./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:31:38,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:31:38,987 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-06 20:31:38,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:31:38,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:31:39,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:31:39,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:31:39,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:31:39,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:31:39,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:31:39,023 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:31:39,024 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:31:39,024 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:31:39,025 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-06 20:31:39,025 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:31:39,026 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:31:39,027 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-06 20:31:39,027 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-06 20:31:39,028 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:31:39,029 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-06 20:31:39,029 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-06 20:31:39,030 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-06 20:31:39,031 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:31:39,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:31:39,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:31:39,033 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:31:39,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:31:39,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:31:39,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:31:39,036 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:31:39,036 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:31:39,037 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:31:39,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:31:39,038 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:31:39,038 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:31:39,039 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:31:39,039 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:31:39,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:31:39,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:31:39,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:39,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:31:39,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:31:39,042 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-06 20:31:39,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 20:31:39,043 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:31:39,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:31:39,044 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_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b [2023-11-06 20:31:39,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:31:39,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:31:39,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:31:39,412 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:31:39,414 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:31:39,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2023-11-06 20:31:42,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:31:43,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:31:43,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2023-11-06 20:31:43,232 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data/5d3fafabc/18ee57775e0f42d89a6c1c693ab910dc/FLAG6099797f4 [2023-11-06 20:31:43,250 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data/5d3fafabc/18ee57775e0f42d89a6c1c693ab910dc [2023-11-06 20:31:43,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:31:43,255 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:31:43,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:43,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:31:43,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:31:43,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:43" (1/1) ... [2023-11-06 20:31:43,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f869341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:43, skipping insertion in model container [2023-11-06 20:31:43,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:43" (1/1) ... [2023-11-06 20:31:43,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:44,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:44,056 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 20:31:44,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@718ca79c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:44, skipping insertion in model container [2023-11-06 20:31:44,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:44,059 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 20:31:44,085 INFO L158 Benchmark]: Toolchain (without parser) took 805.25ms. Allocated memory is still 119.5MB. Free memory was 76.2MB in the beginning and 55.1MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:31:44,086 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 119.5MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 20:31:44,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 802.12ms. Allocated memory is still 119.5MB. Free memory was 76.1MB in the beginning and 55.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 20:31:44,088 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 119.5MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 802.12ms. Allocated memory is still 119.5MB. Free memory was 76.1MB in the beginning and 55.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 20:31:46,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 20:31:46,973 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-06 20:31:46,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 20:31:46,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 20:31:47,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 20:31:47,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 20:31:47,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 20:31:47,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 20:31:47,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 20:31:47,039 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-06 20:31:47,039 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-06 20:31:47,040 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-06 20:31:47,041 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-06 20:31:47,042 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-06 20:31:47,042 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-06 20:31:47,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 20:31:47,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 20:31:47,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 20:31:47,045 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 20:31:47,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 20:31:47,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 20:31:47,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 20:31:47,047 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 20:31:47,048 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 20:31:47,048 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 20:31:47,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 20:31:47,049 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 20:31:47,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 20:31:47,050 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 20:31:47,052 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 20:31:47,052 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 20:31:47,052 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 20:31:47,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 20:31:47,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 20:31:47,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 20:31:47,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:47,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 20:31:47,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 20:31:47,055 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-06 20:31:47,055 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 20:31:47,056 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-06 20:31:47,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 20:31:47,056 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_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c8bfc4504f1d1d767281638f115bf6ca8337de4769381189ae1d6a9b301298b [2023-11-06 20:31:47,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 20:31:47,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 20:31:47,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 20:31:47,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 20:31:47,473 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 20:31:47,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2023-11-06 20:31:50,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 20:31:51,194 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 20:31:51,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-2.i [2023-11-06 20:31:51,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data/5d8c85019/21547e9b66b043378631a701cfdfea58/FLAGcc4f23408 [2023-11-06 20:31:51,251 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/data/5d8c85019/21547e9b66b043378631a701cfdfea58 [2023-11-06 20:31:51,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 20:31:51,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 20:31:51,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:51,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 20:31:51,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 20:31:51,270 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:51" (1/1) ... [2023-11-06 20:31:51,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d068966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:51, skipping insertion in model container [2023-11-06 20:31:51,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:31:51" (1/1) ... [2023-11-06 20:31:51,363 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:52,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:52,067 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 20:31:52,095 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 20:31:52,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:52,279 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 20:31:52,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 20:31:52,497 INFO L206 MainTranslator]: Completed translation [2023-11-06 20:31:52,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52 WrapperNode [2023-11-06 20:31:52,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 20:31:52,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:52,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 20:31:52,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 20:31:52,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,695 INFO L138 Inliner]: procedures = 180, calls = 401, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1340 [2023-11-06 20:31:52,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 20:31:52,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 20:31:52,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 20:31:52,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 20:31:52,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 20:31:52,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 20:31:52,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 20:31:52,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 20:31:52,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (1/1) ... [2023-11-06 20:31:52,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 20:31:52,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/z3 [2023-11-06 20:31:52,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 20:31:52,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 20:31:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 20:31:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 20:31:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 20:31:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 20:31:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 20:31:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 20:31:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 20:31:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 20:31:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 20:31:52,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 20:31:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 20:31:52,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 20:31:52,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 20:31:53,290 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 20:31:53,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 20:31:53,298 WARN L818 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-06 20:32:00,450 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 20:32:00,475 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 20:32:00,475 INFO L302 CfgBuilder]: Removed 69 assume(true) statements. [2023-11-06 20:32:00,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:32:00 BoogieIcfgContainer [2023-11-06 20:32:00,480 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 20:32:00,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 20:32:00,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 20:32:00,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 20:32:00,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:31:51" (1/3) ... [2023-11-06 20:32:00,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63984555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:32:00, skipping insertion in model container [2023-11-06 20:32:00,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:31:52" (2/3) ... [2023-11-06 20:32:00,492 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63984555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:32:00, skipping insertion in model container [2023-11-06 20:32:00,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:32:00" (3/3) ... [2023-11-06 20:32:00,494 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-2.i [2023-11-06 20:32:00,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 20:32:00,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2023-11-06 20:32:00,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 20:32:00,596 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;@4677c31d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-06 20:32:00,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2023-11-06 20:32:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 1483 states, 717 states have (on average 2.2482566248256624) internal successors, (1612), 1474 states have internal predecessors, (1612), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-06 20:32:00,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:32:00,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:00,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:32:00,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-06 20:32:00,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2023-11-06 20:32:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:32:00,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973778331] [2023-11-06 20:32:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:00,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:32:00,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:32:00,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 20:32:00,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 20:32:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:32:00,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 20:32:00,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:32:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:32:00,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:32:00,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:32:00,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973778331] [2023-11-06 20:32:00,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973778331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:32:00,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:32:00,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:32:00,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319115044] [2023-11-06 20:32:00,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:32:00,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 20:32:00,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:32:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 20:32:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:32:00,951 INFO L87 Difference]: Start difference. First operand has 1483 states, 717 states have (on average 2.2482566248256624) internal successors, (1612), 1474 states have internal predecessors, (1612), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:32:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:32:01,076 INFO L93 Difference]: Finished difference Result 1464 states and 1547 transitions. [2023-11-06 20:32:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 20:32:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-06 20:32:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:32:01,111 INFO L225 Difference]: With dead ends: 1464 [2023-11-06 20:32:01,111 INFO L226 Difference]: Without dead ends: 1462 [2023-11-06 20:32:01,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 20:32:01,118 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:32:01,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 20:32:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-11-06 20:32:01,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1462. [2023-11-06 20:32:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 707 states have (on average 2.14002828854314) internal successors, (1513), 1453 states have internal predecessors, (1513), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-06 20:32:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1545 transitions. [2023-11-06 20:32:01,311 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1545 transitions. Word has length 5 [2023-11-06 20:32:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:32:01,311 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 1545 transitions. [2023-11-06 20:32:01,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:32:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1545 transitions. [2023-11-06 20:32:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:32:01,314 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:01,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:32:01,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 20:32:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:32:01,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-06 20:32:01,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:01,516 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2023-11-06 20:32:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:32:01,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1507132574] [2023-11-06 20:32:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:01,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:32:01,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:32:01,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 20:32:01,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 20:32:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:32:01,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 20:32:01,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:32:01,793 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 20:32:01,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:32:01,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:32:01,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:32:01,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1507132574] [2023-11-06 20:32:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1507132574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:32:01,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:32:01,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:32:01,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331281747] [2023-11-06 20:32:01,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:32:01,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:32:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:32:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:32:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:32:01,820 INFO L87 Difference]: Start difference. First operand 1462 states and 1545 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:32:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:32:05,369 INFO L93 Difference]: Finished difference Result 1506 states and 1602 transitions. [2023-11-06 20:32:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:32:05,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-06 20:32:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:32:05,386 INFO L225 Difference]: With dead ends: 1506 [2023-11-06 20:32:05,386 INFO L226 Difference]: Without dead ends: 1506 [2023-11-06 20:32:05,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:32:05,388 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1163 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 20:32:05,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1032 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 20:32:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-11-06 20:32:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1449. [2023-11-06 20:32:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 787 states have (on average 1.9809402795425668) internal successors, (1559), 1440 states have internal predecessors, (1559), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-06 20:32:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1591 transitions. [2023-11-06 20:32:05,442 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1591 transitions. Word has length 5 [2023-11-06 20:32:05,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:32:05,443 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 1591 transitions. [2023-11-06 20:32:05,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:32:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1591 transitions. [2023-11-06 20:32:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 20:32:05,444 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:05,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 20:32:05,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 20:32:05,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:32:05,645 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-06 20:32:05,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:05,645 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2023-11-06 20:32:05,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:32:05,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458757105] [2023-11-06 20:32:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:32:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:32:05,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 20:32:05,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 20:32:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 20:32:05,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 20:32:05,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 20:32:05,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-06 20:32:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 20:32:05,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 20:32:05,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-06 20:32:05,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458757105] [2023-11-06 20:32:05,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458757105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 20:32:05,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 20:32:05,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 20:32:05,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839233432] [2023-11-06 20:32:05,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 20:32:05,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 20:32:05,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-06 20:32:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 20:32:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:32:05,857 INFO L87 Difference]: Start difference. First operand 1449 states and 1591 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:32:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 20:32:10,970 INFO L93 Difference]: Finished difference Result 1759 states and 1921 transitions. [2023-11-06 20:32:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 20:32:10,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-06 20:32:10,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 20:32:10,984 INFO L225 Difference]: With dead ends: 1759 [2023-11-06 20:32:10,984 INFO L226 Difference]: Without dead ends: 1759 [2023-11-06 20:32:10,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 20:32:10,986 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 512 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 20:32:10,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1809 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 20:32:10,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2023-11-06 20:32:11,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1609. [2023-11-06 20:32:11,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 957 states have (on average 1.9529780564263324) internal successors, (1869), 1600 states have internal predecessors, (1869), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-06 20:32:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 1901 transitions. [2023-11-06 20:32:11,038 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 1901 transitions. Word has length 5 [2023-11-06 20:32:11,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 20:32:11,039 INFO L495 AbstractCegarLoop]: Abstraction has 1609 states and 1901 transitions. [2023-11-06 20:32:11,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 20:32:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 1901 transitions. [2023-11-06 20:32:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 20:32:11,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 20:32:11,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 20:32:11,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 20:32:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:32:11,252 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 750 more)] === [2023-11-06 20:32:11,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 20:32:11,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1157605967, now seen corresponding path program 1 times [2023-11-06 20:32:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-06 20:32:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017906861] [2023-11-06 20:32:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 20:32:11,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 20:32:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat [2023-11-06 20:32:11,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 20:32:11,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55734deb-f170-452b-abca-870e457be9f5/bin/utaipan-verify-FOvIYxoinp/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process