./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:04:34,730 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:04:34,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-25 00:04:34,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:04:34,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:04:34,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:04:34,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:04:34,844 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:04:34,845 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:04:34,845 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:04:34,846 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:04:34,846 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:04:34,847 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:04:34,847 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:04:34,848 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:04:34,848 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:04:34,849 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:04:34,849 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:04:34,850 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:04:34,850 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:04:34,850 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:04:34,851 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:04:34,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:04:34,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:04:34,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:04:34,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:04:34,854 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:04:34,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:04:34,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:04:34,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:04:34,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:04:34,855 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:04:34,856 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:04:34,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:04:34,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:04:34,857 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:04:34,857 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:04:34,857 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:04:34,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:04:34,857 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:04:34,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:04:34,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:04:34,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:04:34,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:34,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:04:34,859 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:04:34,859 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:04:34,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:04:34,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:04:34,860 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:04:34,860 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:04:34,860 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_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2023-11-25 00:04:35,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:04:35,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:04:35,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:04:35,175 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:04:35,176 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:04:35,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2023-11-25 00:04:38,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:04:39,504 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:04:39,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2023-11-25 00:04:39,530 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data/c94f60000/d0a71e52d6c64926940ead738cf75661/FLAG44be080c6 [2023-11-25 00:04:39,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data/c94f60000/d0a71e52d6c64926940ead738cf75661 [2023-11-25 00:04:39,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:04:39,555 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:04:39,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:39,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:04:39,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:04:39,567 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:39" (1/1) ... [2023-11-25 00:04:39,568 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3654cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:39, skipping insertion in model container [2023-11-25 00:04:39,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:39" (1/1) ... [2023-11-25 00:04:39,687 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:40,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:40,839 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) [2023-11-25 00:04:40,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@876ef5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:40, skipping insertion in model container [2023-11-25 00:04:40,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:40,840 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-25 00:04:40,843 INFO L158 Benchmark]: Toolchain (without parser) took 1286.31ms. Allocated memory is still 161.5MB. Free memory was 115.3MB in the beginning and 91.0MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-25 00:04:40,844 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory was 75.3MB in the beginning and 75.3MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:04:40,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1282.84ms. Allocated memory is still 161.5MB. Free memory was 114.9MB in the beginning and 91.0MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-25 00:04:40,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 107.0MB. Free memory was 75.3MB in the beginning and 75.3MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1282.84ms. Allocated memory is still 161.5MB. Free memory was 114.9MB in the beginning and 91.0MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:04:43,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:04:44,043 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-25 00:04:44,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:04:44,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:04:44,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:04:44,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:04:44,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:04:44,155 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:04:44,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:04:44,163 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:04:44,163 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:04:44,164 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:04:44,167 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:04:44,167 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:04:44,168 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:04:44,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:04:44,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:04:44,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:04:44,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:04:44,173 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:04:44,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:04:44,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:04:44,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:04:44,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:04:44,176 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:04:44,177 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:04:44,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:04:44,178 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:04:44,179 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:04:44,181 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:04:44,181 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:04:44,182 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:04:44,182 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:04:44,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:04:44,183 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:04:44,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:04:44,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:04:44,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:04:44,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:04:44,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:44,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:04:44,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:04:44,187 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:04:44,188 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:04:44,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:04:44,189 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:04:44,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:04:44,189 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_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85752dfa9e642a242de1661b045d725551498d8fafaaba42a5d915ccb8e5b948 [2023-11-25 00:04:44,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:04:44,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:04:44,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:04:44,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:04:44,789 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:04:44,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2023-11-25 00:04:48,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:04:49,320 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:04:49,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-3.i [2023-11-25 00:04:49,360 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data/f3dd9901b/5947a9ef057c4fc4bd1fa74c450dc3e3/FLAG25b8e2ff3 [2023-11-25 00:04:49,390 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/data/f3dd9901b/5947a9ef057c4fc4bd1fa74c450dc3e3 [2023-11-25 00:04:49,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:04:49,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:04:49,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:49,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:04:49,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:04:49,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:49" (1/1) ... [2023-11-25 00:04:49,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756dbede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:49, skipping insertion in model container [2023-11-25 00:04:49,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:04:49" (1/1) ... [2023-11-25 00:04:49,518 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:50,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:50,649 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-25 00:04:50,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:04:50,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:50,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:04:51,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:04:51,127 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:04:51,136 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:04:51,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51 WrapperNode [2023-11-25 00:04:51,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:04:51,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:51,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:04:51,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:04:51,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,396 INFO L138 Inliner]: procedures = 180, calls = 489, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1705 [2023-11-25 00:04:51,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:04:51,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:04:51,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:04:51,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:04:51,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:04:51,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:04:51,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:04:51,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:04:51,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (1/1) ... [2023-11-25 00:04:51,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:04:51,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:04:51,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:04:51,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:04:51,745 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-25 00:04:51,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-25 00:04:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-25 00:04:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-25 00:04:51,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:04:51,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:04:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:04:51,749 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:04:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:04:51,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:04:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:04:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:04:51,750 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-25 00:04:51,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:04:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:04:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-25 00:04:51,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:04:51,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:04:51,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:04:52,186 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:04:52,191 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:06,555 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:06,623 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:06,624 INFO L309 CfgBuilder]: Removed 100 assume(true) statements. [2023-11-25 00:05:06,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:06 BoogieIcfgContainer [2023-11-25 00:05:06,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:06,627 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:06,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:06,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:06,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:04:49" (1/3) ... [2023-11-25 00:05:06,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e120c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:06, skipping insertion in model container [2023-11-25 00:05:06,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:04:51" (2/3) ... [2023-11-25 00:05:06,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e120c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:06, skipping insertion in model container [2023-11-25 00:05:06,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:06" (3/3) ... [2023-11-25 00:05:06,635 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-3.i [2023-11-25 00:05:06,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:06,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:05:06,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:06,735 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;@7bb20f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:06,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:05:06,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 318 states, 299 states have (on average 1.6822742474916388) internal successors, (503), 308 states have internal predecessors, (503), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:05:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:05:06,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:06,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:06,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:06,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:06,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1452692516, now seen corresponding path program 1 times [2023-11-25 00:05:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:06,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415028537] [2023-11-25 00:05:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:06,778 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 [2023-11-25 00:05:06,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:06,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:06,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-25 00:05:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:07,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:05:07,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:07,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:07,064 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:07,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415028537] [2023-11-25 00:05:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415028537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:07,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:07,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:07,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268847732] [2023-11-25 00:05:07,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:07,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:05:07,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:07,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:05:07,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:07,106 INFO L87 Difference]: Start difference. First operand has 318 states, 299 states have (on average 1.6822742474916388) internal successors, (503), 308 states have internal predecessors, (503), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-25 00:05:07,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:07,168 INFO L93 Difference]: Finished difference Result 316 states and 417 transitions. [2023-11-25 00:05:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:05:07,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2023-11-25 00:05:07,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:07,196 INFO L225 Difference]: With dead ends: 316 [2023-11-25 00:05:07,197 INFO L226 Difference]: Without dead ends: 315 [2023-11-25 00:05:07,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:07,203 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:07,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-25 00:05:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-25 00:05:07,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2023-11-25 00:05:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 298 states have (on average 1.3154362416107384) internal successors, (392), 305 states have internal predecessors, (392), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-25 00:05:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2023-11-25 00:05:07,289 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 416 transitions. Word has length 9 [2023-11-25 00:05:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:07,291 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 416 transitions. [2023-11-25 00:05:07,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-25 00:05:07,291 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 416 transitions. [2023-11-25 00:05:07,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:05:07,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:07,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:07,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:07,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:07,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:07,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1201787036, now seen corresponding path program 1 times [2023-11-25 00:05:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:07,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409279257] [2023-11-25 00:05:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:07,498 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 [2023-11-25 00:05:07,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:07,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:07,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-25 00:05:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:07,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:05:07,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:07,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:07,738 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:07,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409279257] [2023-11-25 00:05:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409279257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522681182] [2023-11-25 00:05:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:07,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:07,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:07,743 INFO L87 Difference]: Start difference. First operand 315 states and 416 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:08,088 INFO L93 Difference]: Finished difference Result 561 states and 744 transitions. [2023-11-25 00:05:08,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:08,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:05:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:08,093 INFO L225 Difference]: With dead ends: 561 [2023-11-25 00:05:08,094 INFO L226 Difference]: Without dead ends: 561 [2023-11-25 00:05:08,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:08,096 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 303 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:08,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 840 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:05:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2023-11-25 00:05:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 317. [2023-11-25 00:05:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 300 states have (on average 1.3133333333333332) internal successors, (394), 307 states have internal predecessors, (394), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-25 00:05:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 418 transitions. [2023-11-25 00:05:08,125 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 418 transitions. Word has length 10 [2023-11-25 00:05:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:08,125 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 418 transitions. [2023-11-25 00:05:08,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 418 transitions. [2023-11-25 00:05:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-25 00:05:08,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:08,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:08,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-25 00:05:08,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:08,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:08,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:08,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1178639054, now seen corresponding path program 1 times [2023-11-25 00:05:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:08,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952308252] [2023-11-25 00:05:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:08,344 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 [2023-11-25 00:05:08,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:08,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:08,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-25 00:05:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:09,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:09,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:09,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:09,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:09,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952308252] [2023-11-25 00:05:09,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952308252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:09,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:05:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723935800] [2023-11-25 00:05:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:05:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:05:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:05:09,192 INFO L87 Difference]: Start difference. First operand 317 states and 418 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:09,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:09,370 INFO L93 Difference]: Finished difference Result 321 states and 414 transitions. [2023-11-25 00:05:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:05:09,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-25 00:05:09,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:09,374 INFO L225 Difference]: With dead ends: 321 [2023-11-25 00:05:09,374 INFO L226 Difference]: Without dead ends: 321 [2023-11-25 00:05:09,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:05:09,376 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 36 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:09,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1125 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:05:09,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-25 00:05:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-11-25 00:05:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 303 states have (on average 1.283828382838284) internal successors, (389), 310 states have internal predecessors, (389), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-25 00:05:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 413 transitions. [2023-11-25 00:05:09,391 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 413 transitions. Word has length 151 [2023-11-25 00:05:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:09,392 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 413 transitions. [2023-11-25 00:05:09,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:09,393 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 413 transitions. [2023-11-25 00:05:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-25 00:05:09,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:09,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:09,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:09,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:09,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:09,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1740524222, now seen corresponding path program 1 times [2023-11-25 00:05:09,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:09,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961010583] [2023-11-25 00:05:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:09,616 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 [2023-11-25 00:05:09,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:09,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:09,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-25 00:05:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:10,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:10,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:10,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:10,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961010583] [2023-11-25 00:05:10,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961010583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:10,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:10,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:10,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314846850] [2023-11-25 00:05:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:10,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:10,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:10,730 INFO L87 Difference]: Start difference. First operand 320 states and 413 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:11,391 INFO L93 Difference]: Finished difference Result 415 states and 529 transitions. [2023-11-25 00:05:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:11,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-11-25 00:05:11,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:11,403 INFO L225 Difference]: With dead ends: 415 [2023-11-25 00:05:11,404 INFO L226 Difference]: Without dead ends: 415 [2023-11-25 00:05:11,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:11,405 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 79 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:11,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 797 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-25 00:05:11,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-25 00:05:11,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 362. [2023-11-25 00:05:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 345 states have (on average 1.2608695652173914) internal successors, (435), 352 states have internal predecessors, (435), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-25 00:05:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 459 transitions. [2023-11-25 00:05:11,423 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 459 transitions. Word has length 151 [2023-11-25 00:05:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:11,425 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 459 transitions. [2023-11-25 00:05:11,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:11,426 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 459 transitions. [2023-11-25 00:05:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-25 00:05:11,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:11,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:11,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-25 00:05:11,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:11,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:11,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:11,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1105018770, now seen corresponding path program 1 times [2023-11-25 00:05:11,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:11,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507174425] [2023-11-25 00:05:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:11,652 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 [2023-11-25 00:05:11,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:11,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:11,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-25 00:05:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:12,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:12,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:12,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:12,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:12,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507174425] [2023-11-25 00:05:12,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507174425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:12,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:12,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:05:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338697445] [2023-11-25 00:05:12,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:12,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:05:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:05:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:05:12,670 INFO L87 Difference]: Start difference. First operand 362 states and 459 transitions. Second operand has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:05:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:12,775 INFO L93 Difference]: Finished difference Result 364 states and 463 transitions. [2023-11-25 00:05:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:05:12,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 164 [2023-11-25 00:05:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:12,779 INFO L225 Difference]: With dead ends: 364 [2023-11-25 00:05:12,779 INFO L226 Difference]: Without dead ends: 364 [2023-11-25 00:05:12,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:05:12,780 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1187 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:05:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-25 00:05:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2023-11-25 00:05:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 346 states have (on average 1.2630057803468209) internal successors, (437), 354 states have internal predecessors, (437), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-25 00:05:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 463 transitions. [2023-11-25 00:05:12,794 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 463 transitions. Word has length 164 [2023-11-25 00:05:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:12,794 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 463 transitions. [2023-11-25 00:05:12,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 53.0) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-25 00:05:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 463 transitions. [2023-11-25 00:05:12,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-25 00:05:12,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:12,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:12,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:13,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:13,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:13,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:13,012 INFO L85 PathProgramCache]: Analyzing trace with hash -980723662, now seen corresponding path program 1 times [2023-11-25 00:05:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682684396] [2023-11-25 00:05:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:13,014 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 [2023-11-25 00:05:13,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:13,015 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:13,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-25 00:05:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:14,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:05:14,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:05:14,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:05:14,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:14,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [682684396] [2023-11-25 00:05:14,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [682684396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:14,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [520406625] [2023-11-25 00:05:14,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:14,204 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:05:14,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:05:14,211 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:05:14,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-25 00:05:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:15,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-25 00:05:15,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:05:15,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [520406625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:15,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:05:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-25 00:05:15,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880671925] [2023-11-25 00:05:15,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:15,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:15,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:15,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:15,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:15,306 INFO L87 Difference]: Start difference. First operand 364 states and 463 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:05:15,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:15,466 INFO L93 Difference]: Finished difference Result 385 states and 484 transitions. [2023-11-25 00:05:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:15,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-11-25 00:05:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:15,471 INFO L225 Difference]: With dead ends: 385 [2023-11-25 00:05:15,471 INFO L226 Difference]: Without dead ends: 385 [2023-11-25 00:05:15,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:15,472 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 8 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:15,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 748 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:05:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-25 00:05:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2023-11-25 00:05:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 366 states have (on average 1.2486338797814207) internal successors, (457), 374 states have internal predecessors, (457), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-25 00:05:15,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 483 transitions. [2023-11-25 00:05:15,487 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 483 transitions. Word has length 166 [2023-11-25 00:05:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:15,488 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 483 transitions. [2023-11-25 00:05:15,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:05:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 483 transitions. [2023-11-25 00:05:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-25 00:05:15,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:15,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:15,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:15,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:15,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:15,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:15,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:15,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1889855826, now seen corresponding path program 1 times [2023-11-25 00:05:15,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911647048] [2023-11-25 00:05:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:15,900 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 [2023-11-25 00:05:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:15,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:15,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-25 00:05:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:16,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:05:16,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:05:16,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:05:16,987 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:16,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911647048] [2023-11-25 00:05:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911647048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:16,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [27708945] [2023-11-25 00:05:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:16,988 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:05:16,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:05:16,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:05:17,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-25 00:05:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:18,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:18,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-25 00:05:18,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:18,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [27708945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:18,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:05:18,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-25 00:05:18,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368730451] [2023-11-25 00:05:18,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:18,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:18,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:18,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:18,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:18,597 INFO L87 Difference]: Start difference. First operand 384 states and 483 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:05:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:19,793 INFO L93 Difference]: Finished difference Result 683 states and 868 transitions. [2023-11-25 00:05:19,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:19,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2023-11-25 00:05:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:19,799 INFO L225 Difference]: With dead ends: 683 [2023-11-25 00:05:19,799 INFO L226 Difference]: Without dead ends: 683 [2023-11-25 00:05:19,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:19,800 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 307 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:19,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 884 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-25 00:05:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2023-11-25 00:05:19,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 626. [2023-11-25 00:05:19,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 599 states have (on average 1.2470784641068446) internal successors, (747), 612 states have internal predecessors, (747), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2023-11-25 00:05:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 793 transitions. [2023-11-25 00:05:19,824 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 793 transitions. Word has length 166 [2023-11-25 00:05:19,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:19,824 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 793 transitions. [2023-11-25 00:05:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:05:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 793 transitions. [2023-11-25 00:05:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-25 00:05:19,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:19,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:19,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:20,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-11-25 00:05:20,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt [2023-11-25 00:05:20,241 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:20,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1642793464, now seen corresponding path program 1 times [2023-11-25 00:05:20,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:20,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84886756] [2023-11-25 00:05:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:20,242 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 [2023-11-25 00:05:20,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:20,244 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:20,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-25 00:05:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:21,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:05:21,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:05:21,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:05:21,374 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:21,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84886756] [2023-11-25 00:05:21,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84886756] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:21,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [92663552] [2023-11-25 00:05:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:21,375 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:05:21,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:05:21,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:05:21,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-25 00:05:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:22,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:22,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-25 00:05:23,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [92663552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:23,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-25 00:05:23,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2023-11-25 00:05:23,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240077767] [2023-11-25 00:05:23,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:23,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:23,835 INFO L87 Difference]: Start difference. First operand 626 states and 793 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:05:24,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:24,865 INFO L93 Difference]: Finished difference Result 823 states and 1046 transitions. [2023-11-25 00:05:24,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:24,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2023-11-25 00:05:24,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:24,880 INFO L225 Difference]: With dead ends: 823 [2023-11-25 00:05:24,880 INFO L226 Difference]: Without dead ends: 823 [2023-11-25 00:05:24,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-25 00:05:24,881 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 164 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:24,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 832 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-25 00:05:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2023-11-25 00:05:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 766. [2023-11-25 00:05:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 736 states have (on average 1.247282608695652) internal successors, (918), 749 states have internal predecessors, (918), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2023-11-25 00:05:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 971 transitions. [2023-11-25 00:05:24,910 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 971 transitions. Word has length 174 [2023-11-25 00:05:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:24,911 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 971 transitions. [2023-11-25 00:05:24,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-25 00:05:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 971 transitions. [2023-11-25 00:05:24,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-25 00:05:24,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:24,914 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:24,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:25,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:25,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:25,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-25 00:05:25,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash -208640395, now seen corresponding path program 1 times [2023-11-25 00:05:25,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:25,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127193297] [2023-11-25 00:05:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:25,325 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 [2023-11-25 00:05:25,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:25,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:25,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-25 00:05:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:26,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:05:26,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-25 00:05:26,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:05:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-25 00:05:26,616 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127193297] [2023-11-25 00:05:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127193297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:05:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1337311220] [2023-11-25 00:05:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:26,617 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-25 00:05:26,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-25 00:05:26,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-25 00:05:26,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58136494-3454-4b82-9b0b-0658460a5275/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process