./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:37,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:37,688 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-23 21:14:37,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:37,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:37,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:37,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:37,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:37,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:37,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:37,742 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:37,743 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:37,744 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:37,748 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:14:37,750 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:37,750 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:37,751 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:14:37,751 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:14:37,752 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:37,752 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:14:37,753 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:14:37,753 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:14:37,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:14:37,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:14:37,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:37,756 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:37,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:37,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:37,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:37,758 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:14:37,760 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:14:37,760 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:14:37,760 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:37,761 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:14:37,761 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:14:37,761 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:37,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:37,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:37,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:37,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:37,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:37,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:37,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:37,764 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:14:37,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:14:37,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:37,766 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:37,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:37,766 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_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2023-11-23 21:14:38,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:38,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:38,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:38,097 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:38,098 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:38,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2023-11-23 21:14:41,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:41,639 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:41,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2023-11-23 21:14:41,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data/a6679673f/77b193161cfd45b5917a1655b4027d47/FLAG983bb1122 [2023-11-23 21:14:41,696 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data/a6679673f/77b193161cfd45b5917a1655b4027d47 [2023-11-23 21:14:41,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:41,705 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:41,707 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:41,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:41,713 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:41,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:41" (1/1) ... [2023-11-23 21:14:41,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffbc14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:41, skipping insertion in model container [2023-11-23 21:14:41,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:41" (1/1) ... [2023-11-23 21:14:41,820 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:42,175 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:42,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:42,527 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-23 21:14:42,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@388ec747 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:42, skipping insertion in model container [2023-11-23 21:14:42,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:42,529 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:14:42,531 INFO L158 Benchmark]: Toolchain (without parser) took 825.04ms. Allocated memory is still 144.7MB. Free memory was 115.5MB in the beginning and 98.8MB in the end (delta: 16.7MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-11-23 21:14:42,531 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory was 88.4MB in the beginning and 88.4MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:14:42,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 821.29ms. Allocated memory is still 144.7MB. Free memory was 115.3MB in the beginning and 98.8MB in the end (delta: 16.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-11-23 21:14:42,534 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory was 88.4MB in the beginning and 88.4MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 821.29ms. Allocated memory is still 144.7MB. Free memory was 115.3MB in the beginning and 98.8MB in the end (delta: 16.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 817]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:14:45,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:14:45,307 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-23 21:14:45,319 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:14:45,320 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:14:45,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:14:45,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:14:45,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:14:45,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:14:45,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:14:45,373 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:14:45,373 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:14:45,374 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:14:45,375 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:14:45,376 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:14:45,376 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:14:45,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:14:45,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:14:45,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:14:45,380 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:14:45,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:14:45,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:14:45,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:14:45,383 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:14:45,383 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:14:45,384 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:14:45,384 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:14:45,385 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:14:45,386 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:14:45,386 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:14:45,387 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:14:45,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:14:45,388 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:14:45,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:14:45,389 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:14:45,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:14:45,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:14:45,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:45,390 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:14:45,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:14:45,391 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:14:45,392 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:14:45,392 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:14:45,392 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:14:45,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:14:45,393 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_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2023-11-23 21:14:45,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:14:46,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:14:46,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:14:46,006 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:14:46,007 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:14:46,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2023-11-23 21:14:49,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:14:50,100 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:14:50,101 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2023-11-23 21:14:50,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data/e05f8e4c0/778b1d99978d4cdd96dc987594e8cec9/FLAG96e453369 [2023-11-23 21:14:50,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/data/e05f8e4c0/778b1d99978d4cdd96dc987594e8cec9 [2023-11-23 21:14:50,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:14:50,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:14:50,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:50,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:14:50,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:14:50,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:50" (1/1) ... [2023-11-23 21:14:50,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6d95ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:50, skipping insertion in model container [2023-11-23 21:14:50,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:14:50" (1/1) ... [2023-11-23 21:14:50,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:50,703 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:51,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:51,111 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:14:51,129 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:14:51,149 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:51,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:51,285 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:14:51,314 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:14:51,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:14:51,493 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:51,493 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:14:51,501 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:14:51,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51 WrapperNode [2023-11-23 21:14:51,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:14:51,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:51,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:14:51,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:14:51,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,579 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,657 INFO L138 Inliner]: procedures = 211, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 873 [2023-11-23 21:14:51,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:14:51,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:14:51,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:14:51,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:14:51,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,743 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:14:51,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:14:51,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:14:51,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:14:51,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (1/1) ... [2023-11-23 21:14:51,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:14:51,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:14:51,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:14:51,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:14:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:14:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:14:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 21:14:51,907 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 21:14:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:14:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:14:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:14:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:14:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:14:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:14:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:14:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:14:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:14:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:14:51,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:14:52,202 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:14:52,205 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:14:52,209 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-23 21:14:57,443 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:14:57,675 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:14:57,676 INFO L309 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-23 21:14:57,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:57 BoogieIcfgContainer [2023-11-23 21:14:57,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:14:57,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:14:57,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:14:57,689 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:14:57,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:14:50" (1/3) ... [2023-11-23 21:14:57,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6585f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:57, skipping insertion in model container [2023-11-23 21:14:57,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:14:51" (2/3) ... [2023-11-23 21:14:57,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6585f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:14:57, skipping insertion in model container [2023-11-23 21:14:57,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:14:57" (3/3) ... [2023-11-23 21:14:57,695 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test2-1.i [2023-11-23 21:14:57,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:14:57,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 426 error locations. [2023-11-23 21:14:57,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:14:57,834 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;@5b9b0c0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:14:57,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 426 error locations. [2023-11-23 21:14:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 780 states, 352 states have (on average 2.502840909090909) internal successors, (881), 775 states have internal predecessors, (881), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:14:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:14:57,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:57,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:14:57,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:14:57,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1412223, now seen corresponding path program 1 times [2023-11-23 21:14:57,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:14:57,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638044292] [2023-11-23 21:14:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:57,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:14:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:14:57,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:14:57,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:14:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:58,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:14:58,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:14:58,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:14:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:14:58,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:14:58,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:14:58,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638044292] [2023-11-23 21:14:58,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638044292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:58,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:14:58,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702590965] [2023-11-23 21:14:58,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:58,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:14:58,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:14:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:14:58,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:14:58,319 INFO L87 Difference]: Start difference. First operand has 780 states, 352 states have (on average 2.502840909090909) internal successors, (881), 775 states have internal predecessors, (881), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:00,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:00,495 INFO L93 Difference]: Finished difference Result 769 states and 816 transitions. [2023-11-23 21:15:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 21:15:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:00,523 INFO L225 Difference]: With dead ends: 769 [2023-11-23 21:15:00,523 INFO L226 Difference]: Without dead ends: 768 [2023-11-23 21:15:00,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:00,531 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 716 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:00,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 451 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 21:15:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2023-11-23 21:15:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 767. [2023-11-23 21:15:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 355 states have (on average 2.27887323943662) internal successors, (809), 762 states have internal predecessors, (809), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 815 transitions. [2023-11-23 21:15:00,673 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 815 transitions. Word has length 3 [2023-11-23 21:15:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:00,674 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 815 transitions. [2023-11-23 21:15:00,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 815 transitions. [2023-11-23 21:15:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:15:00,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:00,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:15:00,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 21:15:00,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:00,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:00,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1412224, now seen corresponding path program 1 times [2023-11-23 21:15:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:00,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124195943] [2023-11-23 21:15:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:00,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:00,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:00,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:15:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:01,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:15:01,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:01,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:15:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:01,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:01,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:01,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124195943] [2023-11-23 21:15:01,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124195943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:01,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:01,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:15:01,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781198651] [2023-11-23 21:15:01,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:01,090 INFO L87 Difference]: Start difference. First operand 767 states and 815 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:04,893 INFO L93 Difference]: Finished difference Result 952 states and 1021 transitions. [2023-11-23 21:15:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:04,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 21:15:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:04,902 INFO L225 Difference]: With dead ends: 952 [2023-11-23 21:15:04,902 INFO L226 Difference]: Without dead ends: 952 [2023-11-23 21:15:04,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:04,905 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 206 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:04,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1031 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-23 21:15:04,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-11-23 21:15:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 868. [2023-11-23 21:15:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 457 states have (on average 2.2144420131291027) internal successors, (1012), 863 states have internal predecessors, (1012), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1018 transitions. [2023-11-23 21:15:04,954 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1018 transitions. Word has length 3 [2023-11-23 21:15:04,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:04,954 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1018 transitions. [2023-11-23 21:15:04,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1018 transitions. [2023-11-23 21:15:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 21:15:04,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:04,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 21:15:04,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:05,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:05,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr425ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:05,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1413524, now seen corresponding path program 1 times [2023-11-23 21:15:05,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:05,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1822821096] [2023-11-23 21:15:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:05,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:05,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:05,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:05,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:15:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:05,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:15:05,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:05,350 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_53| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_53| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_53|)))) is different from true [2023-11-23 21:15:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:05,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:05,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:05,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1822821096] [2023-11-23 21:15:05,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1822821096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:05,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:05,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:05,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715225117] [2023-11-23 21:15:05,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:05,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:05,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:05,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-23 21:15:05,356 INFO L87 Difference]: Start difference. First operand 868 states and 1018 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:08,306 INFO L93 Difference]: Finished difference Result 953 states and 1021 transitions. [2023-11-23 21:15:08,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:08,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-23 21:15:08,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:08,314 INFO L225 Difference]: With dead ends: 953 [2023-11-23 21:15:08,314 INFO L226 Difference]: Without dead ends: 952 [2023-11-23 21:15:08,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-23 21:15:08,317 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 207 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1011 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:08,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1027 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 1011 Unchecked, 2.9s Time] [2023-11-23 21:15:08,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2023-11-23 21:15:08,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 868. [2023-11-23 21:15:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 457 states have (on average 2.212253829321663) internal successors, (1011), 863 states have internal predecessors, (1011), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1017 transitions. [2023-11-23 21:15:08,351 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1017 transitions. Word has length 3 [2023-11-23 21:15:08,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:08,351 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1017 transitions. [2023-11-23 21:15:08,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:08,352 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1017 transitions. [2023-11-23 21:15:08,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:15:08,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:08,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:08,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-23 21:15:08,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:08,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:08,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1452669175, now seen corresponding path program 1 times [2023-11-23 21:15:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358660854] [2023-11-23 21:15:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:08,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:08,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:08,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:08,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 21:15:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:08,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:15:08,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:08,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:15:08,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:15:08,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:15:08,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 21:15:08,911 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-23 21:15:08,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-23 21:15:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:08,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:08,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358660854] [2023-11-23 21:15:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358660854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:08,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137303332] [2023-11-23 21:15:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:08,957 INFO L87 Difference]: Start difference. First operand 868 states and 1017 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:12,505 INFO L93 Difference]: Finished difference Result 858 states and 1006 transitions. [2023-11-23 21:15:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:12,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 21:15:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:12,513 INFO L225 Difference]: With dead ends: 858 [2023-11-23 21:15:12,514 INFO L226 Difference]: Without dead ends: 858 [2023-11-23 21:15:12,514 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 [2023-11-23 21:15:12,515 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 781 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:12,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 220 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 21:15:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-11-23 21:15:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 756. [2023-11-23 21:15:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 355 states have (on average 2.2422535211267607) internal successors, (796), 751 states have internal predecessors, (796), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 802 transitions. [2023-11-23 21:15:12,546 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 802 transitions. Word has length 7 [2023-11-23 21:15:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:12,547 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 802 transitions. [2023-11-23 21:15:12,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 802 transitions. [2023-11-23 21:15:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:15:12,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:12,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:12,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:12,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:12,753 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:12,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2083071486, now seen corresponding path program 1 times [2023-11-23 21:15:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:12,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651827411] [2023-11-23 21:15:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:12,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:12,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:12,758 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:12,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:15:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:12,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:15:12,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:12,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:15:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:12,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:12,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651827411] [2023-11-23 21:15:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651827411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:12,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:12,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754700905] [2023-11-23 21:15:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:12,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:12,962 INFO L87 Difference]: Start difference. First operand 756 states and 802 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) [2023-11-23 21:15:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:15,442 INFO L93 Difference]: Finished difference Result 896 states and 963 transitions. [2023-11-23 21:15:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:15,444 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 [2023-11-23 21:15:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:15,450 INFO L225 Difference]: With dead ends: 896 [2023-11-23 21:15:15,451 INFO L226 Difference]: Without dead ends: 896 [2023-11-23 21:15:15,451 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 [2023-11-23 21:15:15,452 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 719 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:15,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 651 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 21:15:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-11-23 21:15:15,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 709. [2023-11-23 21:15:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 355 states have (on average 2.1098591549295773) internal successors, (749), 704 states have internal predecessors, (749), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:15,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 755 transitions. [2023-11-23 21:15:15,480 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 755 transitions. Word has length 8 [2023-11-23 21:15:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:15,480 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 755 transitions. [2023-11-23 21:15:15,481 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) [2023-11-23 21:15:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 755 transitions. [2023-11-23 21:15:15,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:15:15,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:15,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:15,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:15,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:15,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:15,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2083071485, now seen corresponding path program 1 times [2023-11-23 21:15:15,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:15,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834092474] [2023-11-23 21:15:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:15,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:15,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:15,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:15,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:15:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:15,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:15:15,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:15,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 21:15:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:15,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:15,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834092474] [2023-11-23 21:15:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834092474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:15,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:15,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543882293] [2023-11-23 21:15:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:15,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:15,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:15,950 INFO L87 Difference]: Start difference. First operand 709 states and 755 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) [2023-11-23 21:15:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:19,547 INFO L93 Difference]: Finished difference Result 956 states and 1025 transitions. [2023-11-23 21:15:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:19,549 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 [2023-11-23 21:15:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:19,554 INFO L225 Difference]: With dead ends: 956 [2023-11-23 21:15:19,554 INFO L226 Difference]: Without dead ends: 956 [2023-11-23 21:15:19,555 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 [2023-11-23 21:15:19,556 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 439 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:19,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 935 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 21:15:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-11-23 21:15:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 722. [2023-11-23 21:15:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 378 states have (on average 2.105820105820106) internal successors, (796), 717 states have internal predecessors, (796), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:19,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 802 transitions. [2023-11-23 21:15:19,585 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 802 transitions. Word has length 8 [2023-11-23 21:15:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:19,585 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 802 transitions. [2023-11-23 21:15:19,586 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) [2023-11-23 21:15:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 802 transitions. [2023-11-23 21:15:19,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:15:19,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:19,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:19,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:19,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:19,791 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr425ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:19,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 430543025, now seen corresponding path program 1 times [2023-11-23 21:15:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:19,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267887893] [2023-11-23 21:15:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:19,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:19,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:19,795 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:19,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 21:15:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:20,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:15:20,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:20,186 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_54| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_54|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_54| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-23 21:15:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:20,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:20,188 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:20,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267887893] [2023-11-23 21:15:20,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267887893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:20,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:20,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:20,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580575052] [2023-11-23 21:15:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:20,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:20,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:20,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-23 21:15:20,191 INFO L87 Difference]: Start difference. First operand 722 states and 802 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:22,851 INFO L93 Difference]: Finished difference Result 909 states and 1009 transitions. [2023-11-23 21:15:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-23 21:15:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:22,857 INFO L225 Difference]: With dead ends: 909 [2023-11-23 21:15:22,857 INFO L226 Difference]: Without dead ends: 907 [2023-11-23 21:15:22,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-23 21:15:22,859 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 200 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 943 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:22,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 950 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 521 Invalid, 0 Unknown, 943 Unchecked, 2.6s Time] [2023-11-23 21:15:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2023-11-23 21:15:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 824. [2023-11-23 21:15:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 480 states have (on average 2.08125) internal successors, (999), 819 states have internal predecessors, (999), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1005 transitions. [2023-11-23 21:15:22,893 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1005 transitions. Word has length 10 [2023-11-23 21:15:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:22,893 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1005 transitions. [2023-11-23 21:15:22,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1005 transitions. [2023-11-23 21:15:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:15:22,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:22,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:22,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:23,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:23,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1191843986, now seen corresponding path program 1 times [2023-11-23 21:15:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102861754] [2023-11-23 21:15:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:23,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:23,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:23,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:23,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 21:15:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:23,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:15:23,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:23,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:23,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:23,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102861754] [2023-11-23 21:15:23,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102861754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:23,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:23,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:23,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184323818] [2023-11-23 21:15:23,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:23,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:23,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:23,333 INFO L87 Difference]: Start difference. First operand 824 states and 1005 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:24,514 INFO L93 Difference]: Finished difference Result 770 states and 925 transitions. [2023-11-23 21:15:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-23 21:15:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:24,522 INFO L225 Difference]: With dead ends: 770 [2023-11-23 21:15:24,522 INFO L226 Difference]: Without dead ends: 770 [2023-11-23 21:15:24,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:24,523 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 70 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:24,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1153 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:15:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-11-23 21:15:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2023-11-23 21:15:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 450 states have (on average 2.042222222222222) internal successors, (919), 765 states have internal predecessors, (919), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 925 transitions. [2023-11-23 21:15:24,552 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 925 transitions. Word has length 13 [2023-11-23 21:15:24,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:24,553 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 925 transitions. [2023-11-23 21:15:24,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:24,553 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 925 transitions. [2023-11-23 21:15:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 21:15:24,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:24,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:24,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-23 21:15:24,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:24,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:24,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1394172116, now seen corresponding path program 1 times [2023-11-23 21:15:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:24,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13642405] [2023-11-23 21:15:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:24,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:24,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:24,761 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:24,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 21:15:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:24,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:15:24,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:24,974 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:24,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13642405] [2023-11-23 21:15:24,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13642405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:24,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:24,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:15:24,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774277100] [2023-11-23 21:15:24,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:24,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:24,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:24,979 INFO L87 Difference]: Start difference. First operand 770 states and 925 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:26,410 INFO L93 Difference]: Finished difference Result 756 states and 883 transitions. [2023-11-23 21:15:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:26,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-23 21:15:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:26,417 INFO L225 Difference]: With dead ends: 756 [2023-11-23 21:15:26,418 INFO L226 Difference]: Without dead ends: 756 [2023-11-23 21:15:26,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:26,419 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 58 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:26,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1686 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 21:15:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-11-23 21:15:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 754. [2023-11-23 21:15:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 448 states have (on average 1.953125) internal successors, (875), 749 states have internal predecessors, (875), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 881 transitions. [2023-11-23 21:15:26,447 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 881 transitions. Word has length 15 [2023-11-23 21:15:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:26,448 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 881 transitions. [2023-11-23 21:15:26,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 881 transitions. [2023-11-23 21:15:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:15:26,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:26,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:26,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-23 21:15:26,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:26,654 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:26,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1510130617, now seen corresponding path program 1 times [2023-11-23 21:15:26,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:26,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81022901] [2023-11-23 21:15:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:26,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:26,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:26,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:26,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-23 21:15:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:26,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:15:26,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:26,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:26,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:26,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81022901] [2023-11-23 21:15:26,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81022901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:26,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:26,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:26,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532992626] [2023-11-23 21:15:26,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:26,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:26,943 INFO L87 Difference]: Start difference. First operand 754 states and 881 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:27,930 INFO L93 Difference]: Finished difference Result 715 states and 841 transitions. [2023-11-23 21:15:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-23 21:15:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:27,936 INFO L225 Difference]: With dead ends: 715 [2023-11-23 21:15:27,936 INFO L226 Difference]: Without dead ends: 715 [2023-11-23 21:15:27,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:27,938 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 70 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:27,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1037 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:15:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-23 21:15:27,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2023-11-23 21:15:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 433 states have (on average 1.928406466512702) internal successors, (835), 710 states have internal predecessors, (835), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 841 transitions. [2023-11-23 21:15:27,959 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 841 transitions. Word has length 16 [2023-11-23 21:15:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:27,960 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 841 transitions. [2023-11-23 21:15:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 841 transitions. [2023-11-23 21:15:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:15:27,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:27,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:27,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:28,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:28,166 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:28,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:28,167 INFO L85 PathProgramCache]: Analyzing trace with hash -463426573, now seen corresponding path program 1 times [2023-11-23 21:15:28,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:28,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905677132] [2023-11-23 21:15:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:28,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:28,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:28,169 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:28,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 21:15:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:28,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:15:28,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:28,411 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:28,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:28,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905677132] [2023-11-23 21:15:28,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905677132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:28,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:15:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870057026] [2023-11-23 21:15:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:28,416 INFO L87 Difference]: Start difference. First operand 715 states and 841 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:29,629 INFO L93 Difference]: Finished difference Result 701 states and 820 transitions. [2023-11-23 21:15:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:29,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 21:15:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:29,636 INFO L225 Difference]: With dead ends: 701 [2023-11-23 21:15:29,636 INFO L226 Difference]: Without dead ends: 701 [2023-11-23 21:15:29,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:29,638 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 58 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:29,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1512 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:15:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2023-11-23 21:15:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 700. [2023-11-23 21:15:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 432 states have (on average 1.8819444444444444) internal successors, (813), 695 states have internal predecessors, (813), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:15:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 819 transitions. [2023-11-23 21:15:29,662 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 819 transitions. Word has length 18 [2023-11-23 21:15:29,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:29,663 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 819 transitions. [2023-11-23 21:15:29,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 819 transitions. [2023-11-23 21:15:29,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:29,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:29,667 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] [2023-11-23 21:15:29,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:15:29,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:29,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr378REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 423 more)] === [2023-11-23 21:15:29,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:29,873 INFO L85 PathProgramCache]: Analyzing trace with hash 467757914, now seen corresponding path program 1 times [2023-11-23 21:15:29,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:29,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400469983] [2023-11-23 21:15:29,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:29,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:29,875 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:15:29,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcb2f309-6dc8-4e9a-8754-452b893a1c09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-23 21:15:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:30,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:15:30,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:30,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-23 21:15:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:30,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:30,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:30,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400469983] [2023-11-23 21:15:30,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400469983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:30,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:30,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:30,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810817295] [2023-11-23 21:15:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:30,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:30,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:30,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:30,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:30,221 INFO L87 Difference]: Start difference. First operand 700 states and 819 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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)