./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire --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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:32,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:32,982 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:31:32,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:32,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:33,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:33,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:33,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:33,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:33,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:33,037 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:33,038 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:33,039 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:33,039 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:31:33,040 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:33,041 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:33,041 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:31:33,042 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:31:33,043 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:33,043 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:31:33,044 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:31:33,045 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:31:33,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:31:33,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:31:33,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:33,048 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:33,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:31:33,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:33,049 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:33,050 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:31:33,051 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:31:33,051 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:31:33,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:33,052 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:31:33,052 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:31:33,053 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:33,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:33,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:33,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:33,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:33,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:33,055 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:33,055 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:33,055 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:31:33,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:31:33,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:33,056 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:33,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:33,056 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_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2023-11-23 21:31:33,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:33,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:33,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:33,432 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:33,433 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:33,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:31:36,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:37,016 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:37,019 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:31:37,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data/194657675/478d203593b8402f8170240070fc58ba/FLAGfb1b84564 [2023-11-23 21:31:37,072 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data/194657675/478d203593b8402f8170240070fc58ba [2023-11-23 21:31:37,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:37,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:37,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:37,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:37,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:37,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:37" (1/1) ... [2023-11-23 21:31:37,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a37845b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:37, skipping insertion in model container [2023-11-23 21:31:37,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:37" (1/1) ... [2023-11-23 21:31:37,205 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:37,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:37,790 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 21:31:37,791 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e40a63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:37, skipping insertion in model container [2023-11-23 21:31:37,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:37,800 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:31:37,804 INFO L158 Benchmark]: Toolchain (without parser) took 725.49ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 65.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:31:37,805 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:31:37,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 722.66ms. Allocated memory is still 134.2MB. Free memory was 85.7MB in the beginning and 65.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:31:37,808 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 722.66ms. Allocated memory is still 134.2MB. Free memory was 85.7MB in the beginning and 65.7MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3904]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire --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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:40,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:40,677 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:31:40,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:40,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:40,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:40,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:40,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:40,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:40,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:40,746 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:40,746 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:40,747 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:40,749 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:40,750 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:40,750 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:40,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:31:40,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:31:40,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:40,754 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:40,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:31:40,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:40,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:40,756 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:31:40,757 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:31:40,758 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:31:40,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:40,759 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:31:40,759 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:31:40,760 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:31:40,762 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:31:40,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:40,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:40,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:40,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:31:40,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:40,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:40,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:40,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:40,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:40,765 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:31:40,766 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:31:40,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:40,766 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:40,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:40,767 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_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2023-11-23 21:31:41,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:41,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:41,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:41,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:41,297 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:41,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:31:44,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:45,195 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:45,199 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:31:45,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data/317489d4a/2c2a8220623d42d3917b2f2433557216/FLAG2fb8b535c [2023-11-23 21:31:45,282 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/data/317489d4a/2c2a8220623d42d3917b2f2433557216 [2023-11-23 21:31:45,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:45,286 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:45,287 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:45,288 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:45,292 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:45,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:45" (1/1) ... [2023-11-23 21:31:45,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@262bb383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:45, skipping insertion in model container [2023-11-23 21:31:45,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:45" (1/1) ... [2023-11-23 21:31:45,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:45,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:46,001 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:31:46,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:46,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:46,130 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:46,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:46,283 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:31:46,283 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:31:46,291 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:46,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46 WrapperNode [2023-11-23 21:31:46,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:46,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:46,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:46,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:46,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,366 INFO L138 Inliner]: procedures = 250, calls = 52, calls flagged for inlining = 13, calls inlined = 18, statements flattened = 151 [2023-11-23 21:31:46,366 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:46,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:46,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:46,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:46,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,399 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:46,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:46,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:46,421 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:46,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (1/1) ... [2023-11-23 21:31:46,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:46,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:46,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:46,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:31:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-23 21:31:46,529 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-23 21:31:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:31:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:31:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:31:46,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:31:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:31:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-11-23 21:31:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:31:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:31:46,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:46,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:46,532 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:31:46,855 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:46,858 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:47,655 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:47,949 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:47,950 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:31:47,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:47 BoogieIcfgContainer [2023-11-23 21:31:47,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:47,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:47,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:47,959 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:47,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:45" (1/3) ... [2023-11-23 21:31:47,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2f3fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:47, skipping insertion in model container [2023-11-23 21:31:47,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:46" (2/3) ... [2023-11-23 21:31:47,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2f3fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:47, skipping insertion in model container [2023-11-23 21:31:47,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:47" (3/3) ... [2023-11-23 21:31:47,966 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-11-23 21:31:47,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:47,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-23 21:31:47,987 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:31:48,099 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:31:48,146 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 130 places, 138 transitions, 290 flow [2023-11-23 21:31:48,506 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5414 states, 4604 states have (on average 3.365768896611642) internal successors, (15496), 5413 states have internal predecessors, (15496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:48,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:48,544 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;@49de94ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:48,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-23 21:31:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 5414 states, 4604 states have (on average 3.365768896611642) internal successors, (15496), 5413 states have internal predecessors, (15496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:48,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:31:48,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:48,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:31:48,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:48,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 518871, now seen corresponding path program 1 times [2023-11-23 21:31:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:48,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561275207] [2023-11-23 21:31:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:48,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:48,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:48,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:31:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:48,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:31:48,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:48,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:31:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:48,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:48,936 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:48,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561275207] [2023-11-23 21:31:48,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561275207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:48,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:48,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334462011] [2023-11-23 21:31:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:48,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:49,003 INFO L87 Difference]: Start difference. First operand has 5414 states, 4604 states have (on average 3.365768896611642) internal successors, (15496), 5413 states have internal predecessors, (15496), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:49,684 INFO L93 Difference]: Finished difference Result 5116 states and 14082 transitions. [2023-11-23 21:31:49,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:49,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 21:31:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:49,764 INFO L225 Difference]: With dead ends: 5116 [2023-11-23 21:31:49,764 INFO L226 Difference]: Without dead ends: 5111 [2023-11-23 21:31:49,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:49,774 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 52 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:49,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 73 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:31:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5111 states. [2023-11-23 21:31:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5111 to 5111. [2023-11-23 21:31:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 4307 states have (on average 3.2665428372416994) internal successors, (14069), 5110 states have internal predecessors, (14069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:50,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 14069 transitions. [2023-11-23 21:31:50,197 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 14069 transitions. Word has length 3 [2023-11-23 21:31:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 14069 transitions. [2023-11-23 21:31:50,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 14069 transitions. [2023-11-23 21:31:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:31:50,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:50,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:31:50,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Ended with exit code 0 [2023-11-23 21:31:50,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:50,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:50,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:50,419 INFO L85 PathProgramCache]: Analyzing trace with hash 518872, now seen corresponding path program 1 times [2023-11-23 21:31:50,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:50,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421684715] [2023-11-23 21:31:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:50,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:50,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:50,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:50,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:31:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:50,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:31:50,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:50,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:31:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:50,609 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:50,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:50,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421684715] [2023-11-23 21:31:50,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421684715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:50,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:50,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:50,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134101768] [2023-11-23 21:31:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:50,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:50,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:50,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:50,615 INFO L87 Difference]: Start difference. First operand 5111 states and 14069 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:51,218 INFO L93 Difference]: Finished difference Result 5107 states and 14065 transitions. [2023-11-23 21:31:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:51,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 21:31:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:51,268 INFO L225 Difference]: With dead ends: 5107 [2023-11-23 21:31:51,269 INFO L226 Difference]: Without dead ends: 5107 [2023-11-23 21:31:51,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:51,272 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 48 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:51,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 74 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:31:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2023-11-23 21:31:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 5107. [2023-11-23 21:31:51,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 4307 states have (on average 3.2656141165544463) internal successors, (14065), 5106 states have internal predecessors, (14065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 14065 transitions. [2023-11-23 21:31:51,546 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 14065 transitions. Word has length 3 [2023-11-23 21:31:51,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:51,547 INFO L495 AbstractCegarLoop]: Abstraction has 5107 states and 14065 transitions. [2023-11-23 21:31:51,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 14065 transitions. [2023-11-23 21:31:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:31:51,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:51,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:31:51,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:31:51,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:51,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:51,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 16083763, now seen corresponding path program 1 times [2023-11-23 21:31:51,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:51,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252465920] [2023-11-23 21:31:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:51,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:51,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:51,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:51,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:31:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:51,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:31:51,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:51,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:51,955 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252465920] [2023-11-23 21:31:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252465920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:51,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:51,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:51,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085847865] [2023-11-23 21:31:51,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:51,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:51,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:51,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:51,957 INFO L87 Difference]: Start difference. First operand 5107 states and 14065 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:52,315 INFO L93 Difference]: Finished difference Result 5107 states and 14064 transitions. [2023-11-23 21:31:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-23 21:31:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:52,368 INFO L225 Difference]: With dead ends: 5107 [2023-11-23 21:31:52,369 INFO L226 Difference]: Without dead ends: 5107 [2023-11-23 21:31:52,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:52,372 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 107 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:52,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 53 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:31:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5107 states. [2023-11-23 21:31:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5107 to 5107. [2023-11-23 21:31:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 4307 states have (on average 3.265381936382633) internal successors, (14064), 5106 states have internal predecessors, (14064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 14064 transitions. [2023-11-23 21:31:52,622 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 14064 transitions. Word has length 4 [2023-11-23 21:31:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:52,622 INFO L495 AbstractCegarLoop]: Abstraction has 5107 states and 14064 transitions. [2023-11-23 21:31:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 14064 transitions. [2023-11-23 21:31:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:31:52,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:52,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:52,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:52,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:52,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:52,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash -938013520, now seen corresponding path program 1 times [2023-11-23 21:31:52,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:52,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272611465] [2023-11-23 21:31:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:52,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:52,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:52,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:52,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:31:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:53,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:31:53,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:53,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:53,047 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:53,047 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:53,052 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 32 treesize of output 41 [2023-11-23 21:31:53,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:53,115 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:53,115 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:53,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:31:53,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 73 treesize of output 93 [2023-11-23 21:31:53,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:31:53,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 157 treesize of output 61 [2023-11-23 21:31:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:53,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:53,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:53,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272611465] [2023-11-23 21:31:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272611465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:53,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:53,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:31:53,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838933912] [2023-11-23 21:31:53,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:53,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:31:53,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:31:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:31:53,412 INFO L87 Difference]: Start difference. First operand 5107 states and 14064 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:54,578 INFO L93 Difference]: Finished difference Result 5101 states and 14058 transitions. [2023-11-23 21:31:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:31:54,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:31:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:54,620 INFO L225 Difference]: With dead ends: 5101 [2023-11-23 21:31:54,621 INFO L226 Difference]: Without dead ends: 5101 [2023-11-23 21:31:54,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:31:54,624 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:54,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 160 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:31:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2023-11-23 21:31:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 5101. [2023-11-23 21:31:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 4303 states have (on average 3.2670230072042763) internal successors, (14058), 5100 states have internal predecessors, (14058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 14058 transitions. [2023-11-23 21:31:54,846 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 14058 transitions. Word has length 8 [2023-11-23 21:31:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:54,847 INFO L495 AbstractCegarLoop]: Abstraction has 5101 states and 14058 transitions. [2023-11-23 21:31:54,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:54,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 14058 transitions. [2023-11-23 21:31:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:31:54,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:54,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:54,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:55,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:55,054 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:55,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:55,055 INFO L85 PathProgramCache]: Analyzing trace with hash -307363498, now seen corresponding path program 1 times [2023-11-23 21:31:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:55,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564788399] [2023-11-23 21:31:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:55,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:55,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:55,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:55,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:31:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:55,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:31:55,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:55,393 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 21:31:55,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:31:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:55,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:55,536 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:55,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564788399] [2023-11-23 21:31:55,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564788399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:55,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:55,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:31:55,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874641128] [2023-11-23 21:31:55,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:55,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:55,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:55,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:55,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:55,538 INFO L87 Difference]: Start difference. First operand 5101 states and 14058 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:56,030 INFO L93 Difference]: Finished difference Result 4978 states and 13671 transitions. [2023-11-23 21:31:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:56,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 21:31:56,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:56,064 INFO L225 Difference]: With dead ends: 4978 [2023-11-23 21:31:56,064 INFO L226 Difference]: Without dead ends: 4978 [2023-11-23 21:31:56,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:56,065 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 68 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:56,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 48 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:31:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4978 states. [2023-11-23 21:31:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4978 to 4955. [2023-11-23 21:31:56,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4955 states, 4208 states have (on average 3.2433460076045626) internal successors, (13648), 4954 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4955 states to 4955 states and 13648 transitions. [2023-11-23 21:31:56,228 INFO L78 Accepts]: Start accepts. Automaton has 4955 states and 13648 transitions. Word has length 12 [2023-11-23 21:31:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:56,228 INFO L495 AbstractCegarLoop]: Abstraction has 4955 states and 13648 transitions. [2023-11-23 21:31:56,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4955 states and 13648 transitions. [2023-11-23 21:31:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:31:56,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:56,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:56,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:56,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:56,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:56,436 INFO L85 PathProgramCache]: Analyzing trace with hash -307363497, now seen corresponding path program 1 times [2023-11-23 21:31:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:56,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258846144] [2023-11-23 21:31:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:56,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:56,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:56,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:56,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:31:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:56,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:31:56,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:56,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:31:56,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:31:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:56,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:56,904 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:56,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258846144] [2023-11-23 21:31:56,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258846144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:56,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:56,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:56,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505288545] [2023-11-23 21:31:56,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:56,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:31:56,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:56,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:31:56,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:31:56,907 INFO L87 Difference]: Start difference. First operand 4955 states and 13648 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:57,429 INFO L93 Difference]: Finished difference Result 4832 states and 13261 transitions. [2023-11-23 21:31:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:31:57,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 21:31:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:57,456 INFO L225 Difference]: With dead ends: 4832 [2023-11-23 21:31:57,456 INFO L226 Difference]: Without dead ends: 4831 [2023-11-23 21:31:57,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:31:57,458 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 141 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:57,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 32 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:31:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2023-11-23 21:31:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 4808. [2023-11-23 21:31:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4808 states, 4112 states have (on average 3.219114785992218) internal successors, (13237), 4807 states have internal predecessors, (13237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:57,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4808 states to 4808 states and 13237 transitions. [2023-11-23 21:31:57,638 INFO L78 Accepts]: Start accepts. Automaton has 4808 states and 13237 transitions. Word has length 12 [2023-11-23 21:31:57,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:57,638 INFO L495 AbstractCegarLoop]: Abstraction has 4808 states and 13237 transitions. [2023-11-23 21:31:57,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:57,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4808 states and 13237 transitions. [2023-11-23 21:31:57,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:31:57,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:57,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:57,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:57,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:57,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:57,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 206410360, now seen corresponding path program 1 times [2023-11-23 21:31:57,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:57,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722194670] [2023-11-23 21:31:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:57,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:57,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 21:31:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:58,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:31:58,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:58,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:31:58,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:58,104 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:58,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:58,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722194670] [2023-11-23 21:31:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722194670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:58,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:58,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914264692] [2023-11-23 21:31:58,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:58,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:58,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:58,107 INFO L87 Difference]: Start difference. First operand 4808 states and 13237 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:58,581 INFO L93 Difference]: Finished difference Result 4227 states and 11600 transitions. [2023-11-23 21:31:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:58,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:31:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:58,601 INFO L225 Difference]: With dead ends: 4227 [2023-11-23 21:31:58,602 INFO L226 Difference]: Without dead ends: 4227 [2023-11-23 21:31:58,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:58,603 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 71 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:58,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 24 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:31:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2023-11-23 21:31:58,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 4227. [2023-11-23 21:31:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4227 states, 3732 states have (on average 3.1082529474812435) internal successors, (11600), 4226 states have internal predecessors, (11600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 11600 transitions. [2023-11-23 21:31:58,724 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 11600 transitions. Word has length 15 [2023-11-23 21:31:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:58,725 INFO L495 AbstractCegarLoop]: Abstraction has 4227 states and 11600 transitions. [2023-11-23 21:31:58,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:58,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 11600 transitions. [2023-11-23 21:31:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:31:58,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:58,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:58,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:58,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:58,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:31:58,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash 206410361, now seen corresponding path program 1 times [2023-11-23 21:31:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:58,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200641570] [2023-11-23 21:31:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:58,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:31:58,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:58,936 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:31:58,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 21:31:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:59,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:31:59,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:59,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:31:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:59,232 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:59,232 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200641570] [2023-11-23 21:31:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200641570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:59,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:59,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168526603] [2023-11-23 21:31:59,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:59,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:31:59,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:31:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:59,234 INFO L87 Difference]: Start difference. First operand 4227 states and 11600 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:59,685 INFO L93 Difference]: Finished difference Result 3666 states and 9983 transitions. [2023-11-23 21:31:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:31:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:31:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:59,699 INFO L225 Difference]: With dead ends: 3666 [2023-11-23 21:31:59,699 INFO L226 Difference]: Without dead ends: 3666 [2023-11-23 21:31:59,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:31:59,700 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 44 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:59,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 50 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:31:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2023-11-23 21:31:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 3658. [2023-11-23 21:31:59,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3658 states, 3359 states have (on average 2.96993152724025) internal successors, (9976), 3657 states have internal predecessors, (9976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 9976 transitions. [2023-11-23 21:31:59,807 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 9976 transitions. Word has length 15 [2023-11-23 21:31:59,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:59,807 INFO L495 AbstractCegarLoop]: Abstraction has 3658 states and 9976 transitions. [2023-11-23 21:31:59,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:31:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 9976 transitions. [2023-11-23 21:31:59,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:31:59,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:59,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:59,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-23 21:32:00,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:00,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:00,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash 204886323, now seen corresponding path program 1 times [2023-11-23 21:32:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:00,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239317402] [2023-11-23 21:32:00,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:00,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:00,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:00,015 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:00,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 21:32:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:00,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:32:00,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:00,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:00,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:00,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239317402] [2023-11-23 21:32:00,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239317402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:00,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:00,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665077408] [2023-11-23 21:32:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:00,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:00,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:00,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:00,288 INFO L87 Difference]: Start difference. First operand 3658 states and 9976 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:01,334 INFO L93 Difference]: Finished difference Result 3207 states and 8554 transitions. [2023-11-23 21:32:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:32:01,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:32:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:01,357 INFO L225 Difference]: With dead ends: 3207 [2023-11-23 21:32:01,357 INFO L226 Difference]: Without dead ends: 3207 [2023-11-23 21:32:01,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:32:01,358 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 186 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:01,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 137 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2023-11-23 21:32:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 3019. [2023-11-23 21:32:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2789 states have (on average 2.938687701685192) internal successors, (8196), 3018 states have internal predecessors, (8196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 8196 transitions. [2023-11-23 21:32:01,449 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 8196 transitions. Word has length 15 [2023-11-23 21:32:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:01,450 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 8196 transitions. [2023-11-23 21:32:01,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 8196 transitions. [2023-11-23 21:32:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:32:01,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:01,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:01,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:01,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:01,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 204886324, now seen corresponding path program 1 times [2023-11-23 21:32:01,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:01,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77331119] [2023-11-23 21:32:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:01,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:01,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:01,665 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:01,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 21:32:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:01,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:32:01,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:01,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:02,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:02,001 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:02,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77331119] [2023-11-23 21:32:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77331119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:02,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304946875] [2023-11-23 21:32:02,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:02,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:02,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:02,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:02,003 INFO L87 Difference]: Start difference. First operand 3019 states and 8196 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:03,060 INFO L93 Difference]: Finished difference Result 2212 states and 5760 transitions. [2023-11-23 21:32:03,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:32:03,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:32:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:03,068 INFO L225 Difference]: With dead ends: 2212 [2023-11-23 21:32:03,068 INFO L226 Difference]: Without dead ends: 2208 [2023-11-23 21:32:03,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:32:03,069 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 146 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:03,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 143 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:03,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2023-11-23 21:32:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2208. [2023-11-23 21:32:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 2068 states have (on average 2.7785299806576402) internal successors, (5746), 2207 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 5746 transitions. [2023-11-23 21:32:03,134 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 5746 transitions. Word has length 15 [2023-11-23 21:32:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:03,134 INFO L495 AbstractCegarLoop]: Abstraction has 2208 states and 5746 transitions. [2023-11-23 21:32:03,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 5746 transitions. [2023-11-23 21:32:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:32:03,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:03,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:03,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:03,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:03,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:03,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 204885648, now seen corresponding path program 1 times [2023-11-23 21:32:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923086818] [2023-11-23 21:32:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:03,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:03,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:03,343 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:03,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 21:32:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:03,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:32:03,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:03,622 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 21:32:03,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:32:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:03,699 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:03,699 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:03,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923086818] [2023-11-23 21:32:03,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923086818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:03,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:03,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:32:03,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087296963] [2023-11-23 21:32:03,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:03,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:03,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:03,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:03,702 INFO L87 Difference]: Start difference. First operand 2208 states and 5746 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:04,080 INFO L93 Difference]: Finished difference Result 2198 states and 5719 transitions. [2023-11-23 21:32:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:04,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:32:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:04,087 INFO L225 Difference]: With dead ends: 2198 [2023-11-23 21:32:04,087 INFO L226 Difference]: Without dead ends: 2198 [2023-11-23 21:32:04,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:04,088 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:04,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 45 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:32:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2023-11-23 21:32:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 2190. [2023-11-23 21:32:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2058 states have (on average 2.7755102040816326) internal successors, (5712), 2189 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 5712 transitions. [2023-11-23 21:32:04,141 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 5712 transitions. Word has length 15 [2023-11-23 21:32:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:04,142 INFO L495 AbstractCegarLoop]: Abstraction has 2190 states and 5712 transitions. [2023-11-23 21:32:04,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 5712 transitions. [2023-11-23 21:32:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:32:04,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:04,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:04,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:04,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:04,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:04,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:04,355 INFO L85 PathProgramCache]: Analyzing trace with hash 204885649, now seen corresponding path program 1 times [2023-11-23 21:32:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:04,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838365139] [2023-11-23 21:32:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:04,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:04,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:04,357 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:04,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 21:32:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:04,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:32:04,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:04,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:32:04,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:32:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:04,880 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:04,881 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:04,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838365139] [2023-11-23 21:32:04,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838365139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:04,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:04,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:04,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885124834] [2023-11-23 21:32:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:04,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:04,883 INFO L87 Difference]: Start difference. First operand 2190 states and 5712 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:05,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:05,380 INFO L93 Difference]: Finished difference Result 2180 states and 5685 transitions. [2023-11-23 21:32:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:32:05,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:32:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:05,389 INFO L225 Difference]: With dead ends: 2180 [2023-11-23 21:32:05,389 INFO L226 Difference]: Without dead ends: 2180 [2023-11-23 21:32:05,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:05,391 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 166 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:05,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 31 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:32:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2023-11-23 21:32:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 2172. [2023-11-23 21:32:05,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2048 states have (on average 2.7724609375) internal successors, (5678), 2171 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 5678 transitions. [2023-11-23 21:32:05,468 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 5678 transitions. Word has length 15 [2023-11-23 21:32:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:05,470 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 5678 transitions. [2023-11-23 21:32:05,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 5678 transitions. [2023-11-23 21:32:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:32:05,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:05,473 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:05,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:05,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:05,679 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:05,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 600394395, now seen corresponding path program 1 times [2023-11-23 21:32:05,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:05,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394440485] [2023-11-23 21:32:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:05,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:05,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:05,682 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:05,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-23 21:32:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:05,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:32:05,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:05,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:05,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:05,989 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:05,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394440485] [2023-11-23 21:32:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394440485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:05,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:05,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128671107] [2023-11-23 21:32:05,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:05,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:05,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:05,992 INFO L87 Difference]: Start difference. First operand 2172 states and 5678 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:07,022 INFO L93 Difference]: Finished difference Result 2035 states and 5213 transitions. [2023-11-23 21:32:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:32:07,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 21:32:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:07,036 INFO L225 Difference]: With dead ends: 2035 [2023-11-23 21:32:07,037 INFO L226 Difference]: Without dead ends: 2035 [2023-11-23 21:32:07,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:32:07,038 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 143 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:07,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 135 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:32:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2023-11-23 21:32:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1867. [2023-11-23 21:32:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1767 states have (on average 2.7736276174306735) internal successors, (4901), 1866 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 4901 transitions. [2023-11-23 21:32:07,103 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 4901 transitions. Word has length 18 [2023-11-23 21:32:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:07,105 INFO L495 AbstractCegarLoop]: Abstraction has 1867 states and 4901 transitions. [2023-11-23 21:32:07,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 4901 transitions. [2023-11-23 21:32:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:32:07,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:07,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:07,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:07,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:07,313 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:07,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash 600394396, now seen corresponding path program 1 times [2023-11-23 21:32:07,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:07,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250909189] [2023-11-23 21:32:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:07,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:07,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:07,316 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:07,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (15)] Waiting until timeout for monitored process [2023-11-23 21:32:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:07,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:32:07,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:07,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:07,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:07,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:07,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250909189] [2023-11-23 21:32:07,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250909189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:07,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:07,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:07,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305317278] [2023-11-23 21:32:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:07,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:07,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:07,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:07,704 INFO L87 Difference]: Start difference. First operand 1867 states and 4901 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:08,718 INFO L93 Difference]: Finished difference Result 1411 states and 3526 transitions. [2023-11-23 21:32:08,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:32:08,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 21:32:08,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:08,721 INFO L225 Difference]: With dead ends: 1411 [2023-11-23 21:32:08,721 INFO L226 Difference]: Without dead ends: 1403 [2023-11-23 21:32:08,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:32:08,722 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 110 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:08,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 135 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:32:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2023-11-23 21:32:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1403. [2023-11-23 21:32:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1333 states have (on average 2.6211552888222056) internal successors, (3494), 1402 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 3494 transitions. [2023-11-23 21:32:08,757 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 3494 transitions. Word has length 18 [2023-11-23 21:32:08,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:08,757 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 3494 transitions. [2023-11-23 21:32:08,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 3494 transitions. [2023-11-23 21:32:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:32:08,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:08,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:08,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:08,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:08,965 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:08,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:08,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1505968442, now seen corresponding path program 1 times [2023-11-23 21:32:08,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:08,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028692421] [2023-11-23 21:32:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:08,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:08,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:08,967 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:08,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Waiting until timeout for monitored process [2023-11-23 21:32:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:09,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:32:09,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:09,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:09,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:09,242 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:09,245 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 32 treesize of output 41 [2023-11-23 21:32:09,299 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:09,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:32:09,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 83 treesize of output 73 [2023-11-23 21:32:09,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:32:09,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 57 [2023-11-23 21:32:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:09,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:09,435 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:09,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028692421] [2023-11-23 21:32:09,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028692421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:09,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:09,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:32:09,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718566070] [2023-11-23 21:32:09,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:09,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:09,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:09,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:09,437 INFO L87 Difference]: Start difference. First operand 1403 states and 3494 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:12,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:12,657 INFO L93 Difference]: Finished difference Result 1772 states and 4462 transitions. [2023-11-23 21:32:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:32:12,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-23 21:32:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:12,664 INFO L225 Difference]: With dead ends: 1772 [2023-11-23 21:32:12,664 INFO L226 Difference]: Without dead ends: 1772 [2023-11-23 21:32:12,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:32:12,665 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 45 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:12,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 99 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 21:32:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2023-11-23 21:32:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1484. [2023-11-23 21:32:12,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1415 states have (on average 2.619081272084806) internal successors, (3706), 1483 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 3706 transitions. [2023-11-23 21:32:12,726 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 3706 transitions. Word has length 20 [2023-11-23 21:32:12,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:12,727 INFO L495 AbstractCegarLoop]: Abstraction has 1484 states and 3706 transitions. [2023-11-23 21:32:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 3706 transitions. [2023-11-23 21:32:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:32:12,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:12,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:12,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:12,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:12,940 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:12,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1321289950, now seen corresponding path program 1 times [2023-11-23 21:32:12,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:12,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955685897] [2023-11-23 21:32:12,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:12,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:12,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:12,946 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:12,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:13,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:32:13,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:13,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:13,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:13,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:32:13,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:32:13,588 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:32:13,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:32:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:13,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:13,613 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:13,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955685897] [2023-11-23 21:32:13,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955685897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:13,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:13,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:32:13,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188876709] [2023-11-23 21:32:13,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:13,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:32:13,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:32:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:32:13,615 INFO L87 Difference]: Start difference. First operand 1484 states and 3706 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:14,888 INFO L93 Difference]: Finished difference Result 1766 states and 4352 transitions. [2023-11-23 21:32:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:32:14,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2023-11-23 21:32:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:14,893 INFO L225 Difference]: With dead ends: 1766 [2023-11-23 21:32:14,893 INFO L226 Difference]: Without dead ends: 1766 [2023-11-23 21:32:14,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:32:14,894 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 178 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:14,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 121 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:32:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2023-11-23 21:32:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1430. [2023-11-23 21:32:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1373 states have (on average 2.6052439912600147) internal successors, (3577), 1429 states have internal predecessors, (3577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 3577 transitions. [2023-11-23 21:32:14,929 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 3577 transitions. Word has length 21 [2023-11-23 21:32:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:14,930 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 3577 transitions. [2023-11-23 21:32:14,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 3577 transitions. [2023-11-23 21:32:14,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:32:14,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:14,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:14,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:15,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:15,139 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:15,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2051636582, now seen corresponding path program 1 times [2023-11-23 21:32:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051910597] [2023-11-23 21:32:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:15,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:15,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:15,141 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:15,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Waiting until timeout for monitored process [2023-11-23 21:32:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:15,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:32:15,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:15,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:15,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:15,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:32:15,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:32:15,675 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:32:15,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:32:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:15,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:15,693 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:15,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051910597] [2023-11-23 21:32:15,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051910597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:15,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:15,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:32:15,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066485887] [2023-11-23 21:32:15,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:32:15,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:15,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:32:15,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:32:15,696 INFO L87 Difference]: Start difference. First operand 1430 states and 3577 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:16,983 INFO L93 Difference]: Finished difference Result 1715 states and 4238 transitions. [2023-11-23 21:32:16,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:32:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2023-11-23 21:32:16,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:16,986 INFO L225 Difference]: With dead ends: 1715 [2023-11-23 21:32:16,987 INFO L226 Difference]: Without dead ends: 1715 [2023-11-23 21:32:16,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:32:16,987 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 166 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:16,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 125 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:32:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2023-11-23 21:32:17,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1379. [2023-11-23 21:32:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1331 states have (on average 2.601803155522164) internal successors, (3463), 1378 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 3463 transitions. [2023-11-23 21:32:17,022 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 3463 transitions. Word has length 21 [2023-11-23 21:32:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:17,023 INFO L495 AbstractCegarLoop]: Abstraction has 1379 states and 3463 transitions. [2023-11-23 21:32:17,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 3463 transitions. [2023-11-23 21:32:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:32:17,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:17,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:17,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:17,232 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:17,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 805970832, now seen corresponding path program 1 times [2023-11-23 21:32:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:17,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983449786] [2023-11-23 21:32:17,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:17,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:17,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:17,234 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:17,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (19)] Waiting until timeout for monitored process [2023-11-23 21:32:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:17,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:32:17,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:17,549 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:17,550 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:17,550 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:32:17,554 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 32 treesize of output 41 [2023-11-23 21:32:17,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:32:17,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 49 [2023-11-23 21:32:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:17,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:17,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983449786] [2023-11-23 21:32:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983449786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:17,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:17,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065332244] [2023-11-23 21:32:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:17,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:17,688 INFO L87 Difference]: Start difference. First operand 1379 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:19,333 INFO L93 Difference]: Finished difference Result 1748 states and 4432 transitions. [2023-11-23 21:32:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:19,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 23 [2023-11-23 21:32:19,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:19,338 INFO L225 Difference]: With dead ends: 1748 [2023-11-23 21:32:19,338 INFO L226 Difference]: Without dead ends: 1748 [2023-11-23 21:32:19,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:19,339 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:19,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 82 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 21:32:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2023-11-23 21:32:19,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1556. [2023-11-23 21:32:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1509 states have (on average 2.624254473161034) internal successors, (3960), 1555 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 3960 transitions. [2023-11-23 21:32:19,407 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 3960 transitions. Word has length 23 [2023-11-23 21:32:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:19,407 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 3960 transitions. [2023-11-23 21:32:19,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 3960 transitions. [2023-11-23 21:32:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:32:19,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:19,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:19,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (19)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:19,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:19,619 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:19,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash -784817288, now seen corresponding path program 1 times [2023-11-23 21:32:19,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:19,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825087624] [2023-11-23 21:32:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:19,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:19,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:19,621 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:19,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:19,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:32:19,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:20,130 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_77| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_77|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_77| (_ bv0 1))))) is different from true [2023-11-23 21:32:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:20,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:20,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:20,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825087624] [2023-11-23 21:32:20,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825087624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:20,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:20,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339008383] [2023-11-23 21:32:20,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:20,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:32:20,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:20,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:32:20,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-23 21:32:20,142 INFO L87 Difference]: Start difference. First operand 1556 states and 3960 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:20,891 INFO L93 Difference]: Finished difference Result 1493 states and 3804 transitions. [2023-11-23 21:32:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:32:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 24 [2023-11-23 21:32:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:20,896 INFO L225 Difference]: With dead ends: 1493 [2023-11-23 21:32:20,896 INFO L226 Difference]: Without dead ends: 1404 [2023-11-23 21:32:20,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-23 21:32:20,897 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:20,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 65 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 130 Unchecked, 0.7s Time] [2023-11-23 21:32:20,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2023-11-23 21:32:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1358. [2023-11-23 21:32:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1327 states have (on average 2.5599095704596837) internal successors, (3397), 1357 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 3397 transitions. [2023-11-23 21:32:20,932 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 3397 transitions. Word has length 24 [2023-11-23 21:32:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:20,932 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 3397 transitions. [2023-11-23 21:32:20,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 3397 transitions. [2023-11-23 21:32:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:32:20,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:20,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:20,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:21,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:21,148 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:21,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1424405723, now seen corresponding path program 1 times [2023-11-23 21:32:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:21,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821815291] [2023-11-23 21:32:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:21,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:21,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:21,151 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:21,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (21)] Waiting until timeout for monitored process [2023-11-23 21:32:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:21,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:32:21,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:21,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:21,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:21,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:21,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821815291] [2023-11-23 21:32:21,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821815291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:21,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:21,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:21,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476319331] [2023-11-23 21:32:21,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:21,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:21,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:21,481 INFO L87 Difference]: Start difference. First operand 1358 states and 3397 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 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) [2023-11-23 21:32:21,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:21,834 INFO L93 Difference]: Finished difference Result 1351 states and 3385 transitions. [2023-11-23 21:32:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:21,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 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 27 [2023-11-23 21:32:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:21,837 INFO L225 Difference]: With dead ends: 1351 [2023-11-23 21:32:21,837 INFO L226 Difference]: Without dead ends: 1351 [2023-11-23 21:32:21,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:21,838 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:21,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:32:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-11-23 21:32:21,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1351. [2023-11-23 21:32:21,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1322 states have (on average 2.560514372163389) internal successors, (3385), 1350 states have internal predecessors, (3385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 3385 transitions. [2023-11-23 21:32:21,871 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 3385 transitions. Word has length 27 [2023-11-23 21:32:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:21,872 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 3385 transitions. [2023-11-23 21:32:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 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) [2023-11-23 21:32:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 3385 transitions. [2023-11-23 21:32:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:32:21,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:21,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:21,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (21)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:22,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:22,081 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:22,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:22,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1424405722, now seen corresponding path program 1 times [2023-11-23 21:32:22,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:22,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090241702] [2023-11-23 21:32:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:22,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:22,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:22,083 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:22,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (22)] Waiting until timeout for monitored process [2023-11-23 21:32:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:22,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:32:22,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:22,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:22,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:22,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:22,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:22,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090241702] [2023-11-23 21:32:22,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090241702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:22,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:22,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:32:22,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326669218] [2023-11-23 21:32:22,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:22,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:32:22,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:32:22,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:22,425 INFO L87 Difference]: Start difference. First operand 1351 states and 3385 transitions. Second operand has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 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) [2023-11-23 21:32:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:22,823 INFO L93 Difference]: Finished difference Result 1344 states and 3373 transitions. [2023-11-23 21:32:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:32:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 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 27 [2023-11-23 21:32:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:22,826 INFO L225 Difference]: With dead ends: 1344 [2023-11-23 21:32:22,826 INFO L226 Difference]: Without dead ends: 1344 [2023-11-23 21:32:22,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:32:22,827 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:22,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 48 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:32:22,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-11-23 21:32:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1344. [2023-11-23 21:32:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1317 states have (on average 2.5611237661351556) internal successors, (3373), 1343 states have internal predecessors, (3373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 3373 transitions. [2023-11-23 21:32:22,859 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 3373 transitions. Word has length 27 [2023-11-23 21:32:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:22,860 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 3373 transitions. [2023-11-23 21:32:22,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.5) internal successors, (27), 3 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) [2023-11-23 21:32:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 3373 transitions. [2023-11-23 21:32:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:32:22,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:22,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:22,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (22)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:23,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:23,069 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:23,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1384153936, now seen corresponding path program 1 times [2023-11-23 21:32:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:23,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020462467] [2023-11-23 21:32:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:23,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:23,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:23,072 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:23,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:23,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:32:23,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:23,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:23,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:23,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020462467] [2023-11-23 21:32:23,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020462467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:23,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:32:23,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908227439] [2023-11-23 21:32:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:23,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:23,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:23,437 INFO L87 Difference]: Start difference. First operand 1344 states and 3373 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:23,785 INFO L93 Difference]: Finished difference Result 261 states and 555 transitions. [2023-11-23 21:32:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:32:23,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2023-11-23 21:32:23,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:23,786 INFO L225 Difference]: With dead ends: 261 [2023-11-23 21:32:23,786 INFO L226 Difference]: Without dead ends: 261 [2023-11-23 21:32:23,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:32:23,787 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 92 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:23,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 41 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:32:23,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-23 21:32:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-11-23 21:32:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 251 states have (on average 2.2111553784860556) internal successors, (555), 260 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 555 transitions. [2023-11-23 21:32:23,793 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 555 transitions. Word has length 28 [2023-11-23 21:32:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:23,793 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 555 transitions. [2023-11-23 21:32:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 555 transitions. [2023-11-23 21:32:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:32:23,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:23,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:23,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:32:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:23,999 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:24,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash -318219472, now seen corresponding path program 1 times [2023-11-23 21:32:24,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:24,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125778055] [2023-11-23 21:32:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:24,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:24,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:24,001 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:24,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Waiting until timeout for monitored process [2023-11-23 21:32:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:24,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:32:24,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:24,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:24,576 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-23 21:32:24,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-23 21:32:24,628 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 16 treesize of output 13 [2023-11-23 21:32:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:24,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:24,631 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:24,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125778055] [2023-11-23 21:32:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125778055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:24,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:24,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:32:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616739630] [2023-11-23 21:32:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:24,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:32:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:32:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:24,633 INFO L87 Difference]: Start difference. First operand 261 states and 555 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:32:24,978 INFO L93 Difference]: Finished difference Result 260 states and 554 transitions. [2023-11-23 21:32:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:32:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2023-11-23 21:32:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:32:24,979 INFO L225 Difference]: With dead ends: 260 [2023-11-23 21:32:24,980 INFO L226 Difference]: Without dead ends: 260 [2023-11-23 21:32:24,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:32:24,981 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:32:24,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 23 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:32:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-23 21:32:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-23 21:32:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 251 states have (on average 2.2071713147410357) internal successors, (554), 259 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 554 transitions. [2023-11-23 21:32:24,986 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 554 transitions. Word has length 36 [2023-11-23 21:32:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:32:24,987 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 554 transitions. [2023-11-23 21:32:24,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:32:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 554 transitions. [2023-11-23 21:32:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-23 21:32:24,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:32:24,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:32:24,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:32:25,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:25,197 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (and 56 more)] === [2023-11-23 21:32:25,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:32:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash -318219471, now seen corresponding path program 1 times [2023-11-23 21:32:25,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:32:25,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532047624] [2023-11-23 21:32:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:32:25,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:32:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:32:25,199 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:32:25,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4baa9247-753a-4e20-aa24-2639c50f5dee/bin/utaipan-verify-mE87zJ7Ire/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 (25)] Waiting until timeout for monitored process [2023-11-23 21:32:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:32:25,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:32:25,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:25,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:32:25,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:32:26,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:32:26,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:32:26,192 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:32:26,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:32:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:32:26,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:32:26,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:32:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [532047624] [2023-11-23 21:32:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [532047624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:32:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:32:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:32:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259368056] [2023-11-23 21:32:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:32:26,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:32:26,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:32:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:32:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:32:26,249 INFO L87 Difference]: Start difference. First operand 260 states and 554 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 states have internal predecessors, (36), 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)