./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:02:56,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:02:56,631 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 01:02:56,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:02:56,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:02:56,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:02:56,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:02:56,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:02:56,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:02:56,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:02:56,703 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:02:56,703 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:02:56,704 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:02:56,704 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:02:56,705 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:02:56,705 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:02:56,705 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:02:56,706 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:02:56,706 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:02:56,707 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:02:56,707 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:02:56,708 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:02:56,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:02:56,709 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:02:56,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:02:56,710 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:02:56,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:02:56,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:02:56,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:02:56,712 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:02:56,714 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:02:56,714 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:02:56,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:02:56,714 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:02:56,715 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:02:56,715 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:02:56,715 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:02:56,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:02:56,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:02:56,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:02:56,716 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:02:56,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:02:56,717 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:02:56,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:02:56,718 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:02:56,718 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:02:56,718 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_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2023-11-12 01:02:56,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:02:57,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:02:57,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:02:57,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:02:57,006 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:02:57,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2023-11-12 01:02:59,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:00,396 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:00,396 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2023-11-12 01:03:00,417 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data/e300d50a0/6c028d352dff44b7a54a943b2d5bb484/FLAGb71491f73 [2023-11-12 01:03:00,444 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data/e300d50a0/6c028d352dff44b7a54a943b2d5bb484 [2023-11-12 01:03:00,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:00,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:00,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:00,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:00,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:00,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:00" (1/1) ... [2023-11-12 01:03:00,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318a0ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:00, skipping insertion in model container [2023-11-12 01:03:00,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:00" (1/1) ... [2023-11-12 01:03:00,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:01,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:01,174 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-12 01:03:01,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2958b9a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:01, skipping insertion in model container [2023-11-12 01:03:01,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:01,176 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 01:03:01,178 INFO L158 Benchmark]: Toolchain (without parser) took 726.14ms. Allocated memory is still 132.1MB. Free memory was 99.0MB in the beginning and 79.2MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 01:03:01,178 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 132.1MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 01:03:01,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.72ms. Allocated memory is still 132.1MB. Free memory was 98.7MB in the beginning and 79.2MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 01:03:01,181 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 132.1MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.72ms. Allocated memory is still 132.1MB. Free memory was 98.7MB in the beginning and 79.2MB in the end (delta: 19.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:03:03,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:03:03,809 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 01:03:03,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:03:03,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:03:03,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:03:03,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:03:03,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:03:03,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:03:03,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:03:03,883 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:03:03,884 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:03:03,884 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:03:03,886 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:03:03,887 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:03:03,887 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:03:03,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 01:03:03,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 01:03:03,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:03:03,890 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:03:03,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:03:03,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:03:03,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:03:03,892 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 01:03:03,892 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 01:03:03,893 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 01:03:03,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:03:03,894 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 01:03:03,894 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 01:03:03,894 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 01:03:03,896 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:03:03,896 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:03:03,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:03:03,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:03:03,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 01:03:03,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:03:03,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:03,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:03:03,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:03:03,899 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 01:03:03,900 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 01:03:03,900 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:03:03,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:03:03,901 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_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2023-11-12 01:03:04,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:03:04,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:03:04,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:03:04,337 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:03:04,338 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:03:04,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2023-11-12 01:03:07,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:03:08,160 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:03:08,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2023-11-12 01:03:08,189 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data/c579ec7d1/3626c5e6b9f8429f85995da102086a09/FLAG34d16ac3c [2023-11-12 01:03:08,208 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/data/c579ec7d1/3626c5e6b9f8429f85995da102086a09 [2023-11-12 01:03:08,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:03:08,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:03:08,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:08,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:03:08,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:03:08,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:08" (1/1) ... [2023-11-12 01:03:08,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e675ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:08, skipping insertion in model container [2023-11-12 01:03:08,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:03:08" (1/1) ... [2023-11-12 01:03:08,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:09,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:09,055 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 01:03:09,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:03:09,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:09,178 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:03:09,261 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:03:09,332 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:03:09,340 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:03:09,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09 WrapperNode [2023-11-12 01:03:09,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:03:09,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:09,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:03:09,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:03:09,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,402 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,503 INFO L138 Inliner]: procedures = 180, calls = 287, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1047 [2023-11-12 01:03:09,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:03:09,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:03:09,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:03:09,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:03:09,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:03:09,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:03:09,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:03:09,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:03:09,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (1/1) ... [2023-11-12 01:03:09,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:03:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:03:09,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:03:09,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:03:09,801 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 01:03:09,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 01:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 01:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 01:03:09,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 01:03:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 01:03:09,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 01:03:09,803 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 01:03:09,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 01:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 01:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 01:03:09,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 01:03:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:03:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 01:03:09,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 01:03:09,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:03:09,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:03:10,049 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:03:10,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:03:10,089 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 01:03:15,851 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:03:15,865 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:03:15,865 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-12 01:03:15,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:15 BoogieIcfgContainer [2023-11-12 01:03:15,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:03:15,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:03:15,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:03:15,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:03:15,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:03:08" (1/3) ... [2023-11-12 01:03:15,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0b8b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:15, skipping insertion in model container [2023-11-12 01:03:15,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:03:09" (2/3) ... [2023-11-12 01:03:15,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0b8b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:03:15, skipping insertion in model container [2023-11-12 01:03:15,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:03:15" (3/3) ... [2023-11-12 01:03:15,877 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-1.i [2023-11-12 01:03:15,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:03:15,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 533 error locations. [2023-11-12 01:03:15,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:03:15,969 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;@4db01348, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:03:15,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 533 error locations. [2023-11-12 01:03:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 539 states have (on average 2.222634508348794) internal successors, (1198), 1076 states have internal predecessors, (1198), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-12 01:03:15,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:03:15,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:15,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:03:15,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:15,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:15,991 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-12 01:03:16,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:16,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231949075] [2023-11-12 01:03:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:16,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:16,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:16,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-12 01:03:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:16,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:16,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:16,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:03:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:16,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:16,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:16,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231949075] [2023-11-12 01:03:16,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231949075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:16,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:16,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:16,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005928743] [2023-11-12 01:03:16,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:16,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:16,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:16,311 INFO L87 Difference]: Start difference. First operand has 1083 states, 539 states have (on average 2.222634508348794) internal successors, (1198), 1076 states have internal predecessors, (1198), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:18,667 INFO L93 Difference]: Finished difference Result 1080 states and 1145 transitions. [2023-11-12 01:03:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:18,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 01:03:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:18,692 INFO L225 Difference]: With dead ends: 1080 [2023-11-12 01:03:18,692 INFO L226 Difference]: Without dead ends: 1078 [2023-11-12 01:03:18,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:18,697 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 996 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:18,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 721 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 01:03:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2023-11-12 01:03:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1069. [2023-11-12 01:03:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 541 states have (on average 2.0646950092421443) internal successors, (1117), 1062 states have internal predecessors, (1117), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1135 transitions. [2023-11-12 01:03:18,796 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1135 transitions. Word has length 3 [2023-11-12 01:03:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:18,797 INFO L495 AbstractCegarLoop]: Abstraction has 1069 states and 1135 transitions. [2023-11-12 01:03:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1135 transitions. [2023-11-12 01:03:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 01:03:18,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:18,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 01:03:18,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-12 01:03:19,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:19,010 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:19,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-12 01:03:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523557299] [2023-11-12 01:03:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:19,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:19,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:19,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:19,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-12 01:03:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:19,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:19,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:19,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:03:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:19,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:19,170 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523557299] [2023-11-12 01:03:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523557299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:19,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:19,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598868620] [2023-11-12 01:03:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:19,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:19,174 INFO L87 Difference]: Start difference. First operand 1069 states and 1135 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:23,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:23,001 INFO L93 Difference]: Finished difference Result 1483 states and 1590 transitions. [2023-11-12 01:03:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:23,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 01:03:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:23,011 INFO L225 Difference]: With dead ends: 1483 [2023-11-12 01:03:23,011 INFO L226 Difference]: Without dead ends: 1483 [2023-11-12 01:03:23,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:23,013 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 444 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:23,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1537 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-12 01:03:23,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-11-12 01:03:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1274. [2023-11-12 01:03:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 747 states have (on average 2.0535475234270417) internal successors, (1534), 1267 states have internal predecessors, (1534), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 1552 transitions. [2023-11-12 01:03:23,057 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 1552 transitions. Word has length 3 [2023-11-12 01:03:23,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:23,057 INFO L495 AbstractCegarLoop]: Abstraction has 1274 states and 1552 transitions. [2023-11-12 01:03:23,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:23,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 1552 transitions. [2023-11-12 01:03:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 01:03:23,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:23,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:23,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:23,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:23,270 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:23,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-12 01:03:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:23,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222063880] [2023-11-12 01:03:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:23,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:23,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:23,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:23,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-12 01:03:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:23,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:03:23,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:23,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:03:23,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:03:23,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:03:23,576 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 01:03:23,598 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 01:03:23,599 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 01:03:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:23,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:23,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222063880] [2023-11-12 01:03:23,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222063880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:23,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:23,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:23,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921097592] [2023-11-12 01:03:23,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:23,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:23,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:23,628 INFO L87 Difference]: Start difference. First operand 1274 states and 1552 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:27,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:27,154 INFO L93 Difference]: Finished difference Result 1277 states and 1557 transitions. [2023-11-12 01:03:27,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:27,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 01:03:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:27,162 INFO L225 Difference]: With dead ends: 1277 [2023-11-12 01:03:27,162 INFO L226 Difference]: Without dead ends: 1277 [2023-11-12 01:03:27,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:27,164 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1088 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:27,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 436 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-12 01:03:27,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-11-12 01:03:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1058. [2023-11-12 01:03:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 541 states have (on average 2.042513863216266) internal successors, (1105), 1051 states have internal predecessors, (1105), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1123 transitions. [2023-11-12 01:03:27,197 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1123 transitions. Word has length 7 [2023-11-12 01:03:27,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:27,197 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1123 transitions. [2023-11-12 01:03:27,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1123 transitions. [2023-11-12 01:03:27,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:03:27,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:27,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:27,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-12 01:03:27,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:27,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:27,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-12 01:03:27,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:27,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281538209] [2023-11-12 01:03:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:27,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:27,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:27,416 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:27,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-12 01:03:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:27,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:27,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:27,591 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:03:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:27,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:27,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:27,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281538209] [2023-11-12 01:03:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281538209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:27,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:27,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:27,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077264181] [2023-11-12 01:03:27,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:27,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:27,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:27,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:27,611 INFO L87 Difference]: Start difference. First operand 1058 states and 1123 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:30,263 INFO L93 Difference]: Finished difference Result 1389 states and 1484 transitions. [2023-11-12 01:03:30,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:30,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 01:03:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:30,273 INFO L225 Difference]: With dead ends: 1389 [2023-11-12 01:03:30,273 INFO L226 Difference]: Without dead ends: 1389 [2023-11-12 01:03:30,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:30,275 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 996 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:30,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1222 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-12 01:03:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2023-11-12 01:03:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1009. [2023-11-12 01:03:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 541 states have (on average 1.9519408502772644) internal successors, (1056), 1002 states have internal predecessors, (1056), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1074 transitions. [2023-11-12 01:03:30,307 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1074 transitions. Word has length 8 [2023-11-12 01:03:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:30,308 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1074 transitions. [2023-11-12 01:03:30,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1074 transitions. [2023-11-12 01:03:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:03:30,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:30,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:30,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:30,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:30,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:30,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:30,521 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-12 01:03:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:30,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172958613] [2023-11-12 01:03:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:30,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:30,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:30,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:30,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-12 01:03:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:30,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:30,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:30,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:03:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:30,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:30,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:30,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172958613] [2023-11-12 01:03:30,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172958613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:30,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:30,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:03:30,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4726982] [2023-11-12 01:03:30,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:30,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:30,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:30,758 INFO L87 Difference]: Start difference. First operand 1009 states and 1074 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:34,110 INFO L93 Difference]: Finished difference Result 1470 states and 1568 transitions. [2023-11-12 01:03:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 01:03:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:34,119 INFO L225 Difference]: With dead ends: 1470 [2023-11-12 01:03:34,119 INFO L226 Difference]: Without dead ends: 1470 [2023-11-12 01:03:34,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:34,120 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 681 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:34,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1623 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-12 01:03:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-12 01:03:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1031. [2023-11-12 01:03:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 573 states have (on average 1.9406631762652704) internal successors, (1112), 1024 states have internal predecessors, (1112), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1130 transitions. [2023-11-12 01:03:34,168 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1130 transitions. Word has length 8 [2023-11-12 01:03:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:34,168 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1130 transitions. [2023-11-12 01:03:34,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:34,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1130 transitions. [2023-11-12 01:03:34,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 01:03:34,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:34,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:34,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:34,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:34,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr525REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:34,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:34,382 INFO L85 PathProgramCache]: Analyzing trace with hash -748709626, now seen corresponding path program 1 times [2023-11-12 01:03:34,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:34,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623583388] [2023-11-12 01:03:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:34,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:34,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:34,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:34,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-12 01:03:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:34,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 01:03:34,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:34,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:34,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:34,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623583388] [2023-11-12 01:03:34,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623583388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:34,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:34,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452564422] [2023-11-12 01:03:34,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:34,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:34,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:34,627 INFO L87 Difference]: Start difference. First operand 1031 states and 1130 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:35,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:35,424 INFO L93 Difference]: Finished difference Result 1485 states and 1618 transitions. [2023-11-12 01:03:35,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 01:03:35,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-12 01:03:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:35,432 INFO L225 Difference]: With dead ends: 1485 [2023-11-12 01:03:35,432 INFO L226 Difference]: Without dead ends: 1485 [2023-11-12 01:03:35,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:35,433 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 551 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:35,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 3048 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 01:03:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-11-12 01:03:35,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1276. [2023-11-12 01:03:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 818 states have (on average 1.921760391198044) internal successors, (1572), 1269 states have internal predecessors, (1572), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1590 transitions. [2023-11-12 01:03:35,469 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1590 transitions. Word has length 11 [2023-11-12 01:03:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:35,470 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1590 transitions. [2023-11-12 01:03:35,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:35,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1590 transitions. [2023-11-12 01:03:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 01:03:35,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:35,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:35,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-12 01:03:35,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:35,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr531ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:35,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1735160665, now seen corresponding path program 1 times [2023-11-12 01:03:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:35,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855329146] [2023-11-12 01:03:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:35,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:35,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:35,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:35,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-12 01:03:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:35,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:35,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:35,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:03:35,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:03:35,909 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 01:03:35,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-12 01:03:35,988 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 01:03:35,989 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-12 01:03:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:36,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:36,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855329146] [2023-11-12 01:03:36,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855329146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:36,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:36,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:36,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411835110] [2023-11-12 01:03:36,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:36,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:36,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:36,016 INFO L87 Difference]: Start difference. First operand 1276 states and 1590 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-11-12 01:03:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:37,869 INFO L93 Difference]: Finished difference Result 1654 states and 2039 transitions. [2023-11-12 01:03:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:37,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2023-11-12 01:03:37,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:37,877 INFO L225 Difference]: With dead ends: 1654 [2023-11-12 01:03:37,877 INFO L226 Difference]: Without dead ends: 1654 [2023-11-12 01:03:37,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:37,879 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 377 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:37,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2909 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 01:03:37,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2023-11-12 01:03:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1275. [2023-11-12 01:03:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 817 states have (on average 1.9216646266829864) internal successors, (1570), 1268 states have internal predecessors, (1570), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1588 transitions. [2023-11-12 01:03:37,914 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1588 transitions. Word has length 12 [2023-11-12 01:03:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:37,915 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1588 transitions. [2023-11-12 01:03:37,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1588 transitions. [2023-11-12 01:03:37,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 01:03:37,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:37,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:37,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-12 01:03:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:38,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:38,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:38,129 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-12 01:03:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:38,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213780763] [2023-11-12 01:03:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:38,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:38,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:38,131 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:38,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-12 01:03:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:38,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 01:03:38,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:38,358 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:38,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:38,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213780763] [2023-11-12 01:03:38,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213780763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:38,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:38,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:38,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27250552] [2023-11-12 01:03:38,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:38,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:03:38,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:03:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:38,361 INFO L87 Difference]: Start difference. First operand 1275 states and 1588 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:38,404 INFO L93 Difference]: Finished difference Result 1215 states and 1502 transitions. [2023-11-12 01:03:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:03:38,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 01:03:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:38,411 INFO L225 Difference]: With dead ends: 1215 [2023-11-12 01:03:38,411 INFO L226 Difference]: Without dead ends: 1215 [2023-11-12 01:03:38,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:03:38,412 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 81 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:38,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1930 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-11-12 01:03:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2023-11-12 01:03:38,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 781 states have (on average 1.9001280409731114) internal successors, (1484), 1208 states have internal predecessors, (1484), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:38,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1502 transitions. [2023-11-12 01:03:38,447 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1502 transitions. Word has length 18 [2023-11-12 01:03:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:38,447 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1502 transitions. [2023-11-12 01:03:38,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1502 transitions. [2023-11-12 01:03:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 01:03:38,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:38,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:38,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:38,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:38,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:38,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:38,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-12 01:03:38,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:38,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666137401] [2023-11-12 01:03:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:38,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:38,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:38,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:38,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-12 01:03:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:38,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:38,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:38,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:38,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:38,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666137401] [2023-11-12 01:03:38,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666137401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:38,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:38,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215510892] [2023-11-12 01:03:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:38,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:38,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:38,941 INFO L87 Difference]: Start difference. First operand 1215 states and 1502 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:39,029 INFO L93 Difference]: Finished difference Result 1187 states and 1446 transitions. [2023-11-12 01:03:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-12 01:03:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:39,036 INFO L225 Difference]: With dead ends: 1187 [2023-11-12 01:03:39,036 INFO L226 Difference]: Without dead ends: 1187 [2023-11-12 01:03:39,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:39,039 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 62 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:39,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 2834 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:03:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2023-11-12 01:03:39,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2023-11-12 01:03:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 765 states have (on average 1.8640522875816994) internal successors, (1426), 1178 states have internal predecessors, (1426), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1444 transitions. [2023-11-12 01:03:39,067 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1444 transitions. Word has length 20 [2023-11-12 01:03:39,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:39,068 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1444 transitions. [2023-11-12 01:03:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:39,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1444 transitions. [2023-11-12 01:03:39,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 01:03:39,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:39,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:39,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:39,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:39,282 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:39,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-12 01:03:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:39,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757191265] [2023-11-12 01:03:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:39,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:39,284 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:39,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-12 01:03:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:39,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 01:03:39,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:39,511 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:03:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:39,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:39,613 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:39,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757191265] [2023-11-12 01:03:39,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757191265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:39,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:39,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:39,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947252241] [2023-11-12 01:03:39,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:39,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:39,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:39,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:39,616 INFO L87 Difference]: Start difference. First operand 1185 states and 1444 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:42,634 INFO L93 Difference]: Finished difference Result 1638 states and 2019 transitions. [2023-11-12 01:03:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:42,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-12 01:03:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:42,643 INFO L225 Difference]: With dead ends: 1638 [2023-11-12 01:03:42,643 INFO L226 Difference]: Without dead ends: 1638 [2023-11-12 01:03:42,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:42,644 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 921 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:42,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1232 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 01:03:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-11-12 01:03:42,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1181. [2023-11-12 01:03:42,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 765 states have (on average 1.8535947712418301) internal successors, (1418), 1174 states have internal predecessors, (1418), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:42,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1436 transitions. [2023-11-12 01:03:42,676 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1436 transitions. Word has length 34 [2023-11-12 01:03:42,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:42,676 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1436 transitions. [2023-11-12 01:03:42,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1436 transitions. [2023-11-12 01:03:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 01:03:42,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:42,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:42,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-12 01:03:42,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:42,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:42,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-12 01:03:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:42,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435134784] [2023-11-12 01:03:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:42,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:42,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:42,894 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:42,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-12 01:03:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:43,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 01:03:43,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:43,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:03:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:43,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:43,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435134784] [2023-11-12 01:03:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435134784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:43,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:43,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:43,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583436532] [2023-11-12 01:03:43,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:43,400 INFO L87 Difference]: Start difference. First operand 1181 states and 1436 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:47,769 INFO L93 Difference]: Finished difference Result 1773 states and 2179 transitions. [2023-11-12 01:03:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-12 01:03:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:47,779 INFO L225 Difference]: With dead ends: 1773 [2023-11-12 01:03:47,779 INFO L226 Difference]: Without dead ends: 1773 [2023-11-12 01:03:47,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:47,780 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 608 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:47,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 2425 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-12 01:03:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2023-11-12 01:03:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1177. [2023-11-12 01:03:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 765 states have (on average 1.8431372549019607) internal successors, (1410), 1170 states have internal predecessors, (1410), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1428 transitions. [2023-11-12 01:03:47,809 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1428 transitions. Word has length 34 [2023-11-12 01:03:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:47,809 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1428 transitions. [2023-11-12 01:03:47,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1428 transitions. [2023-11-12 01:03:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-12 01:03:47,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:47,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:47,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-12 01:03:48,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:48,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:48,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash -585509776, now seen corresponding path program 1 times [2023-11-12 01:03:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:48,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013920641] [2023-11-12 01:03:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:48,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:48,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:48,027 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:48,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-12 01:03:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:48,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 01:03:48,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:48,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:48,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:48,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013920641] [2023-11-12 01:03:48,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013920641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:48,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:48,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 01:03:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279816714] [2023-11-12 01:03:48,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:48,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:48,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:48,374 INFO L87 Difference]: Start difference. First operand 1177 states and 1428 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:03:48,443 INFO L93 Difference]: Finished difference Result 1165 states and 1408 transitions. [2023-11-12 01:03:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:03:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 53 [2023-11-12 01:03:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:03:48,449 INFO L225 Difference]: With dead ends: 1165 [2023-11-12 01:03:48,450 INFO L226 Difference]: Without dead ends: 1165 [2023-11-12 01:03:48,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 01:03:48,451 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 31 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:03:48,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2812 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:03:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2023-11-12 01:03:48,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2023-11-12 01:03:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 753 states have (on average 1.845949535192563) internal successors, (1390), 1158 states have internal predecessors, (1390), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-12 01:03:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1408 transitions. [2023-11-12 01:03:48,485 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1408 transitions. Word has length 53 [2023-11-12 01:03:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:03:48,485 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1408 transitions. [2023-11-12 01:03:48,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:03:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1408 transitions. [2023-11-12 01:03:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 01:03:48,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:03:48,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:03:48,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-12 01:03:48,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:48,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 530 more)] === [2023-11-12 01:03:48,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:03:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1514336476, now seen corresponding path program 1 times [2023-11-12 01:03:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 01:03:48,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044869709] [2023-11-12 01:03:48,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:03:48,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-12 01:03:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 01:03:48,706 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-12 01:03:48,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22f85d44-e3bb-47c4-ba26-038b0698911b/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-12 01:03:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:03:49,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 01:03:49,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:03:49,175 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-12 01:03:49,184 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-12 01:03:49,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 01:03:49,818 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-12 01:03:49,834 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 01:03:49,835 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-12 01:03:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:03:49,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 01:03:49,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 01:03:49,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044869709] [2023-11-12 01:03:49,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044869709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:03:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:03:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:03:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420290344] [2023-11-12 01:03:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:03:49,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:03:49,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 01:03:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:03:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:03:49,859 INFO L87 Difference]: Start difference. First operand 1165 states and 1408 transitions. Second operand has 4 states, 3 states have (on average 20.333333333333332) internal successors, (61), 4 states have internal predecessors, (61), 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)