./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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-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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:07:14,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:07:14,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-25 00:07:14,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:07:14,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:07:14,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:07:14,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:07:14,931 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:07:14,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:07:14,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:07:14,937 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:07:14,938 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:07:14,938 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:07:14,940 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:07:14,940 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:07:14,941 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:07:14,943 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:07:14,943 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:07:14,944 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:07:14,944 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:07:14,945 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:07:14,945 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:07:14,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:07:14,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:07:14,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:07:14,948 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:07:14,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:07:14,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:07:14,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:07:14,950 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:07:14,951 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:07:14,951 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-25 00:07:14,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:07:14,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:07:14,952 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:07:14,952 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:07:14,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:07:14,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:07:14,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:07:14,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:07:14,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:14,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:07:14,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:07:14,956 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:07:14,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:07:14,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:07:14,957 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:07:14,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:07:14,957 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_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2023-11-25 00:07:15,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:07:15,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:07:15,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:07:15,301 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:07:15,302 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:07:15,303 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-25 00:07:18,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:07:18,941 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:07:18,948 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-25 00:07:18,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data/0b68d2a3e/755d97bb7b3c46deb4e67338b542e521/FLAG45001f2c0 [2023-11-25 00:07:18,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data/0b68d2a3e/755d97bb7b3c46deb4e67338b542e521 [2023-11-25 00:07:19,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:07:19,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:07:19,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:19,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:07:19,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:07:19,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:18" (1/1) ... [2023-11-25 00:07:19,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c7abbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:19, skipping insertion in model container [2023-11-25 00:07:19,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:18" (1/1) ... [2023-11-25 00:07:19,120 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:07:19,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:19,891 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 00:07:19,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d6a5115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:19, skipping insertion in model container [2023-11-25 00:07:19,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:19,894 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-25 00:07:19,897 INFO L158 Benchmark]: Toolchain (without parser) took 889.18ms. Allocated memory is still 144.7MB. Free memory was 104.4MB in the beginning and 84.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-25 00:07:19,897 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:07:19,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 881.40ms. Allocated memory is still 144.7MB. Free memory was 104.4MB in the beginning and 84.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-25 00:07:19,901 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 881.40ms. Allocated memory is still 144.7MB. Free memory was 104.4MB in the beginning and 84.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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-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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:07:22,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:07:22,590 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-25 00:07:22,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:07:22,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:07:22,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:07:22,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:07:22,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:07:22,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:07:22,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:07:22,653 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:07:22,654 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:07:22,654 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:07:22,656 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:07:22,656 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:07:22,657 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:07:22,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:07:22,658 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:07:22,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:07:22,660 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:07:22,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:07:22,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:07:22,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:07:22,662 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:07:22,663 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:07:22,663 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-25 00:07:22,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:07:22,664 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:07:22,665 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:07:22,665 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:07:22,667 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:07:22,667 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:07:22,667 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:07:22,667 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:07:22,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:07:22,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:07:22,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:07:22,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:22,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:07:22,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:07:22,671 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:07:22,671 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:07:22,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:07:22,671 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:07:22,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:07:22,672 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_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2023-11-25 00:07:23,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:07:23,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:07:23,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:07:23,145 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:07:23,146 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:07:23,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-25 00:07:26,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:07:26,860 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:07:26,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2023-11-25 00:07:26,886 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data/dc4e5c813/08cbfed603bf417aab3fdaa810962f73/FLAGb4025f1e2 [2023-11-25 00:07:26,901 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/data/dc4e5c813/08cbfed603bf417aab3fdaa810962f73 [2023-11-25 00:07:26,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:07:26,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:07:26,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:26,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:07:26,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:07:26,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:26" (1/1) ... [2023-11-25 00:07:26,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5776cbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:26, skipping insertion in model container [2023-11-25 00:07:26,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:07:26" (1/1) ... [2023-11-25 00:07:26,993 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:07:27,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:27,884 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-25 00:07:27,913 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:07:28,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:28,054 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:07:28,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:07:28,223 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:07:28,230 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:07:28,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28 WrapperNode [2023-11-25 00:07:28,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:07:28,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:28,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:07:28,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:07:28,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,374 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1060 [2023-11-25 00:07:28,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:07:28,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:07:28,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:07:28,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:07:28,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:07:28,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:07:28,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:07:28,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:07:28,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (1/1) ... [2023-11-25 00:07:28,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:07:28,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:07:28,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:07:28,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:07:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-25 00:07:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-25 00:07:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-25 00:07:28,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-25 00:07:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:07:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:07:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:07:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-25 00:07:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:07:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:07:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-25 00:07:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:07:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:07:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:07:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:07:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:07:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:07:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:07:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:07:28,893 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:07:28,895 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:07:28,933 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-25 00:07:34,405 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:07:34,593 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:07:34,593 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-25 00:07:34,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:34 BoogieIcfgContainer [2023-11-25 00:07:34,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:07:34,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:07:34,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:07:34,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:07:34,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:07:26" (1/3) ... [2023-11-25 00:07:34,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b5f9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:34, skipping insertion in model container [2023-11-25 00:07:34,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:07:28" (2/3) ... [2023-11-25 00:07:34,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b5f9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:07:34, skipping insertion in model container [2023-11-25 00:07:34,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:07:34" (3/3) ... [2023-11-25 00:07:34,604 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2023-11-25 00:07:34,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:07:34,623 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 535 error locations. [2023-11-25 00:07:34,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:07:34,746 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;@46cc5941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:07:34,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 535 error locations. [2023-11-25 00:07:34,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 984 states, 438 states have (on average 2.5136986301369864) internal successors, (1101), 977 states have internal predecessors, (1101), 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) [2023-11-25 00:07:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-25 00:07:34,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:34,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-25 00:07:34,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:34,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:34,773 INFO L85 PathProgramCache]: Analyzing trace with hash 55202, now seen corresponding path program 1 times [2023-11-25 00:07:34,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:34,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839073065] [2023-11-25 00:07:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:34,785 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 00:07:34,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:34,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:34,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:34,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:07:34,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:35,066 INFO L378 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 [2023-11-25 00:07:35,079 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 00:07:35,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:35,080 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:35,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839073065] [2023-11-25 00:07:35,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839073065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:35,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:35,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:07:35,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970306737] [2023-11-25 00:07:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:35,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:35,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:35,122 INFO L87 Difference]: Start difference. First operand has 984 states, 438 states have (on average 2.5136986301369864) internal successors, (1101), 977 states have internal predecessors, (1101), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 00:07:37,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:37,857 INFO L93 Difference]: Finished difference Result 1136 states and 1212 transitions. [2023-11-25 00:07:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-25 00:07:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:37,880 INFO L225 Difference]: With dead ends: 1136 [2023-11-25 00:07:37,881 INFO L226 Difference]: Without dead ends: 1135 [2023-11-25 00:07:37,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 00:07:37,886 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 906 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:37,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 674 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-25 00:07:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2023-11-25 00:07:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 970. [2023-11-25 00:07:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 441 states have (on average 2.312925170068027) internal successors, (1020), 963 states have internal predecessors, (1020), 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) [2023-11-25 00:07:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1038 transitions. [2023-11-25 00:07:37,986 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1038 transitions. Word has length 2 [2023-11-25 00:07:37,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:37,987 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1038 transitions. [2023-11-25 00:07:37,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 00:07:37,987 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1038 transitions. [2023-11-25 00:07:37,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-25 00:07:37,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:37,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-25 00:07:37,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:38,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:38,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:38,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash 55203, now seen corresponding path program 1 times [2023-11-25 00:07:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:38,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618218230] [2023-11-25 00:07:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:38,196 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 00:07:38,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:38,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:38,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:38,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:07:38,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:38,364 INFO L378 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 [2023-11-25 00:07:38,379 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 00:07:38,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:38,379 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:38,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618218230] [2023-11-25 00:07:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618218230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:38,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:38,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:07:38,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191081399] [2023-11-25 00:07:38,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:38,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:38,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:38,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:38,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:38,390 INFO L87 Difference]: Start difference. First operand 970 states and 1038 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 00:07:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:42,439 INFO L93 Difference]: Finished difference Result 1351 states and 1462 transitions. [2023-11-25 00:07:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:42,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-25 00:07:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:42,446 INFO L225 Difference]: With dead ends: 1351 [2023-11-25 00:07:42,446 INFO L226 Difference]: Without dead ends: 1351 [2023-11-25 00:07:42,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 00:07:42,448 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 413 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:42,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1273 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-25 00:07:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-11-25 00:07:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1082. [2023-11-25 00:07:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 549 states have (on average 2.255009107468124) internal successors, (1238), 1075 states have internal predecessors, (1238), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:07:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1266 transitions. [2023-11-25 00:07:42,494 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1266 transitions. Word has length 2 [2023-11-25 00:07:42,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:42,494 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1266 transitions. [2023-11-25 00:07:42,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 00:07:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1266 transitions. [2023-11-25 00:07:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:07:42,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:42,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-25 00:07:42,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:07:42,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:42,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:42,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash -559486548, now seen corresponding path program 1 times [2023-11-25 00:07:42,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432129668] [2023-11-25 00:07:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:42,700 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 00:07:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:42,702 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:42,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:42,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-25 00:07:42,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:42,910 INFO L378 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 [2023-11-25 00:07:42,916 INFO L378 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 [2023-11-25 00:07:43,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-25 00:07:43,017 INFO L378 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 [2023-11-25 00:07:43,040 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-25 00:07:43,041 INFO L378 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 [2023-11-25 00:07:43,066 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 00:07:43,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:43,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:43,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432129668] [2023-11-25 00:07:43,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432129668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:43,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:43,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:07:43,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600630007] [2023-11-25 00:07:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:07:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:07:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:07:43,074 INFO L87 Difference]: Start difference. First operand 1082 states and 1266 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 00:07:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:47,108 INFO L93 Difference]: Finished difference Result 1236 states and 1428 transitions. [2023-11-25 00:07:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:07:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-25 00:07:47,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:47,116 INFO L225 Difference]: With dead ends: 1236 [2023-11-25 00:07:47,116 INFO L226 Difference]: Without dead ends: 1236 [2023-11-25 00:07:47,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:07:47,118 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 2045 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:47,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 344 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-25 00:07:47,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-11-25 00:07:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 959. [2023-11-25 00:07:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 441 states have (on average 2.2857142857142856) internal successors, (1008), 952 states have internal predecessors, (1008), 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) [2023-11-25 00:07:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1026 transitions. [2023-11-25 00:07:47,149 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1026 transitions. Word has length 6 [2023-11-25 00:07:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:47,149 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1026 transitions. [2023-11-25 00:07:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 00:07:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1026 transitions. [2023-11-25 00:07:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:07:47,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:47,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:47,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:47,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:47,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -164213821, now seen corresponding path program 1 times [2023-11-25 00:07:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:47,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22754342] [2023-11-25 00:07:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:47,366 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 00:07:47,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:47,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:47,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:47,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:07:47,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:47,529 INFO L378 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 [2023-11-25 00:07:47,544 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 00:07:47,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:47,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22754342] [2023-11-25 00:07:47,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22754342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:47,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:47,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:07:47,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782483505] [2023-11-25 00:07:47,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:47,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:47,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:47,547 INFO L87 Difference]: Start difference. First operand 959 states and 1026 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-25 00:07:50,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:50,109 INFO L93 Difference]: Finished difference Result 1112 states and 1211 transitions. [2023-11-25 00:07:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) Word has length 7 [2023-11-25 00:07:50,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:50,122 INFO L225 Difference]: With dead ends: 1112 [2023-11-25 00:07:50,122 INFO L226 Difference]: Without dead ends: 1112 [2023-11-25 00:07:50,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 00:07:50,123 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 732 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:50,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 984 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-25 00:07:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-11-25 00:07:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 912. [2023-11-25 00:07:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 441 states have (on average 2.179138321995465) internal successors, (961), 905 states have internal predecessors, (961), 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) [2023-11-25 00:07:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 979 transitions. [2023-11-25 00:07:50,165 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 979 transitions. Word has length 7 [2023-11-25 00:07:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:50,166 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 979 transitions. [2023-11-25 00:07:50,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-25 00:07:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 979 transitions. [2023-11-25 00:07:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:07:50,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:50,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:50,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:07:50,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:50,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:50,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:50,370 INFO L85 PathProgramCache]: Analyzing trace with hash -164213820, now seen corresponding path program 1 times [2023-11-25 00:07:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:50,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509073559] [2023-11-25 00:07:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:50,371 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 00:07:50,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:50,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:50,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:50,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:07:50,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:50,548 INFO L378 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 [2023-11-25 00:07:50,584 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 00:07:50,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:50,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:50,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509073559] [2023-11-25 00:07:50,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509073559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:50,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:50,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:07:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282107249] [2023-11-25 00:07:50,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:50,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:50,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:50,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:50,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:50,598 INFO L87 Difference]: Start difference. First operand 912 states and 979 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-25 00:07:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:54,076 INFO L93 Difference]: Finished difference Result 1170 states and 1272 transitions. [2023-11-25 00:07:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:54,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) Word has length 7 [2023-11-25 00:07:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:54,083 INFO L225 Difference]: With dead ends: 1170 [2023-11-25 00:07:54,083 INFO L226 Difference]: Without dead ends: 1170 [2023-11-25 00:07:54,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 00:07:54,085 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 450 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:54,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1266 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-25 00:07:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-11-25 00:07:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 925. [2023-11-25 00:07:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 464 states have (on average 2.1724137931034484) internal successors, (1008), 918 states have internal predecessors, (1008), 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) [2023-11-25 00:07:54,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1026 transitions. [2023-11-25 00:07:54,112 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1026 transitions. Word has length 7 [2023-11-25 00:07:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:54,112 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1026 transitions. [2023-11-25 00:07:54,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-25 00:07:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1026 transitions. [2023-11-25 00:07:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:07:54,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:54,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:54,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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)] Ended with exit code 0 [2023-11-25 00:07:54,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:54,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:54,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash -864044681, now seen corresponding path program 1 times [2023-11-25 00:07:54,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:54,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670748037] [2023-11-25 00:07:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:54,318 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 00:07:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:54,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:54,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:54,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:07:54,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:54,546 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 00:07:54,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:54,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670748037] [2023-11-25 00:07:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670748037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:54,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:54,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:07:54,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353550579] [2023-11-25 00:07:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:54,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:54,548 INFO L87 Difference]: Start difference. First operand 925 states and 1026 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 00:07:56,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:56,195 INFO L93 Difference]: Finished difference Result 1356 states and 1503 transitions. [2023-11-25 00:07:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:56,197 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 00:07:56,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:56,204 INFO L225 Difference]: With dead ends: 1356 [2023-11-25 00:07:56,204 INFO L226 Difference]: Without dead ends: 1356 [2023-11-25 00:07:56,205 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 00:07:56,205 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 516 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:56,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1623 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-25 00:07:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2023-11-25 00:07:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1079. [2023-11-25 00:07:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 613 states have (on average 2.096247960848287) internal successors, (1285), 1072 states have internal predecessors, (1285), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:07:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1313 transitions. [2023-11-25 00:07:56,242 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1313 transitions. Word has length 10 [2023-11-25 00:07:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:56,242 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1313 transitions. [2023-11-25 00:07:56,246 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 00:07:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1313 transitions. [2023-11-25 00:07:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-25 00:07:56,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:56,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:56,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:56,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:56,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1791306123, now seen corresponding path program 1 times [2023-11-25 00:07:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:56,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393370460] [2023-11-25 00:07:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:56,453 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 00:07:56,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:56,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:56,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-25 00:07:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:56,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:07:56,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:56,622 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 00:07:56,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:56,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393370460] [2023-11-25 00:07:56,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393370460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:56,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:07:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468111904] [2023-11-25 00:07:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:07:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:07:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:56,625 INFO L87 Difference]: Start difference. First operand 1079 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:57,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:07:57,567 INFO L93 Difference]: Finished difference Result 1025 states and 1233 transitions. [2023-11-25 00:07:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:07:57,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-25 00:07:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:07:57,574 INFO L225 Difference]: With dead ends: 1025 [2023-11-25 00:07:57,575 INFO L226 Difference]: Without dead ends: 1025 [2023-11-25 00:07:57,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:07:57,576 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 70 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:07:57,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1561 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-25 00:07:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-11-25 00:07:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2023-11-25 00:07:57,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 583 states have (on average 2.0668953687821614) internal successors, (1205), 1018 states have internal predecessors, (1205), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:07:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1233 transitions. [2023-11-25 00:07:57,601 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1233 transitions. Word has length 12 [2023-11-25 00:07:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:07:57,602 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1233 transitions. [2023-11-25 00:07:57,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:07:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1233 transitions. [2023-11-25 00:07:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-25 00:07:57,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:07:57,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:07:57,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-25 00:07:57,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:57,806 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr533ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:07:57,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:07:57,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1008937855, now seen corresponding path program 1 times [2023-11-25 00:07:57,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:07:57,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612155279] [2023-11-25 00:07:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:07:57,807 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 00:07:57,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:07:57,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:57,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:07:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:07:58,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:07:58,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:07:58,026 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:58,027 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:58,028 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:07:58,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-25 00:07:58,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:07:58,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-25 00:07:58,144 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 00:07:58,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:07:58,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:07:58,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612155279] [2023-11-25 00:07:58,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612155279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:07:58,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:07:58,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:07:58,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348028321] [2023-11-25 00:07:58,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:07:58,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:07:58,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:07:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:07:58,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:07:58,148 INFO L87 Difference]: Start difference. First operand 1025 states and 1233 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:00,384 INFO L93 Difference]: Finished difference Result 1336 states and 1596 transitions. [2023-11-25 00:08:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:08:00,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-25 00:08:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:00,394 INFO L225 Difference]: With dead ends: 1336 [2023-11-25 00:08:00,394 INFO L226 Difference]: Without dead ends: 1336 [2023-11-25 00:08:00,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:08:00,396 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 318 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:00,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 2375 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-25 00:08:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2023-11-25 00:08:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1024. [2023-11-25 00:08:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 582 states have (on average 2.0670103092783507) internal successors, (1203), 1017 states have internal predecessors, (1203), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:08:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1231 transitions. [2023-11-25 00:08:00,430 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1231 transitions. Word has length 13 [2023-11-25 00:08:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:00,431 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1231 transitions. [2023-11-25 00:08:00,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:08:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1231 transitions. [2023-11-25 00:08:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-25 00:08:00,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:00,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:00,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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)] Ended with exit code 0 [2023-11-25 00:08:00,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:00,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:08:00,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1206139973, now seen corresponding path program 1 times [2023-11-25 00:08:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:08:00,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555289307] [2023-11-25 00:08:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:00,639 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 00:08:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:08:00,641 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:00,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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)] Waiting until timeout for monitored process [2023-11-25 00:08:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:00,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:08:00,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:08:00,853 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 00:08:00,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:08:00,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:08:00,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555289307] [2023-11-25 00:08:00,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555289307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:00,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:00,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:08:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627627409] [2023-11-25 00:08:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:00,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:08:00,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:08:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:08:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:08:00,858 INFO L87 Difference]: Start difference. First operand 1024 states and 1231 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 00:08:01,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:01,882 INFO L93 Difference]: Finished difference Result 970 states and 1151 transitions. [2023-11-25 00:08:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:08:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-11-25 00:08:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:01,889 INFO L225 Difference]: With dead ends: 970 [2023-11-25 00:08:01,889 INFO L226 Difference]: Without dead ends: 970 [2023-11-25 00:08:01,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 00:08:01,891 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 70 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:01,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1487 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-25 00:08:01,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-25 00:08:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2023-11-25 00:08:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 552 states have (on average 2.0344202898550723) internal successors, (1123), 963 states have internal predecessors, (1123), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:08:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1151 transitions. [2023-11-25 00:08:01,919 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1151 transitions. Word has length 15 [2023-11-25 00:08:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:01,919 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1151 transitions. [2023-11-25 00:08:01,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 00:08:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1151 transitions. [2023-11-25 00:08:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-25 00:08:01,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:01,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:08:01,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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)] Ended with exit code 0 [2023-11-25 00:08:02,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:02,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:08:02,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:02,125 INFO L85 PathProgramCache]: Analyzing trace with hash 540651572, now seen corresponding path program 1 times [2023-11-25 00:08:02,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:08:02,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039160486] [2023-11-25 00:08:02,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:02,126 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 00:08:02,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:08:02,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:02,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:02,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:08:02,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:08:02,386 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 00:08:02,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:08:02,386 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:08:02,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039160486] [2023-11-25 00:08:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039160486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:02,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:02,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:08:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141868869] [2023-11-25 00:08:02,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:02,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:08:02,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:08:02,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:08:02,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:08:02,388 INFO L87 Difference]: Start difference. First operand 970 states and 1151 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 00:08:03,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:03,643 INFO L93 Difference]: Finished difference Result 956 states and 1109 transitions. [2023-11-25 00:08:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:08:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-11-25 00:08:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:03,651 INFO L225 Difference]: With dead ends: 956 [2023-11-25 00:08:03,651 INFO L226 Difference]: Without dead ends: 956 [2023-11-25 00:08:03,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 00:08:03,652 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 58 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:03,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2187 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-25 00:08:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-11-25 00:08:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 954. [2023-11-25 00:08:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 550 states have (on average 1.961818181818182) internal successors, (1079), 947 states have internal predecessors, (1079), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:08:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1107 transitions. [2023-11-25 00:08:03,678 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1107 transitions. Word has length 17 [2023-11-25 00:08:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:03,679 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1107 transitions. [2023-11-25 00:08:03,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 00:08:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1107 transitions. [2023-11-25 00:08:03,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-25 00:08:03,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:03,680 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] [2023-11-25 00:08:03,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:03,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:03,884 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:08:03,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:03,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1465329026, now seen corresponding path program 1 times [2023-11-25 00:08:03,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:08:03,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340940641] [2023-11-25 00:08:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:03,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:08:03,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:08:03,888 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:03,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-25 00:08:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:04,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:08:04,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:08:04,119 INFO L378 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 [2023-11-25 00:08:04,210 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 00:08:04,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:08:04,210 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:08:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340940641] [2023-11-25 00:08:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340940641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:04,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:04,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:08:04,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323138808] [2023-11-25 00:08:04,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:04,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:08:04,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:08:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:08:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:08:04,212 INFO L87 Difference]: Start difference. First operand 954 states and 1107 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 00:08:07,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:08:07,015 INFO L93 Difference]: Finished difference Result 1178 states and 1407 transitions. [2023-11-25 00:08:07,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:08:07,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-11-25 00:08:07,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:08:07,021 INFO L225 Difference]: With dead ends: 1178 [2023-11-25 00:08:07,021 INFO L226 Difference]: Without dead ends: 1178 [2023-11-25 00:08:07,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 00:08:07,023 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 625 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:08:07,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1057 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-25 00:08:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-11-25 00:08:07,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 950. [2023-11-25 00:08:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 550 states have (on average 1.9472727272727273) internal successors, (1071), 943 states have internal predecessors, (1071), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-25 00:08:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1099 transitions. [2023-11-25 00:08:07,057 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1099 transitions. Word has length 31 [2023-11-25 00:08:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:08:07,057 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1099 transitions. [2023-11-25 00:08:07,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 00:08:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1099 transitions. [2023-11-25 00:08:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-25 00:08:07,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:08:07,061 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] [2023-11-25 00:08:07,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-25 00:08:07,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:07,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-11-25 00:08:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:08:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1465329027, now seen corresponding path program 1 times [2023-11-25 00:08:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:08:07,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104649302] [2023-11-25 00:08:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:08:07,267 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 00:08:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:08:07,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:07,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a1fc13f-5261-46c5-b8be-b984ac5382bb/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 00:08:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:08:07,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:08:07,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:08:07,542 INFO L378 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 [2023-11-25 00:08:07,793 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 00:08:07,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:08:07,794 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:08:07,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104649302] [2023-11-25 00:08:07,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104649302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:08:07,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:08:07,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:08:07,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793876844] [2023-11-25 00:08:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:08:07,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:08:07,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:08:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:08:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:08:07,796 INFO L87 Difference]: Start difference. First operand 950 states and 1099 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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)