./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 67499ec0709cfdcc368630c5b1d94f26157589b8bf16f22cf5d62554760c6dd7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:32,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:32,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-24 23:59:32,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:32,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:32,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:32,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:32,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:32,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:32,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:32,929 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:32,930 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:32,930 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:32,933 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:59:32,934 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:32,934 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:32,936 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:59:32,940 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:59:32,941 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:32,942 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:59:32,942 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:59:32,943 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:59:32,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:59:32,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:59:32,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:32,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:59:32,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:32,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:59:32,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:32,946 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:59:32,947 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:59:32,947 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:59:32,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:32,948 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:59:32,948 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:59:32,948 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:59:32,949 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:32,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:32,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:32,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:32,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:32,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:32,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:32,950 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:59:32,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:59:32,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:32,951 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:32,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:32,952 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_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67499ec0709cfdcc368630c5b1d94f26157589b8bf16f22cf5d62554760c6dd7 [2023-11-24 23:59:33,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:33,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:33,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:33,312 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:33,312 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:33,314 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2023-11-24 23:59:36,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:36,903 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:36,904 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2023-11-24 23:59:36,945 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data/3488af358/a6c07f40850e4ffe9cbfc62dd9f83910/FLAGb1b56bd72 [2023-11-24 23:59:36,967 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data/3488af358/a6c07f40850e4ffe9cbfc62dd9f83910 [2023-11-24 23:59:36,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:36,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:36,981 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:36,981 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:36,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:36,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:36" (1/1) ... [2023-11-24 23:59:36,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d198f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:36, skipping insertion in model container [2023-11-24 23:59:36,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:36" (1/1) ... [2023-11-24 23:59:37,083 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:37,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:37,740 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 23:59:37,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@33951f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:37, skipping insertion in model container [2023-11-24 23:59:37,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:37,742 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:59:37,744 INFO L158 Benchmark]: Toolchain (without parser) took 765.42ms. Allocated memory is still 199.2MB. Free memory was 151.2MB in the beginning and 131.5MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:59:37,745 INFO L158 Benchmark]: CDTParser took 0.80ms. Allocated memory is still 199.2MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:59:37,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 760.82ms. Allocated memory is still 199.2MB. Free memory was 150.9MB in the beginning and 131.5MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:59:37,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80ms. Allocated memory is still 199.2MB. Free memory is still 173.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 760.82ms. Allocated memory is still 199.2MB. Free memory was 150.9MB in the beginning and 131.5MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 67499ec0709cfdcc368630c5b1d94f26157589b8bf16f22cf5d62554760c6dd7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:40,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:40,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-24 23:59:40,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:40,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:40,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:40,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:40,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:40,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:40,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:40,412 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:40,413 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:40,413 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:40,415 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:40,415 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:40,416 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:40,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:59:40,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:59:40,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:40,418 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:59:40,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:40,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:59:40,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:40,420 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:59:40,420 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:59:40,421 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:59:40,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:40,422 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:59:40,422 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:59:40,423 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:59:40,424 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:59:40,424 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:59:40,425 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:40,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:40,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:59:40,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:40,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:40,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:40,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:40,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:40,428 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:59:40,428 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:59:40,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:40,428 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:40,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:40,429 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_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67499ec0709cfdcc368630c5b1d94f26157589b8bf16f22cf5d62554760c6dd7 [2023-11-24 23:59:40,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:40,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:40,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:40,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:40,868 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:40,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2023-11-24 23:59:44,058 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:44,441 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:44,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-1.i [2023-11-24 23:59:44,462 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data/487f8b5ee/c0086d4d213c43ba8d54ba63bc46feda/FLAG9fdbc50e5 [2023-11-24 23:59:44,486 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/data/487f8b5ee/c0086d4d213c43ba8d54ba63bc46feda [2023-11-24 23:59:44,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:44,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:44,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:44,497 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:44,502 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:44,503 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:44" (1/1) ... [2023-11-24 23:59:44,504 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54507727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:44, skipping insertion in model container [2023-11-24 23:59:44,504 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:44" (1/1) ... [2023-11-24 23:59:44,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:45,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:45,406 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:59:45,427 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:45,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:45,590 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:45,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:45,734 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:59:45,741 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:45,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45 WrapperNode [2023-11-24 23:59:45,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:45,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:45,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:45,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:45,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,853 INFO L138 Inliner]: procedures = 179, calls = 280, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1017 [2023-11-24 23:59:45,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:45,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:45,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:45,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:45,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:45,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:46,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:46,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:46,042 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:46,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:46,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:46,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:46,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:46,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (1/1) ... [2023-11-24 23:59:46,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:46,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:46,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:46,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:59:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:59:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:59:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:59:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:59:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:59:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:59:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:59:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:59:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:59:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:59:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:59:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:59:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:59:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:59:46,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:46,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:46,442 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:46,444 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:46,484 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 23:59:51,681 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:51,919 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:51,920 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-24 23:59:51,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:51 BoogieIcfgContainer [2023-11-24 23:59:51,921 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:51,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:51,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:51,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:51,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:44" (1/3) ... [2023-11-24 23:59:51,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bbdefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:51, skipping insertion in model container [2023-11-24 23:59:51,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:45" (2/3) ... [2023-11-24 23:59:51,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bbdefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:51, skipping insertion in model container [2023-11-24 23:59:51,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:51" (3/3) ... [2023-11-24 23:59:51,932 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-1.i [2023-11-24 23:59:51,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:51,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 529 error locations. [2023-11-24 23:59:52,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:59:52,038 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;@17fa6a79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:59:52,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2023-11-24 23:59:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 956 states, 422 states have (on average 2.537914691943128) internal successors, (1071), 949 states have internal predecessors, (1071), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 23:59:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:59:52,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:52,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:59:52,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-24 23:59:52,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 53652, now seen corresponding path program 1 times [2023-11-24 23:59:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:52,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047435149] [2023-11-24 23:59:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:52,079 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 23:59:52,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:52,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:52,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:52,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:59:52,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:52,352 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 23:59:52,364 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 23:59:52,365 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:59:52,365 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:59:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047435149] [2023-11-24 23:59:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047435149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:52,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:52,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:59:52,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412863455] [2023-11-24 23:59:52,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:52,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:59:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:59:52,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:59:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:59:52,409 INFO L87 Difference]: Start difference. First operand has 956 states, 422 states have (on average 2.537914691943128) internal successors, (1071), 949 states have internal predecessors, (1071), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 23:59:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:54,594 INFO L93 Difference]: Finished difference Result 950 states and 1005 transitions. [2023-11-24 23:59:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:59:54,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-24 23:59:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:54,617 INFO L225 Difference]: With dead ends: 950 [2023-11-24 23:59:54,618 INFO L226 Difference]: Without dead ends: 949 [2023-11-24 23:59:54,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 23:59:54,623 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 881 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:54,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 561 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 23:59:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-11-24 23:59:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 940. [2023-11-24 23:59:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 424 states have (on average 2.330188679245283) internal successors, (988), 934 states have internal predecessors, (988), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:59:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 996 transitions. [2023-11-24 23:59:54,733 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 996 transitions. Word has length 2 [2023-11-24 23:59:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:54,734 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 996 transitions. [2023-11-24 23:59:54,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 23:59:54,734 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 996 transitions. [2023-11-24 23:59:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:59:54,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:54,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:59:54,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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)] Ended with exit code 0 [2023-11-24 23:59:54,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:54,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-24 23:59:54,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash 53653, now seen corresponding path program 1 times [2023-11-24 23:59:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262738957] [2023-11-24 23:59:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:54,938 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 23:59:54,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:54,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:54,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:55,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:59:55,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:55,074 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 23:59:55,085 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 23:59:55,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:59:55,085 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:59:55,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262738957] [2023-11-24 23:59:55,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262738957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:55,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:55,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:59:55,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509784479] [2023-11-24 23:59:55,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:55,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:59:55,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:59:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:59:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:59:55,089 INFO L87 Difference]: Start difference. First operand 940 states and 996 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 23:59:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:59:59,082 INFO L93 Difference]: Finished difference Result 1296 states and 1383 transitions. [2023-11-24 23:59:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:59:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-24 23:59:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:59:59,092 INFO L225 Difference]: With dead ends: 1296 [2023-11-24 23:59:59,092 INFO L226 Difference]: Without dead ends: 1296 [2023-11-24 23:59:59,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 23:59:59,094 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 385 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:59:59,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1208 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-24 23:59:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-11-24 23:59:59,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1109. [2023-11-24 23:59:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 594 states have (on average 2.3047138047138045) internal successors, (1369), 1103 states have internal predecessors, (1369), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:59:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1377 transitions. [2023-11-24 23:59:59,136 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1377 transitions. Word has length 2 [2023-11-24 23:59:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:59:59,142 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1377 transitions. [2023-11-24 23:59:59,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 23:59:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1377 transitions. [2023-11-24 23:59:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:59:59,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:59:59,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:59:59,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:59,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:59,346 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-24 23:59:59,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:59:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1990944098, now seen corresponding path program 1 times [2023-11-24 23:59:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:59:59,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294399812] [2023-11-24 23:59:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:59:59,348 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 23:59:59,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:59:59,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:59,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 23:59:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:59:59,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:59:59,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:59:59,526 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 23:59:59,537 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 23:59:59,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:59:59,643 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 23:59:59,668 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 23:59:59,670 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 23:59:59,696 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 23:59:59,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:59:59,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:59:59,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294399812] [2023-11-24 23:59:59,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294399812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:59:59,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:59:59,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:59:59,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121739886] [2023-11-24 23:59:59,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:59:59,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:59:59,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:59:59,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:59:59,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:59:59,700 INFO L87 Difference]: Start difference. First operand 1109 states and 1377 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:03,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:03,069 INFO L93 Difference]: Finished difference Result 1112 states and 1382 transitions. [2023-11-25 00:00:03,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:03,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-25 00:00:03,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:03,077 INFO L225 Difference]: With dead ends: 1112 [2023-11-25 00:00:03,077 INFO L226 Difference]: Without dead ends: 1112 [2023-11-25 00:00:03,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:03,078 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 966 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:03,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 282 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-25 00:00:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-11-25 00:00:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 929. [2023-11-25 00:00:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 424 states have (on average 2.30188679245283) internal successors, (976), 923 states have internal predecessors, (976), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 984 transitions. [2023-11-25 00:00:03,106 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 984 transitions. Word has length 6 [2023-11-25 00:00:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:03,107 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 984 transitions. [2023-11-25 00:00:03,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:03,113 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 984 transitions. [2023-11-25 00:00:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:00:03,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:03,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:03,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:03,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:03,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:03,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:03,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1589724911, now seen corresponding path program 1 times [2023-11-25 00:00:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:03,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881167348] [2023-11-25 00:00:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:03,324 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 [2023-11-25 00:00:03,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:03,326 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:03,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:03,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:00:03,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:03,496 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 [2023-11-25 00:00:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:03,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:03,511 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881167348] [2023-11-25 00:00:03,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881167348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:03,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:03,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556213818] [2023-11-25 00:00:03,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:03,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:00:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:03,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:00:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:03,537 INFO L87 Difference]: Start difference. First operand 929 states and 984 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2023-11-25 00:00:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:06,270 INFO L93 Difference]: Finished difference Result 1225 states and 1310 transitions. [2023-11-25 00:00:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:00:06,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2023-11-25 00:00:06,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:06,279 INFO L225 Difference]: With dead ends: 1225 [2023-11-25 00:00:06,279 INFO L226 Difference]: Without dead ends: 1225 [2023-11-25 00:00:06,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:06,281 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 881 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:06,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 971 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-25 00:00:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-11-25 00:00:06,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 882. [2023-11-25 00:00:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 424 states have (on average 2.1910377358490565) internal successors, (929), 876 states have internal predecessors, (929), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 937 transitions. [2023-11-25 00:00:06,307 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 937 transitions. Word has length 7 [2023-11-25 00:00:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:06,308 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 937 transitions. [2023-11-25 00:00:06,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2023-11-25 00:00:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 937 transitions. [2023-11-25 00:00:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:00:06,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:06,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:06,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:06,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:06,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:06,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:06,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1589724910, now seen corresponding path program 1 times [2023-11-25 00:00:06,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:06,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126176150] [2023-11-25 00:00:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:06,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:00:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:06,514 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:06,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:06,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:00:06,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:06,658 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 [2023-11-25 00:00:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:06,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:06,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:06,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126176150] [2023-11-25 00:00:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126176150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109539942] [2023-11-25 00:00:06,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:06,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:00:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:00:06,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:06,709 INFO L87 Difference]: Start difference. First operand 882 states and 937 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2023-11-25 00:00:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:10,688 INFO L93 Difference]: Finished difference Result 1295 states and 1383 transitions. [2023-11-25 00:00:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:00:10,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2023-11-25 00:00:10,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:10,697 INFO L225 Difference]: With dead ends: 1295 [2023-11-25 00:00:10,698 INFO L226 Difference]: Without dead ends: 1295 [2023-11-25 00:00:10,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:10,699 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 613 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:10,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1272 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-25 00:00:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-11-25 00:00:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 895. [2023-11-25 00:00:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 447 states have (on average 2.1834451901565997) internal successors, (976), 889 states have internal predecessors, (976), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 984 transitions. [2023-11-25 00:00:10,727 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 984 transitions. Word has length 7 [2023-11-25 00:00:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:10,727 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 984 transitions. [2023-11-25 00:00:10,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2023-11-25 00:00:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 984 transitions. [2023-11-25 00:00:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-25 00:00:10,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:10,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:10,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:10,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:10,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr527ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:10,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:10,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1355457050, now seen corresponding path program 1 times [2023-11-25 00:00:10,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:10,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197509086] [2023-11-25 00:00:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:10,933 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 [2023-11-25 00:00:10,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:10,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:10,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:11,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:00:11,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:11,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:00:11,163 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:00:11,164 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-25 00:00:11,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-25 00:00:11,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-25 00:00:11,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-25 00:00:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:11,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:11,288 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:11,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197509086] [2023-11-25 00:00:11,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197509086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:11,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:11,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:00:11,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941272032] [2023-11-25 00:00:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:11,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:11,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:11,293 INFO L87 Difference]: Start difference. First operand 895 states and 984 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:13,813 INFO L93 Difference]: Finished difference Result 1207 states and 1323 transitions. [2023-11-25 00:00:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-25 00:00:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:13,820 INFO L225 Difference]: With dead ends: 1207 [2023-11-25 00:00:13,821 INFO L226 Difference]: Without dead ends: 1207 [2023-11-25 00:00:13,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:13,823 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 330 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:13,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2344 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-25 00:00:13,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-11-25 00:00:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 897. [2023-11-25 00:00:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 449 states have (on average 2.178173719376392) internal successors, (978), 891 states have internal predecessors, (978), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:13,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 986 transitions. [2023-11-25 00:00:13,856 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 986 transitions. Word has length 11 [2023-11-25 00:00:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:13,856 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 986 transitions. [2023-11-25 00:00:13,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 986 transitions. [2023-11-25 00:00:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-25 00:00:13,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:13,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:13,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:14,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:14,063 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:14,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash -481040215, now seen corresponding path program 1 times [2023-11-25 00:00:14,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:14,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066925442] [2023-11-25 00:00:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:14,064 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 [2023-11-25 00:00:14,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:14,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:14,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:14,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:00:14,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:14,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:14,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:14,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:14,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066925442] [2023-11-25 00:00:14,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066925442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:14,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:14,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:00:14,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114847087] [2023-11-25 00:00:14,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:14,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:00:14,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:14,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:00:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:14,301 INFO L87 Difference]: Start difference. First operand 897 states and 986 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:15,261 INFO L93 Difference]: Finished difference Result 858 states and 946 transitions. [2023-11-25 00:00:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:00:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-25 00:00:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:15,267 INFO L225 Difference]: With dead ends: 858 [2023-11-25 00:00:15,267 INFO L226 Difference]: Without dead ends: 858 [2023-11-25 00:00:15,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:15,273 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 70 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:15,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1485 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-25 00:00:15,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-11-25 00:00:15,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2023-11-25 00:00:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 434 states have (on average 2.161290322580645) internal successors, (938), 852 states have internal predecessors, (938), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:15,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 946 transitions. [2023-11-25 00:00:15,296 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 946 transitions. Word has length 15 [2023-11-25 00:00:15,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:15,297 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 946 transitions. [2023-11-25 00:00:15,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 946 transitions. [2023-11-25 00:00:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-25 00:00:15,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:15,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:15,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:15,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:15,505 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:15,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1576817058, now seen corresponding path program 1 times [2023-11-25 00:00:15,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:15,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567872370] [2023-11-25 00:00:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:15,506 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 [2023-11-25 00:00:15,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:15,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:15,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:15,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:00:15,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:15,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:15,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:15,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567872370] [2023-11-25 00:00:15,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567872370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:15,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:15,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:00:15,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931555881] [2023-11-25 00:00:15,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:15,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:15,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:15,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:15,773 INFO L87 Difference]: Start difference. First operand 858 states and 946 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:17,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:17,195 INFO L93 Difference]: Finished difference Result 844 states and 925 transitions. [2023-11-25 00:00:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:17,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-25 00:00:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:17,201 INFO L225 Difference]: With dead ends: 844 [2023-11-25 00:00:17,201 INFO L226 Difference]: Without dead ends: 844 [2023-11-25 00:00:17,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:17,202 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 58 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:17,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2184 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-25 00:00:17,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2023-11-25 00:00:17,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 843. [2023-11-25 00:00:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 433 states have (on average 2.115473441108545) internal successors, (916), 837 states have internal predecessors, (916), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 924 transitions. [2023-11-25 00:00:17,222 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 924 transitions. Word has length 17 [2023-11-25 00:00:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:17,223 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 924 transitions. [2023-11-25 00:00:17,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 924 transitions. [2023-11-25 00:00:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-25 00:00:17,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:17,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:17,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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)] Forceful destruction successful, exit code 0 [2023-11-25 00:00:17,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:17,432 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:17,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:17,432 INFO L85 PathProgramCache]: Analyzing trace with hash -206328208, now seen corresponding path program 1 times [2023-11-25 00:00:17,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:17,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895976699] [2023-11-25 00:00:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:17,433 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 [2023-11-25 00:00:17,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:17,434 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:17,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:17,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:00:17,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:17,637 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 [2023-11-25 00:00:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:17,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:17,750 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895976699] [2023-11-25 00:00:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895976699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:17,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:00:17,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191567781] [2023-11-25 00:00:17,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:17,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:17,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:17,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:17,754 INFO L87 Difference]: Start difference. First operand 843 states and 924 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:20,653 INFO L93 Difference]: Finished difference Result 1182 states and 1293 transitions. [2023-11-25 00:00:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:20,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-11-25 00:00:20,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:20,661 INFO L225 Difference]: With dead ends: 1182 [2023-11-25 00:00:20,661 INFO L226 Difference]: Without dead ends: 1182 [2023-11-25 00:00:20,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:20,662 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 814 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:20,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 956 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-25 00:00:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-11-25 00:00:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 839. [2023-11-25 00:00:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 433 states have (on average 2.1062355658198615) internal successors, (912), 833 states have internal predecessors, (912), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 920 transitions. [2023-11-25 00:00:20,683 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 920 transitions. Word has length 31 [2023-11-25 00:00:20,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:20,683 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 920 transitions. [2023-11-25 00:00:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 920 transitions. [2023-11-25 00:00:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-25 00:00:20,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:20,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:20,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:20,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:20,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:20,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -206328207, now seen corresponding path program 1 times [2023-11-25 00:00:20,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:20,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65406679] [2023-11-25 00:00:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:20,890 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 [2023-11-25 00:00:20,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:20,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:20,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:21,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:00:21,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:21,164 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 [2023-11-25 00:00:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:21,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:21,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:21,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65406679] [2023-11-25 00:00:21,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65406679] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:21,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:21,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:00:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565496760] [2023-11-25 00:00:21,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:21,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:21,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:21,381 INFO L87 Difference]: Start difference. First operand 839 states and 920 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:25,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:25,719 INFO L93 Difference]: Finished difference Result 1235 states and 1315 transitions. [2023-11-25 00:00:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:25,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-11-25 00:00:25,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:25,726 INFO L225 Difference]: With dead ends: 1235 [2023-11-25 00:00:25,726 INFO L226 Difference]: Without dead ends: 1235 [2023-11-25 00:00:25,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:25,727 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 548 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:25,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1253 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-25 00:00:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-11-25 00:00:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 835. [2023-11-25 00:00:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 433 states have (on average 2.096997690531178) internal successors, (908), 829 states have internal predecessors, (908), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 916 transitions. [2023-11-25 00:00:25,748 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 916 transitions. Word has length 31 [2023-11-25 00:00:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:25,748 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 916 transitions. [2023-11-25 00:00:25,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:25,749 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 916 transitions. [2023-11-25 00:00:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-25 00:00:25,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:25,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:25,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:25,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:25,954 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:25,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:25,955 INFO L85 PathProgramCache]: Analyzing trace with hash 207748330, now seen corresponding path program 1 times [2023-11-25 00:00:25,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:25,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665404839] [2023-11-25 00:00:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:25,956 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 [2023-11-25 00:00:25,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:25,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:25,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:26,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:00:26,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:26,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:26,300 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:26,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665404839] [2023-11-25 00:00:26,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665404839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:26,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:26,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:00:26,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116636745] [2023-11-25 00:00:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:26,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:26,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:26,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:26,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:26,302 INFO L87 Difference]: Start difference. First operand 835 states and 916 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:27,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:27,452 INFO L93 Difference]: Finished difference Result 829 states and 906 transitions. [2023-11-25 00:00:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:27,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-11-25 00:00:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:27,458 INFO L225 Difference]: With dead ends: 829 [2023-11-25 00:00:27,458 INFO L226 Difference]: Without dead ends: 829 [2023-11-25 00:00:27,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:27,459 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 23 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:27,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2170 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-25 00:00:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-11-25 00:00:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2023-11-25 00:00:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 427 states have (on average 2.1030444964871196) internal successors, (898), 823 states have internal predecessors, (898), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-25 00:00:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 906 transitions. [2023-11-25 00:00:27,476 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 906 transitions. Word has length 47 [2023-11-25 00:00:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:27,477 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 906 transitions. [2023-11-25 00:00:27,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:27,477 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 906 transitions. [2023-11-25 00:00:27,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-25 00:00:27,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:27,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:27,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:27,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-11-25 00:00:27,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2009397589, now seen corresponding path program 1 times [2023-11-25 00:00:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:00:27,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045129336] [2023-11-25 00:00:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:27,685 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 [2023-11-25 00:00:27,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:00:27,686 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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) [2023-11-25 00:00:27,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6b19cc6-851f-4050-bf4c-19ac769ffda7/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 [2023-11-25 00:00:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:27,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:00:27,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:00:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:28,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:00:28,336 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:00:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045129336] [2023-11-25 00:00:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045129336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372549588] [2023-11-25 00:00:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:00:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:00:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:00:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:00:28,339 INFO L87 Difference]: Start difference. First operand 829 states and 906 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)