:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 403 transitions. [2023-11-24 23:49:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-24 23:49:22,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:22,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:22,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:22,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:22,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:22,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash -933938814, now seen corresponding path program 1 times [2023-11-24 23:49:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784801188] [2023-11-24 23:49:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:22,886 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 [2023-11-24 23:49:22,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:22,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:22,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:23,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:23,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:49:23,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:49:23,781 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:23,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784801188] [2023-11-24 23:49:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784801188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1749501544] [2023-11-24 23:49:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:23,782 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:49:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:49:23,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:49:23,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-24 23:49:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:24,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:24,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-24 23:49:24,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:24,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1749501544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:24,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-24 23:49:24,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2023-11-24 23:49:24,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050245713] [2023-11-24 23:49:24,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:24,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:24,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:24,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:24,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:49:24,917 INFO L87 Difference]: Start difference. First operand 315 states and 403 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:49:27,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:29,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:32,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:33,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:33,308 INFO L93 Difference]: Finished difference Result 328 states and 410 transitions. [2023-11-24 23:49:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:49:33,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-11-24 23:49:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:33,312 INFO L225 Difference]: With dead ends: 328 [2023-11-24 23:49:33,312 INFO L226 Difference]: Without dead ends: 328 [2023-11-24 23:49:33,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:49:33,313 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 432 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:33,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 425 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2023-11-24 23:49:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-24 23:49:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2023-11-24 23:49:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 244 states have (on average 1.2336065573770492) internal successors, (301), 252 states have internal predecessors, (301), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 23:49:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 320 transitions. [2023-11-24 23:49:33,334 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 320 transitions. Word has length 83 [2023-11-24 23:49:33,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:33,335 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 320 transitions. [2023-11-24 23:49:33,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:49:33,335 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 320 transitions. [2023-11-24 23:49:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-24 23:49:33,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:33,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:33,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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 [2023-11-24 23:49:33,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-11-24 23:49:33,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-24 23:49:33,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:33,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:33,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1995822790, now seen corresponding path program 1 times [2023-11-24 23:49:33,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:33,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482648476] [2023-11-24 23:49:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:33,749 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 [2023-11-24 23:49:33,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:33,750 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:33,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 23:49:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:34,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:34,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:49:34,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:49:34,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:34,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482648476] [2023-11-24 23:49:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482648476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:34,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2089255585] [2023-11-24 23:49:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:34,545 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:49:34,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:49:34,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:49:34,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-24 23:49:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:35,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:35,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:49:35,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:49:35,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2089255585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:35,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482989326] [2023-11-24 23:49:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:35,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:35,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:49:35,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:49:35,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 23:49:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:36,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:49:36,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:49:36,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482989326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:36,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-24 23:49:36,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5, 5] total 10 [2023-11-24 23:49:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349435903] [2023-11-24 23:49:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-24 23:49:36,470 INFO L87 Difference]: Start difference. First operand 259 states and 320 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:49:39,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:41,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:49:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:43,229 INFO L93 Difference]: Finished difference Result 261 states and 322 transitions. [2023-11-24 23:49:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:49:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-11-24 23:49:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:43,232 INFO L225 Difference]: With dead ends: 261 [2023-11-24 23:49:43,233 INFO L226 Difference]: Without dead ends: 261 [2023-11-24 23:49:43,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:49:43,234 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 225 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:43,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 469 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2023-11-24 23:49:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-24 23:49:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2023-11-24 23:49:43,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.2326530612244897) internal successors, (302), 253 states have internal predecessors, (302), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-24 23:49:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2023-11-24 23:49:43,244 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 92 [2023-11-24 23:49:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:43,245 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2023-11-24 23:49:43,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 23:49:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2023-11-24 23:49:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-24 23:49:43,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:43,247 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:43,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:43,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:43,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:43,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:49:43,857 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:49:43,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1997669832, now seen corresponding path program 1 times [2023-11-24 23:49:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:43,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034085005] [2023-11-24 23:49:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:43,859 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 [2023-11-24 23:49:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:43,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/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) [2023-11-24 23:49:43,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 23:49:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:44,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:44,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:49:44,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:49:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:49:44,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:44,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034085005] [2023-11-24 23:49:44,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034085005] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:49:44,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [101520835] [2023-11-24 23:49:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:49:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:49:44,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:49:44,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a05ee00-f513-4f57-bc40-27423a8085f2/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process