./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX --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 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:27,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:27,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 01:03:27,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:27,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:28,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:28,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:28,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:28,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:28,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:28,021 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:28,022 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:28,023 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:28,024 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:03:28,025 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:28,025 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:28,025 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:03:28,026 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:03:28,026 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:28,027 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:03:28,027 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:03:28,028 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:03:28,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:03:28,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:03:28,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:28,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:28,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:28,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:28,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:28,032 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:03:28,033 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:03:28,033 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:03:28,033 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:28,034 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:03:28,034 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:28,034 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:28,034 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:28,035 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:28,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:28,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:28,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:28,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:28,036 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:03:28,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:03:28,037 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:28,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:28,037 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_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2023-11-12 01:03:28,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:28,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:28,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:28,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:28,388 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:28,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2023-11-12 01:03:31,476 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:31,904 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:31,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2023-11-12 01:03:31,927 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data/59c6e9251/9f07c207f7f245218a5a37ac0c0351a8/FLAG8d7d9fa75 [2023-11-12 01:03:31,941 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data/59c6e9251/9f07c207f7f245218a5a37ac0c0351a8 [2023-11-12 01:03:31,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:31,945 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:31,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:31,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:31,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:31,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:31,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181339c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:31, skipping insertion in model container [2023-11-12 01:03:31,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:31" (1/1) ... [2023-11-12 01:03:32,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:32,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:32,698 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) [2023-11-12 01:03:32,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@265c3493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:32, skipping insertion in model container [2023-11-12 01:03:32,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:32,700 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 01:03:32,702 INFO L158 Benchmark]: Toolchain (without parser) took 755.35ms. Allocated memory is still 167.8MB. Free memory was 126.2MB in the beginning and 105.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 01:03:32,702 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 69.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:03:32,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 752.74ms. Allocated memory is still 167.8MB. Free memory was 126.2MB in the beginning and 105.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 01:03:32,704 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 125.8MB. Free memory is still 69.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 752.74ms. Allocated memory is still 167.8MB. Free memory was 126.2MB in the beginning and 105.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX --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 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:35,192 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:35,321 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 01:03:35,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:35,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:35,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:35,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:35,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:35,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:35,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:35,399 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:35,400 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:35,400 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:35,402 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:35,403 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:35,403 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:35,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:03:35,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:03:35,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:35,406 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:35,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:35,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:35,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:35,408 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:03:35,409 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:03:35,409 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:03:35,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:35,410 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:03:35,410 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 01:03:35,411 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 01:03:35,412 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:35,413 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:35,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:35,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:35,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 01:03:35,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:35,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:35,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:35,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:35,416 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 01:03:35,416 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 01:03:35,416 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:35,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:35,417 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_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2023-11-12 01:03:35,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:35,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:35,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:35,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:35,896 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:35,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2023-11-12 01:03:39,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:39,751 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:39,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2023-11-12 01:03:39,774 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data/fe04ad024/62972e8893f947a58cd0bd12f86f559d/FLAGc134024bd [2023-11-12 01:03:39,788 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/data/fe04ad024/62972e8893f947a58cd0bd12f86f559d [2023-11-12 01:03:39,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:39,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:39,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:39,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:39,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:39,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:39" (1/1) ... [2023-11-12 01:03:39,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de4a4b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:39, skipping insertion in model container [2023-11-12 01:03:39,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:39" (1/1) ... [2023-11-12 01:03:39,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:40,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:40,732 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 01:03:40,784 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:40,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:40,885 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:41,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:41,070 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:41,079 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:41,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41 WrapperNode [2023-11-12 01:03:41,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:41,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:41,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:41,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:41,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,199 INFO L138 Inliner]: procedures = 179, calls = 331, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-12 01:03:41,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:41,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:41,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:41,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:41,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:41,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:41,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:41,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:41,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (1/1) ... [2023-11-12 01:03:41,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:41,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:41,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:41,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:41,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 01:03:41,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 01:03:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 01:03:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 01:03:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 01:03:41,435 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 01:03:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:03:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:03:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:03:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 01:03:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:03:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:03:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 01:03:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 01:03:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:41,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:41,725 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:41,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:41,776 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 01:03:48,017 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:48,032 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:48,033 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-12 01:03:48,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:48 BoogieIcfgContainer [2023-11-12 01:03:48,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:48,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:48,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:48,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:48,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:39" (1/3) ... [2023-11-12 01:03:48,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531a6271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:48, skipping insertion in model container [2023-11-12 01:03:48,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:41" (2/3) ... [2023-11-12 01:03:48,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531a6271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:48, skipping insertion in model container [2023-11-12 01:03:48,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:48" (3/3) ... [2023-11-12 01:03:48,047 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-2.i [2023-11-12 01:03:48,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:48,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2023-11-12 01:03:48,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:48,173 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;@6eb02d0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:48,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2023-11-12 01:03:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-12 01:03:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:03:48,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:48,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:03:48,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:03:48,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-12 01:03:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:48,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960214205] [2023-11-12 01:03:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:48,214 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 [2023-11-12 01:03:48,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:48,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:03:48,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:03:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:48,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:48,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:48,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:03:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:48,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:48,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960214205] [2023-11-12 01:03:48,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960214205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:48,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:48,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:48,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745884262] [2023-11-12 01:03:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:48,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:48,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:48,514 INFO L87 Difference]: Start difference. First operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:51,492 INFO L93 Difference]: Finished difference Result 1434 states and 1509 transitions. [2023-11-12 01:03:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 01:03:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:51,521 INFO L225 Difference]: With dead ends: 1434 [2023-11-12 01:03:51,521 INFO L226 Difference]: Without dead ends: 1432 [2023-11-12 01:03:51,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:51,527 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1167 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:51,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 914 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-12 01:03:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-11-12 01:03:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1244. [2023-11-12 01:03:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:03:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1311 transitions. [2023-11-12 01:03:51,687 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1311 transitions. Word has length 3 [2023-11-12 01:03:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:51,688 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1311 transitions. [2023-11-12 01:03:51,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1311 transitions. [2023-11-12 01:03:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:03:51,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:51,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:03:51,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:03:51,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:03:51,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:03:51,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:51,891 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-12 01:03:51,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:51,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371164949] [2023-11-12 01:03:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:51,893 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 [2023-11-12 01:03:51,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:51,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:03:51,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:03:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:52,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:52,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:52,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:03:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:52,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:52,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371164949] [2023-11-12 01:03:52,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371164949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:52,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273171110] [2023-11-12 01:03:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:52,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:52,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:52,083 INFO L87 Difference]: Start difference. First operand 1244 states and 1311 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:56,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:56,728 INFO L93 Difference]: Finished difference Result 1838 states and 1947 transitions. [2023-11-12 01:03:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:56,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 01:03:56,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:56,740 INFO L225 Difference]: With dead ends: 1838 [2023-11-12 01:03:56,740 INFO L226 Difference]: Without dead ends: 1838 [2023-11-12 01:03:56,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:56,742 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 634 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:56,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1710 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-12 01:03:56,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2023-11-12 01:03:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1450. [2023-11-12 01:03:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 830 states have (on average 2.0734939759036144) internal successors, (1721), 1444 states have internal predecessors, (1721), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:03:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1729 transitions. [2023-11-12 01:03:56,789 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1729 transitions. Word has length 3 [2023-11-12 01:03:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:56,789 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1729 transitions. [2023-11-12 01:03:56,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1729 transitions. [2023-11-12 01:03:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 01:03:56,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:56,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:56,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:03:57,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:03:57,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:03:57,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:57,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-12 01:03:57,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:57,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023816056] [2023-11-12 01:03:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:57,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:57,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:57,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:03:57,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:03:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:57,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:03:57,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:57,227 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:03:57,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:03:57,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:03:57,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 01:03:57,364 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 01:03:57,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 01:03:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:57,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:57,392 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:57,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023816056] [2023-11-12 01:03:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023816056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558197423] [2023-11-12 01:03:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:57,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:57,396 INFO L87 Difference]: Start difference. First operand 1450 states and 1729 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:01,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:01,811 INFO L93 Difference]: Finished difference Result 1632 states and 1922 transitions. [2023-11-12 01:04:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:04:01,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 01:04:01,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:01,821 INFO L225 Difference]: With dead ends: 1632 [2023-11-12 01:04:01,821 INFO L226 Difference]: Without dead ends: 1632 [2023-11-12 01:04:01,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:04:01,823 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1464 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:01,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 530 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-12 01:04:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-12 01:04:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1233. [2023-11-12 01:04:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 623 states have (on average 2.07223113964687) internal successors, (1291), 1227 states have internal predecessors, (1291), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1299 transitions. [2023-11-12 01:04:01,858 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1299 transitions. Word has length 7 [2023-11-12 01:04:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:01,858 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1299 transitions. [2023-11-12 01:04:01,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1299 transitions. [2023-11-12 01:04:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:04:01,860 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:01,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:01,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:02,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:02,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:02,078 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-12 01:04:02,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818872054] [2023-11-12 01:04:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:02,079 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 [2023-11-12 01:04:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:02,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:02,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:02,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:04:02,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:02,251 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:04:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:02,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:02,269 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:02,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818872054] [2023-11-12 01:04:02,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818872054] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:02,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:02,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:04:02,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080096268] [2023-11-12 01:04:02,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:02,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:04:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:02,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:04:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:02,272 INFO L87 Difference]: Start difference. First operand 1233 states and 1299 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-12 01:04:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:04,978 INFO L93 Difference]: Finished difference Result 1566 states and 1662 transitions. [2023-11-12 01:04:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:04:04,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-12 01:04:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:04,988 INFO L225 Difference]: With dead ends: 1566 [2023-11-12 01:04:04,988 INFO L226 Difference]: Without dead ends: 1566 [2023-11-12 01:04:04,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:04,990 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 979 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:04,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1504 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 01:04:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-11-12 01:04:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1186. [2023-11-12 01:04:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 623 states have (on average 1.9967897271268058) internal successors, (1244), 1180 states have internal predecessors, (1244), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1252 transitions. [2023-11-12 01:04:05,024 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1252 transitions. Word has length 8 [2023-11-12 01:04:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:05,025 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1252 transitions. [2023-11-12 01:04:05,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-12 01:04:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1252 transitions. [2023-11-12 01:04:05,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:04:05,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:05,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:05,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:05,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:05,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:05,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:05,239 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-12 01:04:05,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:05,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988695446] [2023-11-12 01:04:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:05,240 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 [2023-11-12 01:04:05,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:05,247 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:05,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:05,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:04:05,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:05,469 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:04:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:05,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:05,501 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:05,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988695446] [2023-11-12 01:04:05,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988695446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:05,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:05,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:04:05,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651159328] [2023-11-12 01:04:05,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:05,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:04:05,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:04:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:05,509 INFO L87 Difference]: Start difference. First operand 1186 states and 1252 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-12 01:04:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:09,207 INFO L93 Difference]: Finished difference Result 1648 states and 1747 transitions. [2023-11-12 01:04:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:04:09,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-12 01:04:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:09,215 INFO L225 Difference]: With dead ends: 1648 [2023-11-12 01:04:09,215 INFO L226 Difference]: Without dead ends: 1648 [2023-11-12 01:04:09,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:09,217 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 682 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:09,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1881 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-12 01:04:09,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-11-12 01:04:09,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1208. [2023-11-12 01:04:09,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 655 states have (on average 1.984732824427481) internal successors, (1300), 1202 states have internal predecessors, (1300), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1308 transitions. [2023-11-12 01:04:09,250 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1308 transitions. Word has length 8 [2023-11-12 01:04:09,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:09,250 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1308 transitions. [2023-11-12 01:04:09,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-12 01:04:09,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1308 transitions. [2023-11-12 01:04:09,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:04:09,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:09,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:09,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 01:04:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:09,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:09,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:09,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2045817064, now seen corresponding path program 1 times [2023-11-12 01:04:09,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:09,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785135577] [2023-11-12 01:04:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:09,464 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 [2023-11-12 01:04:09,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:09,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:09,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:09,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:04:09,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:09,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:09,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:09,727 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:09,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785135577] [2023-11-12 01:04:09,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785135577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:09,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:09,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:04:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367913971] [2023-11-12 01:04:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:04:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:04:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:04:09,729 INFO L87 Difference]: Start difference. First operand 1208 states and 1308 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:10,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:10,722 INFO L93 Difference]: Finished difference Result 1861 states and 2005 transitions. [2023-11-12 01:04:10,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:04:10,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 01:04:10,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:10,733 INFO L225 Difference]: With dead ends: 1861 [2023-11-12 01:04:10,734 INFO L226 Difference]: Without dead ends: 1861 [2023-11-12 01:04:10,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:04:10,735 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 761 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3682 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:10,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3682 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 01:04:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-11-12 01:04:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1458. [2023-11-12 01:04:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 905 states have (on average 1.9502762430939227) internal successors, (1765), 1452 states have internal predecessors, (1765), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1773 transitions. [2023-11-12 01:04:10,800 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1773 transitions. Word has length 13 [2023-11-12 01:04:10,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:10,800 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1773 transitions. [2023-11-12 01:04:10,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:04:10,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1773 transitions. [2023-11-12 01:04:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 01:04:10,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:10,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:10,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:11,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:11,014 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:11,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:11,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1459496966, now seen corresponding path program 1 times [2023-11-12 01:04:11,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:11,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098036623] [2023-11-12 01:04:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:11,015 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 [2023-11-12 01:04:11,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:11,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:11,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:11,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:04:11,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:11,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:11,211 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098036623] [2023-11-12 01:04:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098036623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:04:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002614448] [2023-11-12 01:04:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:04:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:04:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:11,214 INFO L87 Difference]: Start difference. First operand 1458 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2023-11-12 01:04:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:11,253 INFO L93 Difference]: Finished difference Result 1398 states and 1687 transitions. [2023-11-12 01:04:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:04:11,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 [2023-11-12 01:04:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:11,261 INFO L225 Difference]: With dead ends: 1398 [2023-11-12 01:04:11,261 INFO L226 Difference]: Without dead ends: 1398 [2023-11-12 01:04:11,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:11,263 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 81 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:11,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2286 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:04:11,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-11-12 01:04:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1398. [2023-11-12 01:04:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 869 states have (on average 1.9321058688147297) internal successors, (1679), 1392 states have internal predecessors, (1679), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1687 transitions. [2023-11-12 01:04:11,298 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1687 transitions. Word has length 13 [2023-11-12 01:04:11,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:11,298 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 1687 transitions. [2023-11-12 01:04:11,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2023-11-12 01:04:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1687 transitions. [2023-11-12 01:04:11,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 01:04:11,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:11,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:11,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 01:04:11,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:11,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr365REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:11,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:11,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1877695967, now seen corresponding path program 1 times [2023-11-12 01:04:11,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:11,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032472962] [2023-11-12 01:04:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:11,513 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 [2023-11-12 01:04:11,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:11,514 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:11,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:11,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:04:11,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:11,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:11,706 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:11,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032472962] [2023-11-12 01:04:11,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032472962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:11,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:11,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:04:11,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241505371] [2023-11-12 01:04:11,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:11,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:04:11,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:11,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:04:11,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:04:11,710 INFO L87 Difference]: Start difference. First operand 1398 states and 1687 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2023-11-12 01:04:11,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:11,789 INFO L93 Difference]: Finished difference Result 1370 states and 1631 transitions. [2023-11-12 01:04:11,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:04:11,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 [2023-11-12 01:04:11,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:11,796 INFO L225 Difference]: With dead ends: 1370 [2023-11-12 01:04:11,796 INFO L226 Difference]: Without dead ends: 1370 [2023-11-12 01:04:11,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:04:11,797 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 62 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:11,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3368 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:04:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-11-12 01:04:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1368. [2023-11-12 01:04:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 853 states have (on average 1.9003516998827668) internal successors, (1621), 1362 states have internal predecessors, (1621), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1629 transitions. [2023-11-12 01:04:11,829 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1629 transitions. Word has length 15 [2023-11-12 01:04:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:11,829 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1629 transitions. [2023-11-12 01:04:11,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2023-11-12 01:04:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1629 transitions. [2023-11-12 01:04:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 01:04:11,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:11,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:11,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 01:04:12,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:12,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr632ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:12,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash 816098230, now seen corresponding path program 1 times [2023-11-12 01:04:12,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:12,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726834101] [2023-11-12 01:04:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:12,048 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 [2023-11-12 01:04:12,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:12,049 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:12,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:12,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:04:12,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:12,289 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:04:12,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:04:12,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:04:12,298 INFO L351 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 [2023-11-12 01:04:12,365 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 01:04:12,365 INFO L351 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 [2023-11-12 01:04:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:12,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:12,383 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726834101] [2023-11-12 01:04:12,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726834101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:12,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:04:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485196048] [2023-11-12 01:04:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:12,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:04:12,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:04:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:04:12,385 INFO L87 Difference]: Start difference. First operand 1368 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-12 01:04:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:14,084 INFO L93 Difference]: Finished difference Result 1808 states and 2130 transitions. [2023-11-12 01:04:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:04:14,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-11-12 01:04:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:14,092 INFO L225 Difference]: With dead ends: 1808 [2023-11-12 01:04:14,092 INFO L226 Difference]: Without dead ends: 1808 [2023-11-12 01:04:14,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:04:14,093 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 428 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:14,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 3237 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 01:04:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-11-12 01:04:14,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1367. [2023-11-12 01:04:14,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 852 states have (on average 1.9002347417840375) internal successors, (1619), 1361 states have internal predecessors, (1619), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1627 transitions. [2023-11-12 01:04:14,126 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1627 transitions. Word has length 16 [2023-11-12 01:04:14,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:14,126 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1627 transitions. [2023-11-12 01:04:14,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-11-12 01:04:14,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1627 transitions. [2023-11-12 01:04:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 01:04:14,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:14,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:14,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:14,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:14,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-12 01:04:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600699057] [2023-11-12 01:04:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:14,342 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 [2023-11-12 01:04:14,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:14,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:14,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:14,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:04:14,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:14,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:14,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:14,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600699057] [2023-11-12 01:04:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1600699057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:14,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:14,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:04:14,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599710937] [2023-11-12 01:04:14,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:14,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:04:14,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:04:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:14,590 INFO L87 Difference]: Start difference. First operand 1367 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-12 01:04:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:14,629 INFO L93 Difference]: Finished difference Result 1307 states and 1541 transitions. [2023-11-12 01:04:14,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:04:14,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-12 01:04:14,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:14,636 INFO L225 Difference]: With dead ends: 1307 [2023-11-12 01:04:14,636 INFO L226 Difference]: Without dead ends: 1307 [2023-11-12 01:04:14,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:04:14,637 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 81 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:14,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:04:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-12 01:04:14,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-12 01:04:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 816 states have (on average 1.8786764705882353) internal successors, (1533), 1301 states have internal predecessors, (1533), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1541 transitions. [2023-11-12 01:04:14,668 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1541 transitions. Word has length 18 [2023-11-12 01:04:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:14,669 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1541 transitions. [2023-11-12 01:04:14,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-12 01:04:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1541 transitions. [2023-11-12 01:04:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 01:04:14,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:14,673 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] [2023-11-12 01:04:14,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:14,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:14,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:14,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-12 01:04:14,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:14,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849031957] [2023-11-12 01:04:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:14,886 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 [2023-11-12 01:04:14,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:14,887 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:14,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:15,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:04:15,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:15,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:15,123 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:15,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849031957] [2023-11-12 01:04:15,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849031957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:15,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:15,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:04:15,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743370535] [2023-11-12 01:04:15,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:15,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:04:15,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:04:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:04:15,126 INFO L87 Difference]: Start difference. First operand 1307 states and 1541 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-12 01:04:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:15,213 INFO L93 Difference]: Finished difference Result 1279 states and 1485 transitions. [2023-11-12 01:04:15,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:04:15,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-12 01:04:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:15,220 INFO L225 Difference]: With dead ends: 1279 [2023-11-12 01:04:15,221 INFO L226 Difference]: Without dead ends: 1279 [2023-11-12 01:04:15,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:04:15,222 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 62 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:15,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3134 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:04:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-12 01:04:15,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1277. [2023-11-12 01:04:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 800 states have (on average 1.84375) internal successors, (1475), 1271 states have internal predecessors, (1475), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:15,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1483 transitions. [2023-11-12 01:04:15,246 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1483 transitions. Word has length 20 [2023-11-12 01:04:15,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:15,247 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1483 transitions. [2023-11-12 01:04:15,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-12 01:04:15,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1483 transitions. [2023-11-12 01:04:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 01:04:15,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:15,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:15,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:15,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:15,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:15,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-12 01:04:15,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:15,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217977458] [2023-11-12 01:04:15,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:15,463 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 [2023-11-12 01:04:15,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:15,464 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:15,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:15,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:04:15,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:15,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:04:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:15,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:15,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:15,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217977458] [2023-11-12 01:04:15,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217977458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:15,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:15,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:04:15,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540087834] [2023-11-12 01:04:15,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:15,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:04:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:15,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:04:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:04:15,829 INFO L87 Difference]: Start difference. First operand 1277 states and 1483 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-12 01:04:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:04:18,917 INFO L93 Difference]: Finished difference Result 1666 states and 1986 transitions. [2023-11-12 01:04:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:04:18,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2023-11-12 01:04:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:04:18,927 INFO L225 Difference]: With dead ends: 1666 [2023-11-12 01:04:18,927 INFO L226 Difference]: Without dead ends: 1666 [2023-11-12 01:04:18,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:04:18,928 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 826 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:04:18,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1486 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 01:04:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-11-12 01:04:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1273. [2023-11-12 01:04:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 800 states have (on average 1.83375) internal successors, (1467), 1267 states have internal predecessors, (1467), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 01:04:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1475 transitions. [2023-11-12 01:04:18,956 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1475 transitions. Word has length 34 [2023-11-12 01:04:18,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:04:18,957 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 1475 transitions. [2023-11-12 01:04:18,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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) [2023-11-12 01:04:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1475 transitions. [2023-11-12 01:04:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 01:04:18,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:04:18,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:04:18,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 01:04:19,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 01:04:19,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 01:04:19,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:04:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-12 01:04:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:04:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885373103] [2023-11-12 01:04:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:04:19,177 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 [2023-11-12 01:04:19,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:04:19,178 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 01:04:19,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca8c20f-dad0-4a04-b5dc-1c270da63051/bin/utaipan-verify-NcY6lQBIFX/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 (14)] Waiting until timeout for monitored process [2023-11-12 01:04:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:04:19,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 01:04:19,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:04:19,422 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:04:19,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:04:19,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:04:19,646 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:04:19,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885373103] [2023-11-12 01:04:19,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885373103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:04:19,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:04:19,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:04:19,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830813714] [2023-11-12 01:04:19,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:04:19,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:04:19,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:04:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:04:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:04:19,647 INFO L87 Difference]: Start difference. First operand 1273 states and 1475 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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)