./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91 --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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:43,418 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:43,514 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-24 23:48:43,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:43,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:43,570 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:43,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:43,571 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:43,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:43,577 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:43,578 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:43,579 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:43,579 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:43,581 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:48:43,581 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:43,582 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:43,582 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:48:43,584 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:48:43,584 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:43,585 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:48:43,585 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:48:43,586 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:48:43,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:48:43,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:48:43,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:43,589 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:48:43,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:43,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:48:43,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:43,590 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:48:43,591 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:48:43,591 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:48:43,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:43,592 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:48:43,592 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:48:43,593 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:48:43,593 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:43,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:43,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:43,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:43,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:43,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:43,595 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:43,595 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:48:43,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:48:43,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:43,596 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:43,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:43,596 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_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2023-11-24 23:48:43,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:43,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:43,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:43,969 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:43,971 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:43,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-24 23:48:47,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:47,412 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:47,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-24 23:48:47,442 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data/87ce2c0bb/df5c5f8a6c3f44bb8464c736052c50ee/FLAG284ab2cc1 [2023-11-24 23:48:47,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data/87ce2c0bb/df5c5f8a6c3f44bb8464c736052c50ee [2023-11-24 23:48:47,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:47,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:47,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:47,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:47,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:47,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:47" (1/1) ... [2023-11-24 23:48:47,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@686ba61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:47, skipping insertion in model container [2023-11-24 23:48:47,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:47" (1/1) ... [2023-11-24 23:48:47,555 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:48,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:48,372 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) [2023-11-24 23:48:48,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1d10c52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:48, skipping insertion in model container [2023-11-24 23:48:48,376 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:48,377 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:48:48,379 INFO L158 Benchmark]: Toolchain (without parser) took 916.26ms. Allocated memory is still 157.3MB. Free memory was 122.5MB in the beginning and 101.7MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:48:48,380 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:48:48,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 913.58ms. Allocated memory is still 157.3MB. Free memory was 121.9MB in the beginning and 101.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:48:48,384 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 913.58ms. Allocated memory is still 157.3MB. Free memory was 121.9MB in the beginning and 101.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91 --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 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:48:50,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:48:50,898 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-24 23:48:50,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:48:50,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:48:50,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:48:50,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:48:50,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:48:50,953 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:48:50,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:48:50,956 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:48:50,957 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:48:50,957 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:48:50,958 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:48:50,958 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:48:50,959 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:48:50,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:48:50,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:48:50,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:48:50,961 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:48:50,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:48:50,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:48:50,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:48:50,963 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:48:50,964 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:48:50,964 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:48:50,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:48:50,965 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:48:50,966 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:48:50,966 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:48:50,968 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:48:50,968 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:48:50,968 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:48:50,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:48:50,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:48:50,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:48:50,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:48:50,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:50,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:48:50,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:48:50,971 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:48:50,972 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:48:50,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:48:50,972 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:48:50,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:48:50,973 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_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2023-11-24 23:48:51,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:48:51,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:48:51,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:48:51,467 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:48:51,468 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:48:51,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-24 23:48:54,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:48:55,154 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:48:55,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test2-2.i [2023-11-24 23:48:55,179 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data/e758ff7ab/55fc1ca8bec54af294705900c1cf5384/FLAG4561d6aca [2023-11-24 23:48:55,202 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/data/e758ff7ab/55fc1ca8bec54af294705900c1cf5384 [2023-11-24 23:48:55,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:48:55,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:48:55,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:55,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:48:55,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:48:55,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:55" (1/1) ... [2023-11-24 23:48:55,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc32d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:55, skipping insertion in model container [2023-11-24 23:48:55,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:48:55" (1/1) ... [2023-11-24 23:48:55,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:55,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:55,990 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:48:56,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:48:56,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:56,145 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:48:56,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:48:56,282 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:48:56,290 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:48:56,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56 WrapperNode [2023-11-24 23:48:56,291 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:48:56,292 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:56,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:48:56,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:48:56,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,444 INFO L138 Inliner]: procedures = 210, calls = 281, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1040 [2023-11-24 23:48:56,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:48:56,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:48:56,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:48:56,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:48:56,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:48:56,656 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:48:56,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:48:56,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:48:56,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (1/1) ... [2023-11-24 23:48:56,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:48:56,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:48:56,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:48:56,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:48:56,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:48:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:48:56,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:48:56,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:48:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:48:56,772 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:48:56,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:48:56,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:48:56,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:48:56,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:48:56,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:48:56,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:48:56,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:48:56,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:48:56,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:48:57,051 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:48:57,053 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:48:57,058 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 23:49:02,425 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:49:02,629 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:49:02,629 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-24 23:49:02,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:02 BoogieIcfgContainer [2023-11-24 23:49:02,630 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:49:02,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:49:02,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:49:02,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:49:02,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:48:55" (1/3) ... [2023-11-24 23:49:02,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec4f6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:02, skipping insertion in model container [2023-11-24 23:49:02,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:48:56" (2/3) ... [2023-11-24 23:49:02,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec4f6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:49:02, skipping insertion in model container [2023-11-24 23:49:02,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:49:02" (3/3) ... [2023-11-24 23:49:02,640 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test2-2.i [2023-11-24 23:49:02,659 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:49:02,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2023-11-24 23:49:02,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:49:02,757 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;@424086c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:49:02,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2023-11-24 23:49:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 430 states have (on average 2.5209302325581397) internal successors, (1084), 958 states have internal predecessors, (1084), 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) [2023-11-24 23:49:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:49:02,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:02,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:49:02,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:02,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:02,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1655356, now seen corresponding path program 1 times [2023-11-24 23:49:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134796065] [2023-11-24 23:49:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:02,794 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 [2023-11-24 23:49:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:02,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:02,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:03,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:03,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:03,116 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 [2023-11-24 23:49:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:03,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:03,148 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:03,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134796065] [2023-11-24 23:49:03,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134796065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:03,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:03,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:49:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410174849] [2023-11-24 23:49:03,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:03,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:03,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:03,203 INFO L87 Difference]: Start difference. First operand has 963 states, 430 states have (on average 2.5209302325581397) internal successors, (1084), 958 states have internal predecessors, (1084), 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) [2023-11-24 23:49:05,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:05,883 INFO L93 Difference]: Finished difference Result 1116 states and 1183 transitions. [2023-11-24 23:49:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:05,888 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 [2023-11-24 23:49:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:05,911 INFO L225 Difference]: With dead ends: 1116 [2023-11-24 23:49:05,911 INFO L226 Difference]: Without dead ends: 1115 [2023-11-24 23:49:05,913 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 [2023-11-24 23:49:05,917 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 893 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:05,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 642 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 23:49:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-11-24 23:49:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 950. [2023-11-24 23:49:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 433 states have (on average 2.3163972286374133) internal successors, (1003), 945 states have internal predecessors, (1003), 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) [2023-11-24 23:49:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1009 transitions. [2023-11-24 23:49:06,014 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1009 transitions. Word has length 3 [2023-11-24 23:49:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:06,014 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1009 transitions. [2023-11-24 23:49:06,015 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) [2023-11-24 23:49:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1009 transitions. [2023-11-24 23:49:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:49:06,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:06,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:49:06,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:06,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:06,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:06,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:06,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1655357, now seen corresponding path program 1 times [2023-11-24 23:49:06,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:06,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023980727] [2023-11-24 23:49:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:06,220 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 [2023-11-24 23:49:06,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:06,222 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:06,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:06,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:06,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:06,355 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 [2023-11-24 23:49:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:06,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:06,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:06,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023980727] [2023-11-24 23:49:06,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023980727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:06,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:49:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965346935] [2023-11-24 23:49:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:06,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:06,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:06,381 INFO L87 Difference]: Start difference. First operand 950 states and 1009 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) [2023-11-24 23:49:10,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:10,512 INFO L93 Difference]: Finished difference Result 1318 states and 1409 transitions. [2023-11-24 23:49:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:10,513 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 [2023-11-24 23:49:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:10,519 INFO L225 Difference]: With dead ends: 1318 [2023-11-24 23:49:10,519 INFO L226 Difference]: Without dead ends: 1318 [2023-11-24 23:49:10,519 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 [2023-11-24 23:49:10,521 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 400 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:10,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1225 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-24 23:49:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2023-11-24 23:49:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1051. [2023-11-24 23:49:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 535 states have (on average 2.2542056074766355) internal successors, (1206), 1046 states have internal predecessors, (1206), 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) [2023-11-24 23:49:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1212 transitions. [2023-11-24 23:49:10,577 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1212 transitions. Word has length 3 [2023-11-24 23:49:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:10,578 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1212 transitions. [2023-11-24 23:49:10,578 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) [2023-11-24 23:49:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1212 transitions. [2023-11-24 23:49:10,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:49:10,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:10,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 23:49:10,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-24 23:49:10,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:10,780 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr530ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:10,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:10,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1656956, now seen corresponding path program 1 times [2023-11-24 23:49:10,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:10,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870502363] [2023-11-24 23:49:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:10,782 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 [2023-11-24 23:49:10,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:10,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:10,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:10,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:10,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:10,949 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 [2023-11-24 23:49:10,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:10,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:10,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870502363] [2023-11-24 23:49:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870502363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:10,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:10,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547374740] [2023-11-24 23:49:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:10,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:10,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:10,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 23:49:10,955 INFO L87 Difference]: Start difference. First operand 1051 states and 1212 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) [2023-11-24 23:49:14,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:14,212 INFO L93 Difference]: Finished difference Result 1305 states and 1394 transitions. [2023-11-24 23:49:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:14,213 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 [2023-11-24 23:49:14,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:14,220 INFO L225 Difference]: With dead ends: 1305 [2023-11-24 23:49:14,220 INFO L226 Difference]: Without dead ends: 1304 [2023-11-24 23:49:14,221 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 [2023-11-24 23:49:14,222 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 384 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1384 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:14,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1223 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 781 Invalid, 0 Unknown, 1384 Unchecked, 3.2s Time] [2023-11-24 23:49:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2023-11-24 23:49:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1051. [2023-11-24 23:49:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 535 states have (on average 2.2523364485981308) internal successors, (1205), 1046 states have internal predecessors, (1205), 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) [2023-11-24 23:49:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1211 transitions. [2023-11-24 23:49:14,253 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1211 transitions. Word has length 3 [2023-11-24 23:49:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:14,254 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1211 transitions. [2023-11-24 23:49:14,254 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) [2023-11-24 23:49:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1211 transitions. [2023-11-24 23:49:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:49:14,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:14,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:14,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:14,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:14,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:14,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash -252537274, now seen corresponding path program 1 times [2023-11-24 23:49:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582727410] [2023-11-24 23:49:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:14,459 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 [2023-11-24 23:49:14,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:14,460 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:14,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:14,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:49:14,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:14,645 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 [2023-11-24 23:49:14,657 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 [2023-11-24 23:49:14,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:49:14,772 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 [2023-11-24 23:49:14,795 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 23:49:14,795 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 [2023-11-24 23:49:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:14,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:14,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:14,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582727410] [2023-11-24 23:49:14,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582727410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:14,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:14,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:14,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984150746] [2023-11-24 23:49:14,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:14,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:14,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:14,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:14,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:14,832 INFO L87 Difference]: Start difference. First operand 1051 states and 1211 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) [2023-11-24 23:49:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:19,321 INFO L93 Difference]: Finished difference Result 1205 states and 1373 transitions. [2023-11-24 23:49:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:19,322 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 [2023-11-24 23:49:19,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:19,329 INFO L225 Difference]: With dead ends: 1205 [2023-11-24 23:49:19,329 INFO L226 Difference]: Without dead ends: 1205 [2023-11-24 23:49:19,329 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 [2023-11-24 23:49:19,330 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1146 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:19,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 315 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-24 23:49:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2023-11-24 23:49:19,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 939. [2023-11-24 23:49:19,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 433 states have (on average 2.2863741339491916) internal successors, (990), 934 states have internal predecessors, (990), 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) [2023-11-24 23:49:19,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 996 transitions. [2023-11-24 23:49:19,370 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 996 transitions. Word has length 7 [2023-11-24 23:49:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:19,370 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 996 transitions. [2023-11-24 23:49:19,370 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) [2023-11-24 23:49:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 996 transitions. [2023-11-24 23:49:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:49:19,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:19,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:19,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-24 23:49:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:19,574 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:19,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash 761279077, now seen corresponding path program 1 times [2023-11-24 23:49:19,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:19,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47102353] [2023-11-24 23:49:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:19,576 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 [2023-11-24 23:49:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:19,578 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:19,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:19,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:19,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:19,740 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 [2023-11-24 23:49:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:19,752 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:19,752 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:19,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47102353] [2023-11-24 23:49:19,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47102353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:19,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:19,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095197493] [2023-11-24 23:49:19,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:19,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:19,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:19,754 INFO L87 Difference]: Start difference. First operand 939 states and 996 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) [2023-11-24 23:49:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:22,149 INFO L93 Difference]: Finished difference Result 1079 states and 1157 transitions. [2023-11-24 23:49:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:22,151 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 [2023-11-24 23:49:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:22,156 INFO L225 Difference]: With dead ends: 1079 [2023-11-24 23:49:22,157 INFO L226 Difference]: Without dead ends: 1079 [2023-11-24 23:49:22,157 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 [2023-11-24 23:49:22,158 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 719 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:22,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 914 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-24 23:49:22,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2023-11-24 23:49:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 892. [2023-11-24 23:49:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 433 states have (on average 2.1778290993071594) internal successors, (943), 887 states have internal predecessors, (943), 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) [2023-11-24 23:49:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 949 transitions. [2023-11-24 23:49:22,182 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 949 transitions. Word has length 8 [2023-11-24 23:49:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:22,183 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 949 transitions. [2023-11-24 23:49:22,183 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) [2023-11-24 23:49:22,183 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 949 transitions. [2023-11-24 23:49:22,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:49:22,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:22,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:22,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:22,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:22,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash 761279078, now seen corresponding path program 1 times [2023-11-24 23:49:22,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:22,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229664270] [2023-11-24 23:49:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:22,388 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 [2023-11-24 23:49:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:22,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:22,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:22,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:49:22,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:22,597 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 [2023-11-24 23:49:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:22,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:22,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:22,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229664270] [2023-11-24 23:49:22,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229664270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:22,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:22,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:22,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557519092] [2023-11-24 23:49:22,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:22,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:22,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:22,636 INFO L87 Difference]: Start difference. First operand 892 states and 949 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) [2023-11-24 23:49:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:26,023 INFO L93 Difference]: Finished difference Result 1137 states and 1218 transitions. [2023-11-24 23:49:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:26,024 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 [2023-11-24 23:49:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:26,030 INFO L225 Difference]: With dead ends: 1137 [2023-11-24 23:49:26,030 INFO L226 Difference]: Without dead ends: 1137 [2023-11-24 23:49:26,031 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 [2023-11-24 23:49:26,032 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 437 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:26,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1198 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-24 23:49:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-11-24 23:49:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 905. [2023-11-24 23:49:26,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 456 states have (on average 2.1710526315789473) internal successors, (990), 900 states have internal predecessors, (990), 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) [2023-11-24 23:49:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 996 transitions. [2023-11-24 23:49:26,056 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 996 transitions. Word has length 8 [2023-11-24 23:49:26,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:26,057 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 996 transitions. [2023-11-24 23:49:26,057 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) [2023-11-24 23:49:26,057 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 996 transitions. [2023-11-24 23:49:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:49:26,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:26,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:26,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-24 23:49:26,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:26,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr425REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:26,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1099772851, now seen corresponding path program 1 times [2023-11-24 23:49:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1829331462] [2023-11-24 23:49:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:26,262 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 [2023-11-24 23:49:26,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:26,263 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:26,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:26,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:26,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:26,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:26,490 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:26,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1829331462] [2023-11-24 23:49:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1829331462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:26,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989733109] [2023-11-24 23:49:26,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:26,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:26,493 INFO L87 Difference]: Start difference. First operand 905 states and 996 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:28,144 INFO L93 Difference]: Finished difference Result 1323 states and 1449 transitions. [2023-11-24 23:49:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:28,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-24 23:49:28,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:28,153 INFO L225 Difference]: With dead ends: 1323 [2023-11-24 23:49:28,153 INFO L226 Difference]: Without dead ends: 1323 [2023-11-24 23:49:28,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:28,155 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 503 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:28,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1566 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-24 23:49:28,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2023-11-24 23:49:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 1048. [2023-11-24 23:49:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 599 states have (on average 2.0901502504173624) internal successors, (1252), 1043 states have internal predecessors, (1252), 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) [2023-11-24 23:49:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1258 transitions. [2023-11-24 23:49:28,201 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1258 transitions. Word has length 11 [2023-11-24 23:49:28,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:28,201 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1258 transitions. [2023-11-24 23:49:28,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:49:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1258 transitions. [2023-11-24 23:49:28,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:49:28,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:28,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:28,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-24 23:49:28,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:28,406 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:28,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash -24672753, now seen corresponding path program 1 times [2023-11-24 23:49:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560668183] [2023-11-24 23:49:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:28,408 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 [2023-11-24 23:49:28,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:28,409 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:28,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:28,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:49:28,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:28,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:28,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:28,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560668183] [2023-11-24 23:49:28,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560668183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:28,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:28,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126741239] [2023-11-24 23:49:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:28,600 INFO L87 Difference]: Start difference. First operand 1048 states and 1258 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) [2023-11-24 23:49:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:29,631 INFO L93 Difference]: Finished difference Result 994 states and 1178 transitions. [2023-11-24 23:49:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:29,634 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 [2023-11-24 23:49:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:29,639 INFO L225 Difference]: With dead ends: 994 [2023-11-24 23:49:29,639 INFO L226 Difference]: Without dead ends: 994 [2023-11-24 23:49:29,639 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 [2023-11-24 23:49:29,640 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 70 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:29,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1505 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 23:49:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2023-11-24 23:49:29,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 994. [2023-11-24 23:49:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 569 states have (on average 2.0597539543057994) internal successors, (1172), 989 states have internal predecessors, (1172), 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) [2023-11-24 23:49:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1178 transitions. [2023-11-24 23:49:29,663 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1178 transitions. Word has length 13 [2023-11-24 23:49:29,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:29,664 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1178 transitions. [2023-11-24 23:49:29,664 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) [2023-11-24 23:49:29,664 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1178 transitions. [2023-11-24 23:49:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:49:29,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:29,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:29,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:29,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:29,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr530ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:29,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:29,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1329585379, now seen corresponding path program 1 times [2023-11-24 23:49:29,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:29,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830960095] [2023-11-24 23:49:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:29,868 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 [2023-11-24 23:49:29,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:29,870 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:29,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:30,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:49:30,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:30,214 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 [2023-11-24 23:49:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:30,214 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:30,215 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:30,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830960095] [2023-11-24 23:49:30,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830960095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:30,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:30,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:49:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381847629] [2023-11-24 23:49:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:30,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:30,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:30,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 23:49:30,217 INFO L87 Difference]: Start difference. First operand 994 states and 1178 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 23:49:32,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:32,709 INFO L93 Difference]: Finished difference Result 1242 states and 1446 transitions. [2023-11-24 23:49:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-11-24 23:49:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:32,715 INFO L225 Difference]: With dead ends: 1242 [2023-11-24 23:49:32,715 INFO L226 Difference]: Without dead ends: 1240 [2023-11-24 23:49:32,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-24 23:49:32,716 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 259 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1162 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:32,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1143 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 645 Invalid, 0 Unknown, 1162 Unchecked, 2.5s Time] [2023-11-24 23:49:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2023-11-24 23:49:32,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1053. [2023-11-24 23:49:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 628 states have (on average 2.015923566878981) internal successors, (1266), 1048 states have internal predecessors, (1266), 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) [2023-11-24 23:49:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1272 transitions. [2023-11-24 23:49:32,745 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1272 transitions. Word has length 14 [2023-11-24 23:49:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:32,745 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1272 transitions. [2023-11-24 23:49:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 23:49:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1272 transitions. [2023-11-24 23:49:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:49:32,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:32,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:32,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:32,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:32,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:32,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1329578469, now seen corresponding path program 1 times [2023-11-24 23:49:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:32,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002580602] [2023-11-24 23:49:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:32,952 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 [2023-11-24 23:49:32,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:32,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:32,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:33,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 23:49:33,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:33,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:33,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:33,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002580602] [2023-11-24 23:49:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002580602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:33,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:33,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:33,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932120276] [2023-11-24 23:49:33,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:33,192 INFO L87 Difference]: Start difference. First operand 1053 states and 1272 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 23:49:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:35,576 INFO L93 Difference]: Finished difference Result 1306 states and 1464 transitions. [2023-11-24 23:49:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 23:49:35,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2023-11-24 23:49:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:35,585 INFO L225 Difference]: With dead ends: 1306 [2023-11-24 23:49:35,586 INFO L226 Difference]: Without dead ends: 1302 [2023-11-24 23:49:35,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:49:35,587 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 469 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:35,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 2235 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-24 23:49:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2023-11-24 23:49:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1051. [2023-11-24 23:49:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 626 states have (on average 2.0175718849840254) internal successors, (1263), 1046 states have internal predecessors, (1263), 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) [2023-11-24 23:49:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1269 transitions. [2023-11-24 23:49:35,614 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1269 transitions. Word has length 14 [2023-11-24 23:49:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:35,614 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1269 transitions. [2023-11-24 23:49:35,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-24 23:49:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1269 transitions. [2023-11-24 23:49:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:49:35,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:35,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:35,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:35,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:35,819 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:35,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2059313513, now seen corresponding path program 1 times [2023-11-24 23:49:35,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:35,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5201863] [2023-11-24 23:49:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:35,820 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 [2023-11-24 23:49:35,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:35,822 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:35,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:35,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:35,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:36,018 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:36,018 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:36,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5201863] [2023-11-24 23:49:36,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5201863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:36,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:36,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:36,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268310913] [2023-11-24 23:49:36,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:36,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:36,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:36,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:36,020 INFO L87 Difference]: Start difference. First operand 1051 states and 1269 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) [2023-11-24 23:49:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:37,387 INFO L93 Difference]: Finished difference Result 1037 states and 1206 transitions. [2023-11-24 23:49:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:49:37,389 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 [2023-11-24 23:49:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:37,393 INFO L225 Difference]: With dead ends: 1037 [2023-11-24 23:49:37,393 INFO L226 Difference]: Without dead ends: 1037 [2023-11-24 23:49:37,393 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 [2023-11-24 23:49:37,394 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 58 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:37,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2214 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-24 23:49:37,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2023-11-24 23:49:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1034. [2023-11-24 23:49:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 623 states have (on average 1.9213483146067416) internal successors, (1197), 1029 states have internal predecessors, (1197), 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) [2023-11-24 23:49:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1203 transitions. [2023-11-24 23:49:37,417 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1203 transitions. Word has length 15 [2023-11-24 23:49:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:37,417 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1203 transitions. [2023-11-24 23:49:37,418 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) [2023-11-24 23:49:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1203 transitions. [2023-11-24 23:49:37,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:49:37,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:37,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:37,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:37,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:37,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:37,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:37,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2122764860, now seen corresponding path program 1 times [2023-11-24 23:49:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014377439] [2023-11-24 23:49:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:37,625 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 [2023-11-24 23:49:37,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:37,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:37,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:49:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:37,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:49:37,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:37,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:37,841 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014377439] [2023-11-24 23:49:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014377439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:37,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:49:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940999537] [2023-11-24 23:49:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:37,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:49:37,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:37,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:49:37,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:49:37,844 INFO L87 Difference]: Start difference. First operand 1034 states and 1203 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) [2023-11-24 23:49:38,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:49:38,735 INFO L93 Difference]: Finished difference Result 980 states and 1123 transitions. [2023-11-24 23:49:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:49:38,736 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 [2023-11-24 23:49:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:49:38,740 INFO L225 Difference]: With dead ends: 980 [2023-11-24 23:49:38,741 INFO L226 Difference]: Without dead ends: 980 [2023-11-24 23:49:38,741 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 [2023-11-24 23:49:38,742 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 70 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:49:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1389 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 23:49:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-11-24 23:49:38,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2023-11-24 23:49:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 593 states have (on average 1.8836424957841484) internal successors, (1117), 975 states have internal predecessors, (1117), 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) [2023-11-24 23:49:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1123 transitions. [2023-11-24 23:49:38,761 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1123 transitions. Word has length 16 [2023-11-24 23:49:38,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:49:38,761 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1123 transitions. [2023-11-24 23:49:38,762 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) [2023-11-24 23:49:38,762 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1123 transitions. [2023-11-24 23:49:38,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:49:38,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:49:38,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:49:38,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-24 23:49:38,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:49:38,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 528 more)] === [2023-11-24 23:49:38,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:49:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -132438602, now seen corresponding path program 1 times [2023-11-24 23:49:38,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:49:38,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625240598] [2023-11-24 23:49:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:49:38,967 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 [2023-11-24 23:49:38,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:49:38,968 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:49:38,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20f11c72-ef05-46cf-9aed-61eb69b44e6f/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-24 23:49:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:49:39,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:49:39,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:49:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:49:39,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:49:39,177 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:49:39,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625240598] [2023-11-24 23:49:39,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625240598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:49:39,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:49:39,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:49:39,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322482453] [2023-11-24 23:49:39,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:49:39,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:49:39,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:49:39,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:49:39,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:49:39,180 INFO L87 Difference]: Start difference. First operand 980 states and 1123 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)