./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:29:20,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:29:21,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:29:21,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:29:21,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:29:21,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:29:21,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:29:21,159 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:29:21,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:29:21,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:29:21,166 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:29:21,167 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:29:21,168 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:29:21,169 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:29:21,170 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:29:21,170 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:29:21,170 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:29:21,171 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:29:21,171 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:29:21,172 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:29:21,172 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:29:21,173 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:29:21,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:29:21,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:29:21,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:29:21,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:29:21,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:29:21,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:29:21,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:29:21,177 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:29:21,178 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:29:21,178 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:29:21,178 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:29:21,179 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:29:21,179 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:29:21,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:29:21,179 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:29:21,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:29:21,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:29:21,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:21,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:29:21,181 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:29:21,181 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:29:21,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:29:21,181 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:29:21,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:29:21,182 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_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 [2023-11-06 20:29:21,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:29:21,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:29:21,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:29:21,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:29:21,449 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:29:21,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2023-11-06 20:29:24,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:29:24,905 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:29:24,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2023-11-06 20:29:24,935 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data/dd0508e14/720b8c5b578342d0b2e125fed3b235ff/FLAG573f86d8a [2023-11-06 20:29:24,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data/dd0508e14/720b8c5b578342d0b2e125fed3b235ff [2023-11-06 20:29:24,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:29:24,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:29:24,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:24,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:29:24,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:29:24,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:24" (1/1) ... [2023-11-06 20:29:24,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d099b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:24, skipping insertion in model container [2023-11-06 20:29:24,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:24" (1/1) ... [2023-11-06 20:29:25,071 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:29:25,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:25,765 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) [2023-11-06 20:29:25,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1419221d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:25, skipping insertion in model container [2023-11-06 20:29:25,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:25,766 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:29:25,768 INFO L158 Benchmark]: Toolchain (without parser) took 804.83ms. Allocated memory is still 165.7MB. Free memory was 133.8MB in the beginning and 112.9MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:29:25,769 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:29:25,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 799.84ms. Allocated memory is still 165.7MB. Free memory was 133.4MB in the beginning and 112.9MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 20:29:25,771 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 799.84ms. Allocated memory is still 165.7MB. Free memory was 133.4MB in the beginning and 112.9MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:29:28,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:29:28,482 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:29:28,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:29:28,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:29:28,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:29:28,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:29:28,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:29:28,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:29:28,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:29:28,550 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:29:28,550 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:29:28,551 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:29:28,553 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:29:28,553 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:29:28,553 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:29:28,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:29:28,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:29:28,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:29:28,557 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:29:28,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:29:28,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:29:28,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:29:28,559 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:29:28,560 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:29:28,560 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:29:28,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:29:28,561 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:29:28,561 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:29:28,562 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:29:28,563 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:29:28,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:29:28,564 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:29:28,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:29:28,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:29:28,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:29:28,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:28,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:29:28,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:29:28,567 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:29:28,567 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:29:28,567 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:29:28,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:29:28,568 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_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 096e364e485b0e5279ae2fe39d9edab416c1da593e20bd1edd3d0a079c23fdc3 [2023-11-06 20:29:29,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:29:29,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:29:29,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:29:29,052 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:29:29,053 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:29:29,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2023-11-06 20:29:32,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:29:32,581 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:29:32,582 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test3-2.i [2023-11-06 20:29:32,607 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data/9697856ae/1b6d4c3f8bb8419d85232b4bc2d55a79/FLAGf45c69945 [2023-11-06 20:29:32,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/data/9697856ae/1b6d4c3f8bb8419d85232b4bc2d55a79 [2023-11-06 20:29:32,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:29:32,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:29:32,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:32,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:29:32,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:29:32,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:32" (1/1) ... [2023-11-06 20:29:32,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3bbb7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:32, skipping insertion in model container [2023-11-06 20:29:32,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:29:32" (1/1) ... [2023-11-06 20:29:32,755 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:29:33,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:33,586 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:29:33,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:29:33,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:33,711 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:29:33,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:29:33,862 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 20:29:33,899 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:29:33,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33 WrapperNode [2023-11-06 20:29:33,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:29:33,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:29:33,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:29:33,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:29:33,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:33,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,039 INFO L138 Inliner]: procedures = 180, calls = 338, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1214 [2023-11-06 20:29:34,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:29:34,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:29:34,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:29:34,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:29:34,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:29:34,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:29:34,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:29:34,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:29:34,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (1/1) ... [2023-11-06 20:29:34,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:29:34,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:29:34,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:29:34,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:29:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-06 20:29:34,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-06 20:29:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 20:29:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:29:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 20:29:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 20:29:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 20:29:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 20:29:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:29:34,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:29:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:29:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:29:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-06 20:29:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:29:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:29:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:29:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:29:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:29:34,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:29:34,586 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:29:34,588 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:29:34,631 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:29:40,642 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:29:40,658 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:29:40,658 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-06 20:29:40,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:29:40 BoogieIcfgContainer [2023-11-06 20:29:40,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:29:40,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:29:40,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:29:40,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:29:40,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:29:32" (1/3) ... [2023-11-06 20:29:40,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d0014f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:29:40, skipping insertion in model container [2023-11-06 20:29:40,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:29:33" (2/3) ... [2023-11-06 20:29:40,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d0014f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:29:40, skipping insertion in model container [2023-11-06 20:29:40,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:29:40" (3/3) ... [2023-11-06 20:29:40,671 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test3-2.i [2023-11-06 20:29:40,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:29:40,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 638 error locations. [2023-11-06 20:29:40,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:29:40,766 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;@8af66c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:29:40,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 638 error locations. [2023-11-06 20:29:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 1284 states, 635 states have (on average 2.234645669291339) internal successors, (1419), 1277 states have internal predecessors, (1419), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-06 20:29:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:29:40,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:40,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:29:40,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-11-06 20:29:40,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-06 20:29:40,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:40,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225196780] [2023-11-06 20:29:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:40,810 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 [2023-11-06 20:29:40,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:40,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:29:40,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:29:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:41,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:29:41,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:41,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 20:29:41,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:41,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:41,107 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:41,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225196780] [2023-11-06 20:29:41,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225196780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:41,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:41,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:29:41,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314321650] [2023-11-06 20:29:41,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:41,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:29:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:29:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:41,150 INFO L87 Difference]: Start difference. First operand has 1284 states, 635 states have (on average 2.234645669291339) internal successors, (1419), 1277 states have internal predecessors, (1419), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 20:29:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:44,123 INFO L93 Difference]: Finished difference Result 1460 states and 1545 transitions. [2023-11-06 20:29:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:29:44,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 20:29:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:44,150 INFO L225 Difference]: With dead ends: 1460 [2023-11-06 20:29:44,150 INFO L226 Difference]: Without dead ends: 1458 [2023-11-06 20:29:44,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:44,155 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1189 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:44,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 949 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 20:29:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2023-11-06 20:29:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1270. [2023-11-06 20:29:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 637 states have (on average 2.086342229199372) internal successors, (1329), 1263 states have internal predecessors, (1329), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 20:29:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1347 transitions. [2023-11-06 20:29:44,304 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1347 transitions. Word has length 3 [2023-11-06 20:29:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:44,304 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 1347 transitions. [2023-11-06 20:29:44,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 20:29:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1347 transitions. [2023-11-06 20:29:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-06 20:29:44,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:44,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-06 20:29:44,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:29:44,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:29:44,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-11-06 20:29:44,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-06 20:29:44,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:44,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694317585] [2023-11-06 20:29:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:44,517 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 [2023-11-06 20:29:44,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:44,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:29:44,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:29:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:44,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:29:44,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:44,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 20:29:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:44,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:44,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:44,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694317585] [2023-11-06 20:29:44,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694317585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:44,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:44,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:29:44,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151069968] [2023-11-06 20:29:44,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:44,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:29:44,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:44,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:29:44,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:44,719 INFO L87 Difference]: Start difference. First operand 1270 states and 1347 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 20:29:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:29:49,585 INFO L93 Difference]: Finished difference Result 1885 states and 2014 transitions. [2023-11-06 20:29:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:29:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-06 20:29:49,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:29:49,597 INFO L225 Difference]: With dead ends: 1885 [2023-11-06 20:29:49,597 INFO L226 Difference]: Without dead ends: 1885 [2023-11-06 20:29:49,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:29:49,599 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 656 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 20:29:49,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1767 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 20:29:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1885 states. [2023-11-06 20:29:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1885 to 1475. [2023-11-06 20:29:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 843 states have (on average 2.0711743772241995) internal successors, (1746), 1468 states have internal predecessors, (1746), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 20:29:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 1764 transitions. [2023-11-06 20:29:49,650 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 1764 transitions. Word has length 3 [2023-11-06 20:29:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:29:49,650 INFO L495 AbstractCegarLoop]: Abstraction has 1475 states and 1764 transitions. [2023-11-06 20:29:49,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-06 20:29:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 1764 transitions. [2023-11-06 20:29:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 20:29:49,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:29:49,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 20:29:49,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 20:29:49,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:29:49,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 635 more)] === [2023-11-06 20:29:49,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:29:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-06 20:29:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:29:49,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137916954] [2023-11-06 20:29:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:29:49,865 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 [2023-11-06 20:29:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:29:49,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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) [2023-11-06 20:29:49,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e372e21-6925-4989-889d-78b3379fb7fa/bin/utaipan-verify-FOvIYxoinp/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 [2023-11-06 20:29:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:29:50,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 20:29:50,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:29:50,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 20:29:50,129 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 20:29:50,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 20:29:50,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 20:29:50,263 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 20:29:50,265 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 20:29:50,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:29:50,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:29:50,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:29:50,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137916954] [2023-11-06 20:29:50,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137916954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:29:50,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:29:50,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 20:29:50,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998735429] [2023-11-06 20:29:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:29:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 20:29:50,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:29:50,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 20:29:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 20:29:50,296 INFO L87 Difference]: Start difference. First operand 1475 states and 1764 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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)