./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:18:22,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:22,587 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-19 05:18:22,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:22,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:22,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:22,623 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:22,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:22,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:22,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:22,626 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:22,627 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:22,627 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:22,628 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:18:22,629 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:22,629 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:22,630 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:18:22,631 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:18:22,632 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:22,635 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:18:22,636 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:18:22,637 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:18:22,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:18:22,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:18:22,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:22,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:18:22,645 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:18:22,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:22,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:18:22,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:22,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:18:22,649 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:18:22,650 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:18:22,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:22,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:18:22,652 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:18:22,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:18:22,653 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:18:22,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:18:22,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:22,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:22,654 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:22,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:22,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:22,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:22,655 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:18:22,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:18:22,656 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:22,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:22,656 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_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2023-11-19 05:18:22,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:23,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:23,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:23,036 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:23,037 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:23,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-19 05:18:26,100 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:26,514 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:26,519 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-19 05:18:26,545 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data/4f6f697e0/2493d25544de45608f349f8ad6f4f7a5/FLAGda24aff53 [2023-11-19 05:18:26,560 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data/4f6f697e0/2493d25544de45608f349f8ad6f4f7a5 [2023-11-19 05:18:26,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:26,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:26,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:26,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:26,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:26,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:26" (1/1) ... [2023-11-19 05:18:26,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e64d05a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:26, skipping insertion in model container [2023-11-19 05:18:26,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:26" (1/1) ... [2023-11-19 05:18:26,636 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:27,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:27,162 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 05:18:27,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1aa1d441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:27, skipping insertion in model container [2023-11-19 05:18:27,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:27,164 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:18:27,166 INFO L158 Benchmark]: Toolchain (without parser) took 601.03ms. Allocated memory is still 127.9MB. Free memory was 82.5MB in the beginning and 65.1MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:18:27,167 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:18:27,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.05ms. Allocated memory is still 127.9MB. Free memory was 82.5MB in the beginning and 65.1MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:18:27,169 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.05ms. Allocated memory is still 127.9MB. Free memory was 82.5MB in the beginning and 65.1MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:18:29,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:18:29,836 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-19 05:18:29,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:18:29,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:18:29,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:18:29,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:18:29,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:18:29,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:18:29,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:18:29,899 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:18:29,900 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:18:29,900 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:18:29,902 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:18:29,902 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:18:29,903 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:18:29,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:18:29,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:18:29,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:18:29,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:18:29,906 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:18:29,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:18:29,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:18:29,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:18:29,908 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:18:29,908 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:18:29,909 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:18:29,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:18:29,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:18:29,910 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:18:29,911 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:18:29,911 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:18:29,912 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:18:29,912 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:18:29,912 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:18:29,912 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:18:29,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:18:29,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:18:29,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:18:29,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:29,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:18:29,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:18:29,915 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:18:29,915 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:18:29,915 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:18:29,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:18:29,916 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_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2023-11-19 05:18:30,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:18:30,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:18:30,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:18:30,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:18:30,382 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:18:30,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-19 05:18:33,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:18:34,152 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:18:34,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2023-11-19 05:18:34,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data/0239b51c1/0aa16b84f44d4035a778f7d7f5e76c0e/FLAGbfeba71fb [2023-11-19 05:18:34,314 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/data/0239b51c1/0aa16b84f44d4035a778f7d7f5e76c0e [2023-11-19 05:18:34,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:18:34,322 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:18:34,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:34,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:18:34,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:18:34,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:34" (1/1) ... [2023-11-19 05:18:34,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a45709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:34, skipping insertion in model container [2023-11-19 05:18:34,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:18:34" (1/1) ... [2023-11-19 05:18:34,427 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:35,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:35,176 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:18:35,189 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:18:35,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:35,303 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:18:35,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:18:35,453 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:18:35,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35 WrapperNode [2023-11-19 05:18:35,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:18:35,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:35,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:18:35,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:18:35,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,579 INFO L138 Inliner]: procedures = 180, calls = 238, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 786 [2023-11-19 05:18:35,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:18:35,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:18:35,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:18:35,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:18:35,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,679 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,696 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:18:35,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:18:35,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:18:35,706 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:18:35,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (1/1) ... [2023-11-19 05:18:35,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:18:35,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:35,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:18:35,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:18:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-19 05:18:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:18:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 05:18:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 05:18:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:18:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:18:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:18:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:18:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:18:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:18:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:18:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:18:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:18:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:18:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:18:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:18:36,019 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:18:36,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:18:43,806 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:18:43,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:18:43,826 INFO L302 CfgBuilder]: Removed 40 assume(true) statements. [2023-11-19 05:18:43,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:43 BoogieIcfgContainer [2023-11-19 05:18:43,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:18:43,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:18:43,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:18:43,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:18:43,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:18:34" (1/3) ... [2023-11-19 05:18:43,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3372e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:43, skipping insertion in model container [2023-11-19 05:18:43,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:18:35" (2/3) ... [2023-11-19 05:18:43,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3372e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:18:43, skipping insertion in model container [2023-11-19 05:18:43,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:18:43" (3/3) ... [2023-11-19 05:18:43,847 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2023-11-19 05:18:43,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:18:43,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:18:43,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:18:43,933 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;@4b4b20c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:18:43,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:18:43,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 146 states have (on average 1.6506849315068493) internal successors, (241), 158 states have internal predecessors, (241), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:18:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:18:43,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:43,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:43,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:18:43,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash -664136903, now seen corresponding path program 1 times [2023-11-19 05:18:43,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:43,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089811679] [2023-11-19 05:18:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:43,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:43,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:43,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:18:43,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:18:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:44,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:18:44,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:44,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:44,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:44,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089811679] [2023-11-19 05:18:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089811679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:44,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:44,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:44,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594916887] [2023-11-19 05:18:44,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:44,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:44,225 INFO L87 Difference]: Start difference. First operand has 164 states, 146 states have (on average 1.6506849315068493) internal successors, (241), 158 states have internal predecessors, (241), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:44,522 INFO L93 Difference]: Finished difference Result 252 states and 335 transitions. [2023-11-19 05:18:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-19 05:18:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:44,537 INFO L225 Difference]: With dead ends: 252 [2023-11-19 05:18:44,537 INFO L226 Difference]: Without dead ends: 250 [2023-11-19 05:18:44,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:44,542 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 108 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:44,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 431 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:18:44,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-19 05:18:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 162. [2023-11-19 05:18:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 156 states have internal predecessors, (193), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:18:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 219 transitions. [2023-11-19 05:18:44,600 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 219 transitions. Word has length 11 [2023-11-19 05:18:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:44,601 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 219 transitions. [2023-11-19 05:18:44,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:44,601 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 219 transitions. [2023-11-19 05:18:44,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:18:44,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:44,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:44,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:44,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:44,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:18:44,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:44,809 INFO L85 PathProgramCache]: Analyzing trace with hash 586545796, now seen corresponding path program 1 times [2023-11-19 05:18:44,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:44,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998005377] [2023-11-19 05:18:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:44,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:44,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:44,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:18:44,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:18:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:45,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:45,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:45,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:45,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:45,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998005377] [2023-11-19 05:18:45,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998005377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:45,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:45,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:18:45,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16663019] [2023-11-19 05:18:45,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:45,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:45,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:45,345 INFO L87 Difference]: Start difference. First operand 162 states and 219 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:45,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:45,500 INFO L93 Difference]: Finished difference Result 166 states and 215 transitions. [2023-11-19 05:18:45,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:45,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 66 [2023-11-19 05:18:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:45,502 INFO L225 Difference]: With dead ends: 166 [2023-11-19 05:18:45,503 INFO L226 Difference]: Without dead ends: 166 [2023-11-19 05:18:45,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:18:45,504 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 36 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:45,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 541 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:18:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-19 05:18:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2023-11-19 05:18:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 148 states have (on average 1.2702702702702702) internal successors, (188), 159 states have internal predecessors, (188), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:18:45,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 214 transitions. [2023-11-19 05:18:45,521 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 214 transitions. Word has length 66 [2023-11-19 05:18:45,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:45,521 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 214 transitions. [2023-11-19 05:18:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 214 transitions. [2023-11-19 05:18:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 05:18:45,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:45,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:18:45,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-19 05:18:45,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:45,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:18:45,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1454761096, now seen corresponding path program 1 times [2023-11-19 05:18:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181944438] [2023-11-19 05:18:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:45,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:45,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:18:45,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 05:18:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:46,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:46,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:46,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:46,598 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:46,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181944438] [2023-11-19 05:18:46,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181944438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:46,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:18:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229144084] [2023-11-19 05:18:46,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:46,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:18:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:18:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:46,602 INFO L87 Difference]: Start difference. First operand 165 states and 214 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:47,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:47,556 INFO L93 Difference]: Finished difference Result 238 states and 300 transitions. [2023-11-19 05:18:47,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:18:47,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 66 [2023-11-19 05:18:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:47,563 INFO L225 Difference]: With dead ends: 238 [2023-11-19 05:18:47,564 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 05:18:47,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:18:47,565 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 49 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:47,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 376 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:18:47,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 05:18:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 207. [2023-11-19 05:18:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 190 states have (on average 1.231578947368421) internal successors, (234), 201 states have internal predecessors, (234), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 05:18:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 260 transitions. [2023-11-19 05:18:47,582 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 260 transitions. Word has length 66 [2023-11-19 05:18:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:47,583 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 260 transitions. [2023-11-19 05:18:47,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:18:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 260 transitions. [2023-11-19 05:18:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 05:18:47,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:47,587 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] [2023-11-19 05:18:47,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-19 05:18:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:47,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:18:47,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -921436779, now seen corresponding path program 1 times [2023-11-19 05:18:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357782224] [2023-11-19 05:18:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:47,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:47,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:47,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:18:47,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-19 05:18:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:48,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:48,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:18:48,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:18:48,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:48,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357782224] [2023-11-19 05:18:48,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357782224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:18:48,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:18:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:18:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080677979] [2023-11-19 05:18:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:18:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:18:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:18:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:18:48,352 INFO L87 Difference]: Start difference. First operand 207 states and 260 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:18:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:48,419 INFO L93 Difference]: Finished difference Result 210 states and 264 transitions. [2023-11-19 05:18:48,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:18:48,421 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2023-11-19 05:18:48,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:48,423 INFO L225 Difference]: With dead ends: 210 [2023-11-19 05:18:48,424 INFO L226 Difference]: Without dead ends: 210 [2023-11-19 05:18:48,424 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 [2023-11-19 05:18:48,426 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 2 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:48,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 608 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:18:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-19 05:18:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2023-11-19 05:18:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 192 states have (on average 1.234375) internal successors, (237), 204 states have internal predecessors, (237), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2023-11-19 05:18:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 264 transitions. [2023-11-19 05:18:48,443 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 264 transitions. Word has length 81 [2023-11-19 05:18:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:48,444 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 264 transitions. [2023-11-19 05:18:48,444 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:18:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 264 transitions. [2023-11-19 05:18:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 05:18:48,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:48,447 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] [2023-11-19 05:18:48,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:48,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:48,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:18:48,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:48,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1569490291, now seen corresponding path program 1 times [2023-11-19 05:18:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:48,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685733049] [2023-11-19 05:18:48,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:48,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:48,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:48,661 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:18:48,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 05:18:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:49,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:18:49,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:49,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:18:49,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:18:49,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685733049] [2023-11-19 05:18:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685733049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150167582] [2023-11-19 05:18:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:49,558 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:18:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:18:49,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:18:49,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-11-19 05:18:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:50,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:18:50,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:18:50,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:18:50,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1150167582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:50,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779021618] [2023-11-19 05:18:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:50,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:50,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:50,544 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:18:50,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 05:18:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:51,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:18:51,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:18:51,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:51,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 05:18:51,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779021618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:51,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:18:51,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2023-11-19 05:18:51,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393192694] [2023-11-19 05:18:51,811 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:18:51,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 05:18:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:18:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 05:18:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 05:18:51,816 INFO L87 Difference]: Start difference. First operand 210 states and 264 transitions. Second operand has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:18:53,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:18:53,381 INFO L93 Difference]: Finished difference Result 453 states and 567 transitions. [2023-11-19 05:18:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:18:53,382 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 83 [2023-11-19 05:18:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:18:53,386 INFO L225 Difference]: With dead ends: 453 [2023-11-19 05:18:53,386 INFO L226 Difference]: Without dead ends: 453 [2023-11-19 05:18:53,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:18:53,388 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 419 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:18:53,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1786 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 05:18:53,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-19 05:18:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 451. [2023-11-19 05:18:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 423 states have (on average 1.215130023640662) internal successors, (514), 435 states have internal predecessors, (514), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2023-11-19 05:18:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 562 transitions. [2023-11-19 05:18:53,432 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 562 transitions. Word has length 83 [2023-11-19 05:18:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:18:53,434 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 562 transitions. [2023-11-19 05:18:53,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.5) internal successors, (210), 12 states have internal predecessors, (210), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 05:18:53,434 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 562 transitions. [2023-11-19 05:18:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-19 05:18:53,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:18:53,444 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 05:18:53,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:53,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:53,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 05:18:54,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:54,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:18:54,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:18:54,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1481405380, now seen corresponding path program 1 times [2023-11-19 05:18:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:18:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680852217] [2023-11-19 05:18:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:54,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:18:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:18:54,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:18:54,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 05:18:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:55,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:18:55,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-19 05:18:55,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:18:56,264 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:18:56,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680852217] [2023-11-19 05:18:56,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680852217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:56,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1578037847] [2023-11-19 05:18:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:56,266 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:18:56,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:18:56,267 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:18:56,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-19 05:18:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:18:58,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:18:58,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:18:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-19 05:18:58,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:18:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 112 proven. 27 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 05:18:58,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1578037847] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:18:58,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779423887] [2023-11-19 05:18:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:18:58,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:18:58,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:18:58,875 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:18:58,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 05:19:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:19:00,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:19:00,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-19 05:19:00,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:00,729 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 129 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-19 05:19:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779423887] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:00,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:19:00,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2023-11-19 05:19:00,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646840278] [2023-11-19 05:19:00,731 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:00,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 05:19:00,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 05:19:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:19:00,736 INFO L87 Difference]: Start difference. First operand 451 states and 562 transitions. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:19:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:19:02,616 INFO L93 Difference]: Finished difference Result 477 states and 609 transitions. [2023-11-19 05:19:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 05:19:02,618 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 252 [2023-11-19 05:19:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:19:02,623 INFO L225 Difference]: With dead ends: 477 [2023-11-19 05:19:02,623 INFO L226 Difference]: Without dead ends: 471 [2023-11-19 05:19:02,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 05:19:02,627 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 43 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:19:02,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2413 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:19:02,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2023-11-19 05:19:02,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 463. [2023-11-19 05:19:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 435 states have (on average 1.2183908045977012) internal successors, (530), 447 states have internal predecessors, (530), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 13 states have call predecessors, (26), 22 states have call successors, (26) [2023-11-19 05:19:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 578 transitions. [2023-11-19 05:19:02,653 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 578 transitions. Word has length 252 [2023-11-19 05:19:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:19:02,653 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 578 transitions. [2023-11-19 05:19:02,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 states have internal predecessors, (141), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-19 05:19:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 578 transitions. [2023-11-19 05:19:02,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-11-19 05:19:02,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:19:02,661 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-19 05:19:02,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:02,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:03,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:19:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:03,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-19 05:19:03,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:19:03,279 INFO L85 PathProgramCache]: Analyzing trace with hash 721907196, now seen corresponding path program 2 times [2023-11-19 05:19:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:19:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618231901] [2023-11-19 05:19:03,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:19:03,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:19:03,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:19:03,282 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:19:03,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-19 05:19:04,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:19:04,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:04,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:19:04,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-19 05:19:05,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 05:19:06,362 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:19:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618231901] [2023-11-19 05:19:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618231901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:06,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2100106779] [2023-11-19 05:19:06,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:19:06,363 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 05:19:06,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 05:19:06,370 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 05:19:06,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-19 05:19:09,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:19:09,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:09,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:19:09,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 214 proven. 55 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-19 05:19:09,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 112 proven. 156 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-19 05:19:09,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2100106779] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:09,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836231240] [2023-11-19 05:19:09,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 05:19:09,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:19:09,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:19:09,678 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:19:09,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e234ca-a199-4c88-8c42-55cd4061f8a2/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 05:19:11,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 05:19:11,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:19:11,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 05:19:11,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:19:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-19 05:19:12,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:19:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-19 05:19:14,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836231240] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:19:14,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 05:19:14,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2023-11-19 05:19:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995635843] [2023-11-19 05:19:14,667 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 05:19:14,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-19 05:19:14,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:19:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-19 05:19:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 05:19:14,673 INFO L87 Difference]: Start difference. First operand 463 states and 578 transitions. Second operand has 36 states, 36 states have (on average 16.583333333333332) internal successors, (597), 36 states have internal predecessors, (597), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8)