./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh --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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:33:59,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:34:00,000 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 19:34:00,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:34:00,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:34:00,030 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:34:00,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:34:00,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:34:00,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:34:00,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:34:00,033 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:34:00,034 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:34:00,034 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:34:00,035 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:34:00,035 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:34:00,036 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:34:00,036 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:34:00,037 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:34:00,037 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:34:00,038 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:34:00,038 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:34:00,041 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:34:00,042 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 19:34:00,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 19:34:00,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:34:00,043 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:34:00,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:34:00,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:34:00,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:34:00,045 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 19:34:00,045 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 19:34:00,045 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 19:34:00,045 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:34:00,046 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:34:00,046 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:34:00,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:34:00,046 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:34:00,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:34:00,047 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:34:00,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:34:00,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:34:00,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:34:00,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:34:00,048 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:34:00,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:34:00,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:34:00,048 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:34:00,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:34:00,049 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_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2023-12-02 19:34:00,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:34:00,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:34:00,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:34:00,285 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:34:00,285 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:34:00,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-12-02 19:34:03,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:34:03,254 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:34:03,254 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-12-02 19:34:03,272 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data/e99ce1679/51a76d1f3de442feacdd2593e88c6b06/FLAG172f4e520 [2023-12-02 19:34:03,289 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data/e99ce1679/51a76d1f3de442feacdd2593e88c6b06 [2023-12-02 19:34:03,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:34:03,297 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:34:03,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:34:03,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:34:03,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:34:03,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:34:03" (1/1) ... [2023-12-02 19:34:03,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a6b40da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:03, skipping insertion in model container [2023-12-02 19:34:03,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:34:03" (1/1) ... [2023-12-02 19:34:03,361 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:34:03,786 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:03,786 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:03,787 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:03,787 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:03,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:34:03,829 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) [2023-12-02 19:34:03,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f1fea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:03, skipping insertion in model container [2023-12-02 19:34:03,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:34:03,830 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 19:34:03,832 INFO L158 Benchmark]: Toolchain (without parser) took 534.76ms. Allocated memory is still 134.2MB. Free memory was 94.4MB in the beginning and 78.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 19:34:03,833 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:34:03,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 529.95ms. Allocated memory is still 134.2MB. Free memory was 94.4MB in the beginning and 78.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 19:34:03,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 529.95ms. Allocated memory is still 134.2MB. Free memory was 94.4MB in the beginning and 78.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1044]: 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_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh --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 ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:34:05,574 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:34:05,657 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 19:34:05,662 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:34:05,662 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:34:05,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:34:05,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:34:05,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:34:05,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:34:05,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:34:05,693 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:34:05,693 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:34:05,694 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:34:05,694 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:34:05,695 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:34:05,695 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:34:05,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 19:34:05,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 19:34:05,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:34:05,698 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:34:05,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:34:05,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:34:05,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:34:05,700 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 19:34:05,701 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 19:34:05,701 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 19:34:05,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:34:05,702 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:34:05,702 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 19:34:05,703 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 19:34:05,703 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:34:05,703 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:34:05,704 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:34:05,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:34:05,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 19:34:05,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:34:05,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:34:05,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:34:05,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:34:05,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:34:05,706 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 19:34:05,706 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 19:34:05,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:34:05,706 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:34:05,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:34:05,707 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_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac583c9331a2ad916f4c22969f16915d9226d22c75c23a992e6ef02ec672d4b3 [2023-12-02 19:34:05,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:34:06,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:34:06,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:34:06,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:34:06,021 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:34:06,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-12-02 19:34:08,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:34:09,083 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:34:09,084 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/sv-benchmarks/c/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-12-02 19:34:09,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data/89dcba5d6/b3929379578a4af0b070be0f13011313/FLAG18dedbded [2023-12-02 19:34:09,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/data/89dcba5d6/b3929379578a4af0b070be0f13011313 [2023-12-02 19:34:09,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:34:09,124 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:34:09,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:34:09,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:34:09,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:34:09,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6917927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09, skipping insertion in model container [2023-12-02 19:34:09,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,192 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:34:09,679 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,680 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,680 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,681 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:34:09,727 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 19:34:09,742 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:34:09,772 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,773 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,773 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,774 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:34:09,793 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:34:09,826 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,827 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,827 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,828 WARN L1590 CHandler]: Possible shadowing of function new [2023-12-02 19:34:09,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:34:09,905 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:34:09,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09 WrapperNode [2023-12-02 19:34:09,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:34:09,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:34:09,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:34:09,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:34:09,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,965 INFO L138 Inliner]: procedures = 282, calls = 50, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 201 [2023-12-02 19:34:09,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:34:09,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:34:09,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:34:09,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:34:09,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:09,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:10,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:10,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:10,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:10,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:34:10,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:34:10,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:34:10,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:34:10,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (1/1) ... [2023-12-02 19:34:10,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:34:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:10,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:34:10,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:34:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 19:34:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:34:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:34:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:34:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 19:34:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 19:34:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 19:34:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 19:34:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 19:34:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:34:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:34:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:34:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-02 19:34:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-02 19:34:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:34:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:34:10,090 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 19:34:10,253 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:34:10,254 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:34:10,914 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:34:11,180 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:34:11,180 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-02 19:34:11,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:34:11 BoogieIcfgContainer [2023-12-02 19:34:11,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:34:11,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:34:11,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:34:11,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:34:11,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:34:09" (1/3) ... [2023-12-02 19:34:11,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a386684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:34:11, skipping insertion in model container [2023-12-02 19:34:11,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:34:09" (2/3) ... [2023-12-02 19:34:11,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a386684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:34:11, skipping insertion in model container [2023-12-02 19:34:11,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:34:11" (3/3) ... [2023-12-02 19:34:11,190 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-12-02 19:34:11,209 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:34:11,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 40 error locations. [2023-12-02 19:34:11,209 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 19:34:11,302 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-12-02 19:34:11,333 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 121 transitions, 249 flow [2023-12-02 19:34:11,412 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 871 states, 718 states have (on average 2.582172701949861) internal successors, (1854), 870 states have internal predecessors, (1854), 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) [2023-12-02 19:34:11,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:34:11,438 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;@53e9caf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:34:11,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-12-02 19:34:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 871 states, 718 states have (on average 2.582172701949861) internal successors, (1854), 870 states have internal predecessors, (1854), 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) [2023-12-02 19:34:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 19:34:11,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:11,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 19:34:11,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:11,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash 575116, now seen corresponding path program 1 times [2023-12-02 19:34:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965433379] [2023-12-02 19:34:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:11,463 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 [2023-12-02 19:34:11,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:11,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:11,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:11,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:34:11,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:11,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:11,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:11,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965433379] [2023-12-02 19:34:11,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965433379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:11,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:11,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:34:11,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046853498] [2023-12-02 19:34:11,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:11,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:34:11,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:11,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:34:11,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:11,670 INFO L87 Difference]: Start difference. First operand has 871 states, 718 states have (on average 2.582172701949861) internal successors, (1854), 870 states have internal predecessors, (1854), 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) Second operand has 4 states, 3 states have (on average 1.0) 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) [2023-12-02 19:34:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:12,198 INFO L93 Difference]: Finished difference Result 842 states and 1619 transitions. [2023-12-02 19:34:12,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:34:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2023-12-02 19:34:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:12,216 INFO L225 Difference]: With dead ends: 842 [2023-12-02 19:34:12,216 INFO L226 Difference]: Without dead ends: 840 [2023-12-02 19:34:12,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:34:12,221 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 102 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:12,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 96 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:34:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-12-02 19:34:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2023-12-02 19:34:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 697 states have (on average 2.3185078909612624) internal successors, (1616), 839 states have internal predecessors, (1616), 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) [2023-12-02 19:34:12,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1616 transitions. [2023-12-02 19:34:12,307 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1616 transitions. Word has length 3 [2023-12-02 19:34:12,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:12,307 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1616 transitions. [2023-12-02 19:34:12,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2023-12-02 19:34:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1616 transitions. [2023-12-02 19:34:12,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 19:34:12,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:12,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 19:34:12,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:12,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:12,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:12,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 575117, now seen corresponding path program 1 times [2023-12-02 19:34:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:12,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778689687] [2023-12-02 19:34:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:12,513 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 [2023-12-02 19:34:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:12,514 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:12,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:12,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:34:12,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:12,650 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:12,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:12,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778689687] [2023-12-02 19:34:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778689687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:34:12,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177146777] [2023-12-02 19:34:12,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:12,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:34:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:34:12,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:12,654 INFO L87 Difference]: Start difference. First operand 840 states and 1616 transitions. Second operand has 4 states, 3 states have (on average 1.0) 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) [2023-12-02 19:34:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:13,189 INFO L93 Difference]: Finished difference Result 844 states and 1621 transitions. [2023-12-02 19:34:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:34:13,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2023-12-02 19:34:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:13,196 INFO L225 Difference]: With dead ends: 844 [2023-12-02 19:34:13,196 INFO L226 Difference]: Without dead ends: 844 [2023-12-02 19:34:13,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:34:13,198 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:13,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 138 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:34:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2023-12-02 19:34:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 843. [2023-12-02 19:34:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 700 states have (on average 2.3128571428571427) internal successors, (1619), 842 states have internal predecessors, (1619), 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) [2023-12-02 19:34:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1619 transitions. [2023-12-02 19:34:13,230 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1619 transitions. Word has length 3 [2023-12-02 19:34:13,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:13,230 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1619 transitions. [2023-12-02 19:34:13,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2023-12-02 19:34:13,230 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1619 transitions. [2023-12-02 19:34:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 19:34:13,231 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:13,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 19:34:13,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 19:34:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:13,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:13,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash -46057764, now seen corresponding path program 1 times [2023-12-02 19:34:13,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758918778] [2023-12-02 19:34:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:13,434 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 [2023-12-02 19:34:13,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:13,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:13,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:13,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:34:13,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:13,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 19:34:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:13,587 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:13,587 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:13,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758918778] [2023-12-02 19:34:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758918778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:13,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:13,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:34:13,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121150888] [2023-12-02 19:34:13,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:13,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:34:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:13,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:34:13,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:34:13,590 INFO L87 Difference]: Start difference. First operand 843 states and 1619 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:13,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:13,837 INFO L93 Difference]: Finished difference Result 842 states and 1618 transitions. [2023-12-02 19:34:13,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:34:13,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 19:34:13,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:13,844 INFO L225 Difference]: With dead ends: 842 [2023-12-02 19:34:13,844 INFO L226 Difference]: Without dead ends: 842 [2023-12-02 19:34:13,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:34:13,846 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:13,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 97 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:34:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-12-02 19:34:13,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 842. [2023-12-02 19:34:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 700 states have (on average 2.3114285714285714) internal successors, (1618), 841 states have internal predecessors, (1618), 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) [2023-12-02 19:34:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1618 transitions. [2023-12-02 19:34:13,874 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1618 transitions. Word has length 6 [2023-12-02 19:34:13,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:13,875 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1618 transitions. [2023-12-02 19:34:13,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:13,875 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1618 transitions. [2023-12-02 19:34:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 19:34:13,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:13,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 19:34:13,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 19:34:14,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:14,076 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:14,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:14,077 INFO L85 PathProgramCache]: Analyzing trace with hash -46057763, now seen corresponding path program 1 times [2023-12-02 19:34:14,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:14,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090203146] [2023-12-02 19:34:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:14,078 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 [2023-12-02 19:34:14,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:14,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:14,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:14,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:34:14,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:14,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 19:34:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:14,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:14,180 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:14,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090203146] [2023-12-02 19:34:14,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090203146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:14,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:14,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:34:14,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144530503] [2023-12-02 19:34:14,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:14,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:34:14,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:34:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:34:14,182 INFO L87 Difference]: Start difference. First operand 842 states and 1618 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:14,532 INFO L93 Difference]: Finished difference Result 841 states and 1617 transitions. [2023-12-02 19:34:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:34:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 19:34:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:14,539 INFO L225 Difference]: With dead ends: 841 [2023-12-02 19:34:14,539 INFO L226 Difference]: Without dead ends: 841 [2023-12-02 19:34:14,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:34:14,541 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:14,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 96 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:34:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2023-12-02 19:34:14,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 841. [2023-12-02 19:34:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 700 states have (on average 2.31) internal successors, (1617), 840 states have internal predecessors, (1617), 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) [2023-12-02 19:34:14,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1617 transitions. [2023-12-02 19:34:14,569 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1617 transitions. Word has length 6 [2023-12-02 19:34:14,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:14,569 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1617 transitions. [2023-12-02 19:34:14,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1617 transitions. [2023-12-02 19:34:14,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 19:34:14,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:14,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:14,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 19:34:14,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:14,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:14,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:14,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1427790080, now seen corresponding path program 1 times [2023-12-02 19:34:14,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:14,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219284157] [2023-12-02 19:34:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:14,772 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 [2023-12-02 19:34:14,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:14,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:14,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:14,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:34:14,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:14,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 19:34:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:14,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:14,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:14,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219284157] [2023-12-02 19:34:14,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219284157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:14,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:14,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:34:14,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325355516] [2023-12-02 19:34:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:34:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:34:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:14,897 INFO L87 Difference]: Start difference. First operand 841 states and 1617 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) [2023-12-02 19:34:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:15,210 INFO L93 Difference]: Finished difference Result 839 states and 1615 transitions. [2023-12-02 19:34:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:34:15,210 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 [2023-12-02 19:34:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:15,222 INFO L225 Difference]: With dead ends: 839 [2023-12-02 19:34:15,223 INFO L226 Difference]: Without dead ends: 839 [2023-12-02 19:34:15,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:34:15,224 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:15,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 128 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:34:15,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2023-12-02 19:34:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2023-12-02 19:34:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 700 states have (on average 2.307142857142857) internal successors, (1615), 838 states have internal predecessors, (1615), 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) [2023-12-02 19:34:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1615 transitions. [2023-12-02 19:34:15,252 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1615 transitions. Word has length 7 [2023-12-02 19:34:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:15,252 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1615 transitions. [2023-12-02 19:34:15,252 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) [2023-12-02 19:34:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1615 transitions. [2023-12-02 19:34:15,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 19:34:15,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:15,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:15,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:15,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:15,456 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:15,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1427790079, now seen corresponding path program 1 times [2023-12-02 19:34:15,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:15,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166204250] [2023-12-02 19:34:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:15,457 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 [2023-12-02 19:34:15,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:15,458 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:15,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:15,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 19:34:15,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:15,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 19:34:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:15,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:15,605 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:15,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166204250] [2023-12-02 19:34:15,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166204250] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:15,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:15,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:34:15,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958026332] [2023-12-02 19:34:15,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:15,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:34:15,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:15,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:34:15,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:15,607 INFO L87 Difference]: Start difference. First operand 839 states and 1615 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) [2023-12-02 19:34:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:16,008 INFO L93 Difference]: Finished difference Result 837 states and 1613 transitions. [2023-12-02 19:34:16,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:34:16,009 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 [2023-12-02 19:34:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:16,015 INFO L225 Difference]: With dead ends: 837 [2023-12-02 19:34:16,015 INFO L226 Difference]: Without dead ends: 837 [2023-12-02 19:34:16,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:34:16,016 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:16,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 130 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:34:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2023-12-02 19:34:16,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 837. [2023-12-02 19:34:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 700 states have (on average 2.3042857142857143) internal successors, (1613), 836 states have internal predecessors, (1613), 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) [2023-12-02 19:34:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1613 transitions. [2023-12-02 19:34:16,040 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1613 transitions. Word has length 7 [2023-12-02 19:34:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:16,040 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1613 transitions. [2023-12-02 19:34:16,041 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) [2023-12-02 19:34:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1613 transitions. [2023-12-02 19:34:16,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 19:34:16,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:16,041 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 19:34:16,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 19:34:16,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:16,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:16,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1427788509, now seen corresponding path program 1 times [2023-12-02 19:34:16,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241048893] [2023-12-02 19:34:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:16,246 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 [2023-12-02 19:34:16,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:16,247 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:16,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:16,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 19:34:16,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:16,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:16,324 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:16,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241048893] [2023-12-02 19:34:16,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241048893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:16,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:16,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:34:16,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572057290] [2023-12-02 19:34:16,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:16,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 19:34:16,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:16,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 19:34:16,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:34:16,326 INFO L87 Difference]: Start difference. First operand 837 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:16,490 INFO L93 Difference]: Finished difference Result 856 states and 1632 transitions. [2023-12-02 19:34:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 19:34:16,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 19:34:16,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:16,494 INFO L225 Difference]: With dead ends: 856 [2023-12-02 19:34:16,494 INFO L226 Difference]: Without dead ends: 856 [2023-12-02 19:34:16,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 19:34:16,495 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 18 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:16,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:34:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2023-12-02 19:34:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 838. [2023-12-02 19:34:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 701 states have (on average 2.302425106990014) internal successors, (1614), 837 states have internal predecessors, (1614), 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) [2023-12-02 19:34:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1614 transitions. [2023-12-02 19:34:16,526 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1614 transitions. Word has length 7 [2023-12-02 19:34:16,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:16,527 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1614 transitions. [2023-12-02 19:34:16,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1614 transitions. [2023-12-02 19:34:16,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 19:34:16,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:16,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:16,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 19:34:16,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:16,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:16,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:16,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2011680557, now seen corresponding path program 1 times [2023-12-02 19:34:16,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:16,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911988004] [2023-12-02 19:34:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:16,732 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 [2023-12-02 19:34:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:16,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:16,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:16,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 19:34:16,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:17,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 19:34:17,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 19:34:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:17,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:17,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911988004] [2023-12-02 19:34:17,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911988004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:17,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:17,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:34:17,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188426600] [2023-12-02 19:34:17,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:17,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:34:17,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:34:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:34:17,102 INFO L87 Difference]: Start difference. First operand 838 states and 1614 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-02 19:34:17,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:17,605 INFO L93 Difference]: Finished difference Result 854 states and 1631 transitions. [2023-12-02 19:34:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:34:17,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-12-02 19:34:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:17,609 INFO L225 Difference]: With dead ends: 854 [2023-12-02 19:34:17,609 INFO L226 Difference]: Without dead ends: 854 [2023-12-02 19:34:17,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:34:17,610 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 36 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:17,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 116 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 19:34:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-12-02 19:34:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 848. [2023-12-02 19:34:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 711 states have (on average 2.2939521800281293) internal successors, (1631), 847 states have internal predecessors, (1631), 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) [2023-12-02 19:34:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1631 transitions. [2023-12-02 19:34:17,625 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1631 transitions. Word has length 9 [2023-12-02 19:34:17,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:17,625 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1631 transitions. [2023-12-02 19:34:17,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-02 19:34:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1631 transitions. [2023-12-02 19:34:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:34:17,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:17,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:17,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 19:34:17,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:17,826 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:17,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2062412800, now seen corresponding path program 1 times [2023-12-02 19:34:17,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:17,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531514610] [2023-12-02 19:34:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:17,828 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 [2023-12-02 19:34:17,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:17,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:17,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:18,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 19:34:18,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:18,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:34:18,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 15 [2023-12-02 19:34:18,282 INFO L349 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2023-12-02 19:34:18,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 16 [2023-12-02 19:34:18,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2023-12-02 19:34:18,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2023-12-02 19:34:18,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2023-12-02 19:34:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:18,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:18,483 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531514610] [2023-12-02 19:34:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531514610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:18,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:18,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 19:34:18,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772392556] [2023-12-02 19:34:18,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:18,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:34:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:18,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:34:18,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:34:18,485 INFO L87 Difference]: Start difference. First operand 848 states and 1631 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:19,787 INFO L93 Difference]: Finished difference Result 872 states and 1660 transitions. [2023-12-02 19:34:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:34:19,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 19:34:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:19,793 INFO L225 Difference]: With dead ends: 872 [2023-12-02 19:34:19,793 INFO L226 Difference]: Without dead ends: 872 [2023-12-02 19:34:19,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-12-02 19:34:19,794 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 118 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:19,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 249 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:34:19,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-12-02 19:34:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 858. [2023-12-02 19:34:19,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 721 states have (on average 2.280166435506241) internal successors, (1644), 857 states have internal predecessors, (1644), 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) [2023-12-02 19:34:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1644 transitions. [2023-12-02 19:34:19,810 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1644 transitions. Word has length 10 [2023-12-02 19:34:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:19,810 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1644 transitions. [2023-12-02 19:34:19,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1644 transitions. [2023-12-02 19:34:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 19:34:19,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:19,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:19,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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)] Forceful destruction successful, exit code 0 [2023-12-02 19:34:20,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:20,012 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:20,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:20,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2062412801, now seen corresponding path program 1 times [2023-12-02 19:34:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:20,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166856696] [2023-12-02 19:34:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:20,013 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 [2023-12-02 19:34:20,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:20,013 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:20,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:20,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 19:34:20,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:20,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:34:20,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 19:34:20,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-12-02 19:34:20,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2023-12-02 19:34:20,529 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 19:34:20,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-12-02 19:34:20,552 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 19:34:20,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 19:34:20,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2023-12-02 19:34:20,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2023-12-02 19:34:20,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2023-12-02 19:34:20,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2023-12-02 19:34:20,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 16 [2023-12-02 19:34:20,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2023-12-02 19:34:20,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:20,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:20,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:20,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166856696] [2023-12-02 19:34:20,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166856696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:20,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:20,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 19:34:20,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502791222] [2023-12-02 19:34:20,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:20,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 19:34:20,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 19:34:20,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-02 19:34:20,859 INFO L87 Difference]: Start difference. First operand 858 states and 1644 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:22,180 INFO L93 Difference]: Finished difference Result 871 states and 1650 transitions. [2023-12-02 19:34:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 19:34:22,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 19:34:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:22,184 INFO L225 Difference]: With dead ends: 871 [2023-12-02 19:34:22,184 INFO L226 Difference]: Without dead ends: 871 [2023-12-02 19:34:22,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-12-02 19:34:22,185 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 31 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:22,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 234 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 19:34:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-02 19:34:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 858. [2023-12-02 19:34:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 721 states have (on average 2.27877947295423) internal successors, (1643), 857 states have internal predecessors, (1643), 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) [2023-12-02 19:34:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1643 transitions. [2023-12-02 19:34:22,200 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1643 transitions. Word has length 10 [2023-12-02 19:34:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:22,200 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1643 transitions. [2023-12-02 19:34:22,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:34:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1643 transitions. [2023-12-02 19:34:22,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 19:34:22,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:22,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:22,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 19:34:22,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:22,402 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:22,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash -489712091, now seen corresponding path program 1 times [2023-12-02 19:34:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:22,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676284286] [2023-12-02 19:34:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:22,402 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 [2023-12-02 19:34:22,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:22,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:22,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:22,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:34:22,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:22,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 19:34:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:22,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:22,552 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:22,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676284286] [2023-12-02 19:34:22,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676284286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:22,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:22,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:34:22,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905268407] [2023-12-02 19:34:22,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:22,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:34:22,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:22,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:34:22,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:22,553 INFO L87 Difference]: Start difference. First operand 858 states and 1643 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-12-02 19:34:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:22,816 INFO L93 Difference]: Finished difference Result 856 states and 1639 transitions. [2023-12-02 19:34:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:34:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-12-02 19:34:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:22,821 INFO L225 Difference]: With dead ends: 856 [2023-12-02 19:34:22,821 INFO L226 Difference]: Without dead ends: 856 [2023-12-02 19:34:22,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:22,822 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:22,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 115 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:34:22,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2023-12-02 19:34:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2023-12-02 19:34:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 721 states have (on average 2.2732316227461857) internal successors, (1639), 855 states have internal predecessors, (1639), 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) [2023-12-02 19:34:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1639 transitions. [2023-12-02 19:34:22,837 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1639 transitions. Word has length 11 [2023-12-02 19:34:22,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:22,837 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1639 transitions. [2023-12-02 19:34:22,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-12-02 19:34:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1639 transitions. [2023-12-02 19:34:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 19:34:22,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:22,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:22,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:23,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:23,042 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:23,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash -489712090, now seen corresponding path program 1 times [2023-12-02 19:34:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:23,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997405822] [2023-12-02 19:34:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:23,043 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 [2023-12-02 19:34:23,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:23,043 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:23,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:23,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:34:23,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:23,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 19:34:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:23,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:34:23,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:23,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997405822] [2023-12-02 19:34:23,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997405822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:34:23,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:34:23,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:34:23,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491737905] [2023-12-02 19:34:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:34:23,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:34:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:34:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:23,216 INFO L87 Difference]: Start difference. First operand 856 states and 1639 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-12-02 19:34:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:23,559 INFO L93 Difference]: Finished difference Result 854 states and 1635 transitions. [2023-12-02 19:34:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:34:23,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-12-02 19:34:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:23,563 INFO L225 Difference]: With dead ends: 854 [2023-12-02 19:34:23,563 INFO L226 Difference]: Without dead ends: 854 [2023-12-02 19:34:23,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:34:23,564 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:23,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:34:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-12-02 19:34:23,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 854. [2023-12-02 19:34:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 721 states have (on average 2.2676837725381414) internal successors, (1635), 853 states have internal predecessors, (1635), 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) [2023-12-02 19:34:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1635 transitions. [2023-12-02 19:34:23,582 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1635 transitions. Word has length 11 [2023-12-02 19:34:23,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:23,583 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1635 transitions. [2023-12-02 19:34:23,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-12-02 19:34:23,583 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1635 transitions. [2023-12-02 19:34:23,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 19:34:23,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:23,584 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:23,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 19:34:23,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:23,784 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:23,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:23,785 INFO L85 PathProgramCache]: Analyzing trace with hash -580765299, now seen corresponding path program 1 times [2023-12-02 19:34:23,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:23,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873396558] [2023-12-02 19:34:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:23,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:34:23,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:23,786 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:23,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:34:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:23,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:34:23,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:23,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:23,996 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873396558] [2023-12-02 19:34:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873396558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1547719597] [2023-12-02 19:34:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:23,997 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:34:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:34:23,998 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:34:24,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-02 19:34:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:24,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:34:24,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:24,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:24,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1547719597] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:24,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288658764] [2023-12-02 19:34:24,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:24,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:24,274 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:34:24,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 19:34:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:24,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:34:24,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:24,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:24,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288658764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:24,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:34:24,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2023-12-02 19:34:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226149052] [2023-12-02 19:34:24,459 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:34:24,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:34:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:34:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 19:34:24,459 INFO L87 Difference]: Start difference. First operand 854 states and 1635 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-12-02 19:34:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:24,808 INFO L93 Difference]: Finished difference Result 914 states and 1697 transitions. [2023-12-02 19:34:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:34:24,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 [2023-12-02 19:34:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:24,814 INFO L225 Difference]: With dead ends: 914 [2023-12-02 19:34:24,814 INFO L226 Difference]: Without dead ends: 914 [2023-12-02 19:34:24,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:34:24,814 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 52 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:24,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 274 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 19:34:24,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-12-02 19:34:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 898. [2023-12-02 19:34:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 765 states have (on average 2.2183006535947714) internal successors, (1697), 897 states have internal predecessors, (1697), 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) [2023-12-02 19:34:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1697 transitions. [2023-12-02 19:34:24,832 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1697 transitions. Word has length 16 [2023-12-02 19:34:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1697 transitions. [2023-12-02 19:34:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-12-02 19:34:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1697 transitions. [2023-12-02 19:34:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:34:24,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:24,833 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:24,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 19:34:25,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 19:34:25,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2023-12-02 19:34:25,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 19:34:25,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:25,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1496969386, now seen corresponding path program 1 times [2023-12-02 19:34:25,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:25,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691366492] [2023-12-02 19:34:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:25,435 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 [2023-12-02 19:34:25,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:25,436 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:25,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 (17)] Waiting until timeout for monitored process [2023-12-02 19:34:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:25,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 19:34:25,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:25,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 19:34:25,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 19:34:25,977 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2023-12-02 19:34:25,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2023-12-02 19:34:26,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2023-12-02 19:34:26,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2023-12-02 19:34:26,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 21 [2023-12-02 19:34:26,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-02 19:34:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:26,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:26,311 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_714) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (_ bv1 1)))) is different from false [2023-12-02 19:34:26,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:26,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-12-02 19:34:26,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:26,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2023-12-02 19:34:26,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2023-12-02 19:34:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-02 19:34:28,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691366492] [2023-12-02 19:34:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691366492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2098584441] [2023-12-02 19:34:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:28,131 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:34:28,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:34:28,132 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:34:28,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 19:34:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:29,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 19:34:29,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:29,352 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 19:34:29,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 19:34:29,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 19:34:29,804 INFO L349 Elim1Store]: treesize reduction 132, result has 27.5 percent of original size [2023-12-02 19:34:29,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 43 treesize of output 68 [2023-12-02 19:34:29,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-02 19:34:30,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-02 19:34:30,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2023-12-02 19:34:30,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-02 19:34:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:30,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:30,235 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_820 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_820) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (_ bv1 1)))) is different from false [2023-12-02 19:34:30,372 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_817 (_ BitVec 1)) (|v_ULTIMATE.start_new_~p~0#1.base_54| (_ BitVec 32)) (v_ArrVal_820 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (bvadd (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_54| v_ArrVal_817) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_new_~p~0#1.base_54| v_ArrVal_820) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (_ bv1 1)) (_ bv0 1)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_54|))))) is different from false [2023-12-02 19:34:30,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:30,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-12-02 19:34:30,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:30,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2023-12-02 19:34:30,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2023-12-02 19:34:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-02 19:34:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2098584441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090836272] [2023-12-02 19:34:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:31,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:31,607 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:34:31,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 19:34:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:31,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 19:34:31,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:32,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 19:34:32,080 INFO L349 Elim1Store]: treesize reduction 90, result has 30.2 percent of original size [2023-12-02 19:34:32,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 52 [2023-12-02 19:34:32,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2023-12-02 19:34:32,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 29 [2023-12-02 19:34:32,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 21 [2023-12-02 19:34:32,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-02 19:34:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:32,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:32,258 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_new_~p~0#1.base_56| (_ BitVec 32)) (v_ArrVal_714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_922 (_ BitVec 1))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_56|) (_ bv0 1))) (= (bvadd (select (store |c_#valid| |v_ULTIMATE.start_new_~p~0#1.base_56| v_ArrVal_922) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_new_~p~0#1.base_56| v_ArrVal_714) |c_~#c~0.base|) (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (_ bv1 1)) (_ bv0 1)))) is different from false [2023-12-02 19:34:32,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:32,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-12-02 19:34:32,288 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:32,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 55 [2023-12-02 19:34:32,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2023-12-02 19:34:37,916 INFO L349 Elim1Store]: treesize reduction 7, result has 96.7 percent of original size [2023-12-02 19:34:37,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 290 [2023-12-02 19:34:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:38,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090836272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:38,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:34:38,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 10, 10] total 32 [2023-12-02 19:34:38,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555407270] [2023-12-02 19:34:38,435 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:34:38,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 19:34:38,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 19:34:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=697, Unknown=18, NotChecked=228, Total=1056 [2023-12-02 19:34:38,437 INFO L87 Difference]: Start difference. First operand 898 states and 1697 transitions. Second operand has 33 states, 32 states have (on average 2.40625) internal successors, (77), 33 states have internal predecessors, (77), 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) [2023-12-02 19:34:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:34:41,629 INFO L93 Difference]: Finished difference Result 898 states and 1684 transitions. [2023-12-02 19:34:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 19:34:41,630 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.40625) internal successors, (77), 33 states have internal predecessors, (77), 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 19 [2023-12-02 19:34:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:34:41,636 INFO L225 Difference]: With dead ends: 898 [2023-12-02 19:34:41,636 INFO L226 Difference]: Without dead ends: 898 [2023-12-02 19:34:41,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=200, Invalid=988, Unknown=18, NotChecked=276, Total=1482 [2023-12-02 19:34:41,637 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 113 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 545 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 19:34:41,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 570 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1067 Invalid, 0 Unknown, 545 Unchecked, 2.7s Time] [2023-12-02 19:34:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-02 19:34:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 895. [2023-12-02 19:34:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 765 states have (on average 2.201307189542484) internal successors, (1684), 894 states have internal predecessors, (1684), 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) [2023-12-02 19:34:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1684 transitions. [2023-12-02 19:34:41,658 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1684 transitions. Word has length 19 [2023-12-02 19:34:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:34:41,658 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1684 transitions. [2023-12-02 19:34:41,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.40625) internal successors, (77), 33 states have internal predecessors, (77), 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) [2023-12-02 19:34:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1684 transitions. [2023-12-02 19:34:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 19:34:41,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:34:41,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:34:41,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 (17)] Forceful destruction successful, exit code 0 [2023-12-02 19:34:41,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-12-02 19:34:42,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 19:34:42,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:42,260 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:34:42,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:34:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1496969385, now seen corresponding path program 1 times [2023-12-02 19:34:42,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:34:42,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990130131] [2023-12-02 19:34:42,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:42,261 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 [2023-12-02 19:34:42,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:34:42,262 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:34:42,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 (20)] Waiting until timeout for monitored process [2023-12-02 19:34:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:42,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 19:34:42,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:42,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 19:34:42,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 19:34:42,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 19:34:42,821 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 19:34:42,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 19:34:42,847 INFO L349 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2023-12-02 19:34:42,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2023-12-02 19:34:42,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2023-12-02 19:34:42,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 17 [2023-12-02 19:34:42,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2023-12-02 19:34:42,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 17 [2023-12-02 19:34:43,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 13 [2023-12-02 19:34:43,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 16 treesize of output 11 [2023-12-02 19:34:43,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 17 treesize of output 9 [2023-12-02 19:34:43,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-12-02 19:34:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:43,123 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:43,290 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1035 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1035) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1034) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1035) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 19:34:43,343 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1035 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1035) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1034) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1035) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 19:34:43,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:43,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 109 [2023-12-02 19:34:43,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:43,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 85 [2023-12-02 19:34:43,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:43,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 118 treesize of output 121 [2023-12-02 19:34:43,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:43,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 184 treesize of output 163 [2023-12-02 19:34:43,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 85 [2023-12-02 19:34:43,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 79 [2023-12-02 19:34:43,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:43,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 112 [2023-12-02 19:34:43,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63 [2023-12-02 19:34:45,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-12-02 19:34:45,769 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:34:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990130131] [2023-12-02 19:34:45,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990130131] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:45,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [89276981] [2023-12-02 19:34:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:45,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:34:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:34:45,770 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:34:45,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 19:34:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:47,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-02 19:34:47,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:47,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 19:34:47,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 19:34:47,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 19:34:47,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 19:34:47,775 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-12-02 19:34:47,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29 [2023-12-02 19:34:47,814 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2023-12-02 19:34:47,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-12-02 19:34:47,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2023-12-02 19:34:47,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-02 19:34:48,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2023-12-02 19:34:48,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2023-12-02 19:34:48,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2023-12-02 19:34:48,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 19:34:48,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 19:34:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:48,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:48,343 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1147) |c_~#c~0.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1147 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1147) |c_~#c~0.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1146) |c_~#c~0.base|) .cse1)))))) is different from false [2023-12-02 19:34:48,395 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1147 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1147) |c_~#c~0.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1146) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1147) |c_~#c~0.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-12-02 19:34:49,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:49,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2023-12-02 19:34:49,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:49,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 55 [2023-12-02 19:34:49,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 19:34:49,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:49,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2023-12-02 19:34:49,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:49,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2023-12-02 19:34:49,230 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:34:49,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:49,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 38 treesize of output 41 [2023-12-02 19:34:49,261 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:34:49,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:49,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 30 [2023-12-02 19:34:50,773 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:34:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-12-02 19:34:50,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [89276981] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:50,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885315953] [2023-12-02 19:34:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:34:50,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:34:50,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:34:50,775 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:34:50,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 19:34:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:34:50,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 19:34:50,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:34:50,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 19:34:51,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 19:34:51,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-02 19:34:51,705 INFO L349 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2023-12-02 19:34:51,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 29 [2023-12-02 19:34:51,748 INFO L349 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2023-12-02 19:34:51,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2023-12-02 19:34:51,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2023-12-02 19:34:51,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-02 19:34:52,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 15 [2023-12-02 19:34:52,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 27 [2023-12-02 19:34:52,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 26 treesize of output 19 [2023-12-02 19:34:52,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 19:34:52,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 19:34:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:34:52,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:34:52,244 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1257 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1256) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1257) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1256 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_INIT_LIST_HEAD_~list#1.base| v_ArrVal_1256) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 19:34:52,298 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_~#c~0.offset| (bvmul (_ bv8 32) |c_ULTIMATE.start_main_~i~0#1|)))) (and (forall ((v_ArrVal_1256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1257 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1256) |c_~#c~0.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1257) |c_~#c~0.base|) .cse0)))) (forall ((v_ArrVal_1256 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_new_~p~0#1.base| v_ArrVal_1256) |c_~#c~0.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 19:34:53,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:53,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 49 [2023-12-02 19:34:53,601 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:53,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2023-12-02 19:34:53,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:53,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 74 treesize of output 77 [2023-12-02 19:34:53,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:53,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 118 treesize of output 113 [2023-12-02 19:34:53,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-12-02 19:34:53,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2023-12-02 19:34:54,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:54,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 38 [2023-12-02 19:34:54,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:34:54,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 60 treesize of output 55 [2023-12-02 19:34:54,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 19:34:57,616 INFO L349 Elim1Store]: treesize reduction 10, result has 83.6 percent of original size [2023-12-02 19:34:57,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 49 treesize of output 91 [2023-12-02 19:34:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-12-02 19:34:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885315953] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:34:58,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:34:58,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 11, 11] total 44 [2023-12-02 19:34:58,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908946171] [2023-12-02 19:34:58,480 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:34:58,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-02 19:34:58,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:34:58,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-02 19:34:58,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1337, Unknown=14, NotChecked=474, Total=1980 [2023-12-02 19:34:58,482 INFO L87 Difference]: Start difference. First operand 895 states and 1684 transitions. Second operand has 45 states, 44 states have (on average 2.090909090909091) internal successors, (92), 45 states have internal predecessors, (92), 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) [2023-12-02 19:35:07,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:35:07,933 INFO L93 Difference]: Finished difference Result 897 states and 1678 transitions. [2023-12-02 19:35:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 19:35:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.090909090909091) internal successors, (92), 45 states have internal predecessors, (92), 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 19 [2023-12-02 19:35:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:35:07,939 INFO L225 Difference]: With dead ends: 897 [2023-12-02 19:35:07,939 INFO L226 Difference]: Without dead ends: 897 [2023-12-02 19:35:07,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 6 IntricatePredicates, 1 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=318, Invalid=1948, Unknown=14, NotChecked=582, Total=2862 [2023-12-02 19:35:07,940 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 121 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 627 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:35:07,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 501 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1387 Invalid, 0 Unknown, 627 Unchecked, 8.0s Time] [2023-12-02 19:35:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-02 19:35:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 895. [2023-12-02 19:35:07,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 765 states have (on average 2.193464052287582) internal successors, (1678), 894 states have internal predecessors, (1678), 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) [2023-12-02 19:35:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1678 transitions. [2023-12-02 19:35:07,954 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1678 transitions. Word has length 19 [2023-12-02 19:35:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:35:07,954 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1678 transitions. [2023-12-02 19:35:07,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.090909090909091) internal successors, (92), 45 states have internal predecessors, (92), 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) [2023-12-02 19:35:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1678 transitions. [2023-12-02 19:35:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 19:35:07,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:35:07,955 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1] [2023-12-02 19:35:07,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2023-12-02 19:35:08,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 19:35:08,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 (20)] Ended with exit code 0 [2023-12-02 19:35:08,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 19:35:08,556 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:35:08,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:35:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1899820125, now seen corresponding path program 2 times [2023-12-02 19:35:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:35:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549742388] [2023-12-02 19:35:08,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:35:08,557 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 [2023-12-02 19:35:08,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:35:08,558 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:35:08,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 (23)] Waiting until timeout for monitored process [2023-12-02 19:35:09,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:35:09,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:35:09,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:35:09,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:35:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:09,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:35:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:09,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:35:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549742388] [2023-12-02 19:35:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549742388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:35:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2096099960] [2023-12-02 19:35:09,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:35:09,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:35:09,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:35:09,473 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:35:09,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 19:35:10,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:35:10,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:35:10,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:35:10,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:35:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:10,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:35:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2096099960] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:35:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141711204] [2023-12-02 19:35:10,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:35:10,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:35:10,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:35:10,380 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:35:10,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 19:35:10,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:35:10,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:35:10,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:35:10,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:35:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:10,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:35:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141711204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:35:10,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:35:10,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2023-12-02 19:35:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739021259] [2023-12-02 19:35:10,902 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:35:10,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 19:35:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:35:10,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 19:35:10,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-02 19:35:10,903 INFO L87 Difference]: Start difference. First operand 895 states and 1678 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 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) [2023-12-02 19:35:11,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:35:11,886 INFO L93 Difference]: Finished difference Result 1021 states and 1798 transitions. [2023-12-02 19:35:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 19:35:11,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 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 43 [2023-12-02 19:35:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:35:11,891 INFO L225 Difference]: With dead ends: 1021 [2023-12-02 19:35:11,891 INFO L226 Difference]: Without dead ends: 1021 [2023-12-02 19:35:11,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-02 19:35:11,892 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 114 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:35:11,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 449 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 19:35:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2023-12-02 19:35:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1003. [2023-12-02 19:35:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 873 states have (on average 2.0595647193585336) internal successors, (1798), 1002 states have internal predecessors, (1798), 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) [2023-12-02 19:35:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1798 transitions. [2023-12-02 19:35:11,910 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1798 transitions. Word has length 43 [2023-12-02 19:35:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:35:11,910 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1798 transitions. [2023-12-02 19:35:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 12 states have internal predecessors, (81), 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) [2023-12-02 19:35:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1798 transitions. [2023-12-02 19:35:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-02 19:35:11,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:35:11,913 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1] [2023-12-02 19:35:11,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 (23)] Ended with exit code 0 [2023-12-02 19:35:12,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-02 19:35:12,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 19:35:12,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:35:12,514 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-12-02 19:35:12,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:35:12,514 INFO L85 PathProgramCache]: Analyzing trace with hash -806076061, now seen corresponding path program 3 times [2023-12-02 19:35:12,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:35:12,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049844586] [2023-12-02 19:35:12,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:35:12,515 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 [2023-12-02 19:35:12,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:35:12,516 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 19:35:12,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/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 (26)] Waiting until timeout for monitored process [2023-12-02 19:35:25,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-02 19:35:25,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:35:26,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 19:35:26,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:35:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:26,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:35:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:35:26,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:35:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049844586] [2023-12-02 19:35:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049844586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:35:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [586425112] [2023-12-02 19:35:26,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:35:26,747 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:35:26,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:35:26,748 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:35:26,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2023-12-02 19:39:31,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-02 19:39:31,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:39:32,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:39:32,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:39:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:32,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:39:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 2 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:39:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [586425112] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:39:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427465613] [2023-12-02 19:39:33,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:39:33,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:39:33,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:39:33,477 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:39:33,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa625c8e-8601-4996-b166-c4292436d4a9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process