./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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_5fbca331-a392-4223-a419-d0f0e58cafb2/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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:17:52,984 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:17:53,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-24 23:17:53,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:17:53,124 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:17:53,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:17:53,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:17:53,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:17:53,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:17:53,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:17:53,169 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:17:53,169 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:17:53,170 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:17:53,171 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:17:53,171 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:17:53,172 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:17:53,173 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:17:53,174 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:17:53,174 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:17:53,175 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:17:53,176 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:17:53,181 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:17:53,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:17:53,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:17:53,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:17:53,184 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:17:53,184 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:17:53,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:17:53,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:17:53,186 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:17:53,187 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:17:53,188 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:17:53,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:17:53,188 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:17:53,189 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:17:53,189 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:17:53,189 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:17:53,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:17:53,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:17:53,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:17:53,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:17:53,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:17:53,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:17:53,192 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:17:53,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:17:53,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:17:53,193 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:17:53,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:17:53,194 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_5fbca331-a392-4223-a419-d0f0e58cafb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2023-11-24 23:17:53,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:17:53,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:17:53,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:17:53,595 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:17:53,596 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:17:53,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-24 23:17:56,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:17:57,430 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:17:57,431 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-24 23:17:57,453 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data/4fcf60078/2b6804933ccc4b9598e439c69d72308f/FLAG9bf0d163c [2023-11-24 23:17:57,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data/4fcf60078/2b6804933ccc4b9598e439c69d72308f [2023-11-24 23:17:57,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:17:57,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:17:57,478 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:17:57,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:17:57,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:17:57,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:17:57" (1/1) ... [2023-11-24 23:17:57,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adaecbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:57, skipping insertion in model container [2023-11-24 23:17:57,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:17:57" (1/1) ... [2023-11-24 23:17:57,598 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:17:58,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:17:58,287 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 23:17:58,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a49aa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:17:58, skipping insertion in model container [2023-11-24 23:17:58,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:17:58,289 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:17:58,291 INFO L158 Benchmark]: Toolchain (without parser) took 814.03ms. Allocated memory is still 140.5MB. Free memory was 105.0MB in the beginning and 84.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:17:58,291 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:17:58,292 INFO L158 Benchmark]: CACSL2BoogieTranslator took 810.95ms. Allocated memory is still 140.5MB. Free memory was 105.0MB in the beginning and 84.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:17:58,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 140.5MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 810.95ms. Allocated memory is still 140.5MB. Free memory was 105.0MB in the beginning and 84.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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_5fbca331-a392-4223-a419-d0f0e58cafb2/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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:18:00,778 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:18:00,920 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-24 23:18:00,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:18:00,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:18:00,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:18:00,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:18:00,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:18:00,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:18:00,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:18:00,982 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:18:00,982 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:18:00,983 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:18:00,985 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:18:00,985 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:18:00,986 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:18:00,986 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:18:00,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:18:00,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:18:00,989 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:18:00,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:18:00,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:18:00,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:18:00,991 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:18:00,992 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:18:00,992 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:18:00,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:18:00,993 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:18:00,994 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:18:00,994 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:18:00,996 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:18:00,996 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:18:00,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:18:00,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:18:00,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:18:00,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:18:00,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:18:00,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:18:00,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:18:01,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:18:01,001 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:18:01,001 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:18:01,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:18:01,002 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:18:01,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:18:01,003 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_5fbca331-a392-4223-a419-d0f0e58cafb2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2023-11-24 23:18:01,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:18:01,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:18:01,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:18:01,458 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:18:01,458 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:18:01,461 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-24 23:18:04,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:18:04,922 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:18:04,923 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2023-11-24 23:18:04,951 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data/06c64a47d/246b197b5dbc49d19be1afa247e4c641/FLAG3f89f5024 [2023-11-24 23:18:04,966 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/data/06c64a47d/246b197b5dbc49d19be1afa247e4c641 [2023-11-24 23:18:04,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:18:04,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:18:04,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:18:04,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:18:04,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:18:04,979 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:18:04" (1/1) ... [2023-11-24 23:18:04,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c211d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:04, skipping insertion in model container [2023-11-24 23:18:04,980 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:18:04" (1/1) ... [2023-11-24 23:18:05,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:18:05,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:18:05,876 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:18:05,891 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:18:05,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:18:06,001 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:18:06,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:18:06,189 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:18:06,197 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:18:06,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06 WrapperNode [2023-11-24 23:18:06,198 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:18:06,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:18:06,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:18:06,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:18:06,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,312 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-24 23:18:06,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:18:06,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:18:06,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:18:06,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:18:06,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:18:06,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:18:06,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:18:06,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:18:06,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (1/1) ... [2023-11-24 23:18:06,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:18:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:18:06,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:18:06,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:18:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:18:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:18:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:18:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:18:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:18:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:18:06,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:18:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:18:06,561 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-24 23:18:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-24 23:18:06,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:18:06,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:18:06,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:18:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:18:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:18:06,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:18:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:18:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:18:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:18:06,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:18:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:18:06,850 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:18:06,853 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:18:06,903 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 23:18:12,749 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:18:13,035 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:18:13,038 INFO L309 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-24 23:18:13,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:18:13 BoogieIcfgContainer [2023-11-24 23:18:13,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:18:13,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:18:13,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:18:13,048 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:18:13,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:18:04" (1/3) ... [2023-11-24 23:18:13,049 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2911be4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:18:13, skipping insertion in model container [2023-11-24 23:18:13,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:18:06" (2/3) ... [2023-11-24 23:18:13,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2911be4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:18:13, skipping insertion in model container [2023-11-24 23:18:13,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:18:13" (3/3) ... [2023-11-24 23:18:13,054 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2023-11-24 23:18:13,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:18:13,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 640 error locations. [2023-11-24 23:18:13,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:18:13,165 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;@12b049e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:18:13,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 640 error locations. [2023-11-24 23:18:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 1187 states, 523 states have (on average 2.5181644359464626) internal successors, (1317), 1177 states have internal predecessors, (1317), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 23:18:13,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:18:13,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:13,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:18:13,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:13,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 69990, now seen corresponding path program 1 times [2023-11-24 23:18:13,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385848573] [2023-11-24 23:18:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:13,210 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 23:18:13,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:13,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:13,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:13,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:18:13,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:13,489 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 23:18:13,504 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 23:18:13,504 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:13,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385848573] [2023-11-24 23:18:13,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385848573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:13,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:13,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:18:13,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618333308] [2023-11-24 23:18:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:13,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:13,549 INFO L87 Difference]: Start difference. First operand has 1187 states, 523 states have (on average 2.5181644359464626) internal successors, (1317), 1177 states have internal predecessors, (1317), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) 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 23:18:16,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:16,595 INFO L93 Difference]: Finished difference Result 1356 states and 1462 transitions. [2023-11-24 23:18:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:16,598 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 23:18:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:16,630 INFO L225 Difference]: With dead ends: 1356 [2023-11-24 23:18:16,630 INFO L226 Difference]: Without dead ends: 1355 [2023-11-24 23:18:16,632 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 23:18:16,641 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1062 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:16,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 904 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-24 23:18:16,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2023-11-24 23:18:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1178. [2023-11-24 23:18:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 529 states have (on average 2.33648393194707) internal successors, (1236), 1167 states have internal predecessors, (1236), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-24 23:18:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1280 transitions. [2023-11-24 23:18:16,772 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1280 transitions. Word has length 2 [2023-11-24 23:18:16,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:16,773 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1280 transitions. [2023-11-24 23:18:16,773 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 23:18:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1280 transitions. [2023-11-24 23:18:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 23:18:16,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:16,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 23:18:16,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:16,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:16,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:16,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash 69991, now seen corresponding path program 1 times [2023-11-24 23:18:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:16,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221302977] [2023-11-24 23:18:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:16,980 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 23:18:16,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:16,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:16,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:17,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:18:17,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:17,127 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 23:18:17,140 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 23:18:17,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:17,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221302977] [2023-11-24 23:18:17,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221302977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:17,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:17,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 23:18:17,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863774807] [2023-11-24 23:18:17,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:17,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:17,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:17,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:17,145 INFO L87 Difference]: Start difference. First operand 1178 states and 1280 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 23:18:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:22,180 INFO L93 Difference]: Finished difference Result 1722 states and 1866 transitions. [2023-11-24 23:18:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:22,183 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 23:18:22,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:22,194 INFO L225 Difference]: With dead ends: 1722 [2023-11-24 23:18:22,194 INFO L226 Difference]: Without dead ends: 1722 [2023-11-24 23:18:22,195 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 23:18:22,196 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 583 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:22,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1550 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-24 23:18:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-11-24 23:18:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1351. [2023-11-24 23:18:22,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 702 states have (on average 2.3133903133903133) internal successors, (1624), 1339 states have internal predecessors, (1624), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 23:18:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1670 transitions. [2023-11-24 23:18:22,248 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1670 transitions. Word has length 2 [2023-11-24 23:18:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:22,249 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 1670 transitions. [2023-11-24 23:18:22,249 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 23:18:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1670 transitions. [2023-11-24 23:18:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:18:22,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:22,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 23:18:22,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:22,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:22,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:22,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 215533808, now seen corresponding path program 1 times [2023-11-24 23:18:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:22,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1001831626] [2023-11-24 23:18:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:22,454 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 23:18:22,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:22,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:22,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:22,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 23:18:22,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:22,661 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 23:18:22,672 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 23:18:22,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 23:18:22,778 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 23:18:22,800 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 23:18:22,801 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 23:18:22,845 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 23:18:22,845 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:22,845 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:22,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1001831626] [2023-11-24 23:18:22,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1001831626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:22,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:22,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:18:22,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572482946] [2023-11-24 23:18:22,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:22,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:18:22,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:22,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:18:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:18:22,849 INFO L87 Difference]: Start difference. First operand 1351 states and 1670 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) [2023-11-24 23:18:27,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:27,519 INFO L93 Difference]: Finished difference Result 1522 states and 1848 transitions. [2023-11-24 23:18:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:18:27,520 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 [2023-11-24 23:18:27,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:27,529 INFO L225 Difference]: With dead ends: 1522 [2023-11-24 23:18:27,529 INFO L226 Difference]: Without dead ends: 1522 [2023-11-24 23:18:27,530 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 [2023-11-24 23:18:27,531 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1349 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:27,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 581 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-24 23:18:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2023-11-24 23:18:27,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1167. [2023-11-24 23:18:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 529 states have (on average 2.3137996219281662) internal successors, (1224), 1156 states have internal predecessors, (1224), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-24 23:18:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1268 transitions. [2023-11-24 23:18:27,568 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1268 transitions. Word has length 6 [2023-11-24 23:18:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:27,568 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1268 transitions. [2023-11-24 23:18:27,569 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) [2023-11-24 23:18:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1268 transitions. [2023-11-24 23:18:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:18:27,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:27,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:27,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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)] Forceful destruction successful, exit code 0 [2023-11-24 23:18:27,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:27,772 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:27,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1908386467, now seen corresponding path program 1 times [2023-11-24 23:18:27,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:27,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946992928] [2023-11-24 23:18:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:27,774 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 23:18:27,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:27,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:27,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-24 23:18:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:27,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:18:27,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:27,934 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 23:18:27,948 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 23:18:27,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:27,949 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:27,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946992928] [2023-11-24 23:18:27,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946992928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:27,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:27,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:18:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624156783] [2023-11-24 23:18:27,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:27,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:27,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:27,952 INFO L87 Difference]: Start difference. First operand 1167 states and 1268 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) [2023-11-24 23:18:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:31,027 INFO L93 Difference]: Finished difference Result 1463 states and 1592 transitions. [2023-11-24 23:18:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:31,028 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 [2023-11-24 23:18:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:31,036 INFO L225 Difference]: With dead ends: 1463 [2023-11-24 23:18:31,036 INFO L226 Difference]: Without dead ends: 1463 [2023-11-24 23:18:31,037 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 [2023-11-24 23:18:31,038 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 895 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:31,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 1370 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-24 23:18:31,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-11-24 23:18:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1120. [2023-11-24 23:18:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 529 states have (on average 2.223062381852552) internal successors, (1176), 1109 states have internal predecessors, (1176), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-24 23:18:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1220 transitions. [2023-11-24 23:18:31,072 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1220 transitions. Word has length 7 [2023-11-24 23:18:31,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:31,073 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1220 transitions. [2023-11-24 23:18:31,073 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) [2023-11-24 23:18:31,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1220 transitions. [2023-11-24 23:18:31,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:18:31,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:31,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:31,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 [2023-11-24 23:18:31,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:31,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:31,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1908386466, now seen corresponding path program 1 times [2023-11-24 23:18:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:31,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497731172] [2023-11-24 23:18:31,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:31,280 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 23:18:31,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:31,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:31,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-24 23:18:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:31,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:18:31,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:31,433 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 23:18:31,467 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 23:18:31,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:31,468 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497731172] [2023-11-24 23:18:31,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497731172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:31,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:31,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:18:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863965541] [2023-11-24 23:18:31,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:31,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:31,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:31,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:31,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:31,478 INFO L87 Difference]: Start difference. First operand 1120 states and 1220 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) [2023-11-24 23:18:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:35,938 INFO L93 Difference]: Finished difference Result 1546 states and 1681 transitions. [2023-11-24 23:18:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:35,940 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 [2023-11-24 23:18:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:35,947 INFO L225 Difference]: With dead ends: 1546 [2023-11-24 23:18:35,947 INFO L226 Difference]: Without dead ends: 1546 [2023-11-24 23:18:35,948 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 [2023-11-24 23:18:35,949 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 624 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:35,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1690 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-24 23:18:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2023-11-24 23:18:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1322. [2023-11-24 23:18:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 739 states have (on average 2.205683355886333) internal successors, (1630), 1309 states have internal predecessors, (1630), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-24 23:18:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1678 transitions. [2023-11-24 23:18:35,991 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1678 transitions. Word has length 7 [2023-11-24 23:18:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:35,991 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 1678 transitions. [2023-11-24 23:18:35,991 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) [2023-11-24 23:18:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1678 transitions. [2023-11-24 23:18:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:18:35,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:35,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:36,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-24 23:18:36,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:36,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr533REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:36,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash -730421823, now seen corresponding path program 1 times [2023-11-24 23:18:36,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:36,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691003669] [2023-11-24 23:18:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:36,197 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 23:18:36,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:36,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:36,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-24 23:18:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:36,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:18:36,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:36,480 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 23:18:36,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:36,481 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691003669] [2023-11-24 23:18:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691003669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:36,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:36,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:18:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454344915] [2023-11-24 23:18:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:36,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:36,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:36,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:36,484 INFO L87 Difference]: Start difference. First operand 1322 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:18:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:38,373 INFO L93 Difference]: Finished difference Result 2056 states and 2631 transitions. [2023-11-24 23:18:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 23:18:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:38,384 INFO L225 Difference]: With dead ends: 2056 [2023-11-24 23:18:38,385 INFO L226 Difference]: Without dead ends: 2056 [2023-11-24 23:18:38,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 23:18:38,386 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 683 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:38,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 2082 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 23:18:38,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-11-24 23:18:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1657. [2023-11-24 23:18:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1072 states have (on average 2.183768656716418) internal successors, (2341), 1642 states have internal predecessors, (2341), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:18:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2393 transitions. [2023-11-24 23:18:38,437 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2393 transitions. Word has length 10 [2023-11-24 23:18:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:38,438 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2393 transitions. [2023-11-24 23:18:38,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:18:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2393 transitions. [2023-11-24 23:18:38,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:18:38,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:38,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:38,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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)] Forceful destruction successful, exit code 0 [2023-11-24 23:18:38,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:38,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr344REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:38,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:38,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1846729337, now seen corresponding path program 1 times [2023-11-24 23:18:38,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:38,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142553850] [2023-11-24 23:18:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:38,650 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 23:18:38,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:38,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:38,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-24 23:18:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:38,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:18:38,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:38,821 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 23:18:38,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:38,822 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142553850] [2023-11-24 23:18:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142553850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:38,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:38,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:18:38,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204361182] [2023-11-24 23:18:38,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:38,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:38,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:38,824 INFO L87 Difference]: Start difference. First operand 1657 states and 2393 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:18:40,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:40,050 INFO L93 Difference]: Finished difference Result 1573 states and 2233 transitions. [2023-11-24 23:18:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:40,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:18:40,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:40,063 INFO L225 Difference]: With dead ends: 1573 [2023-11-24 23:18:40,063 INFO L226 Difference]: Without dead ends: 1573 [2023-11-24 23:18:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:40,066 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 70 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:40,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1999 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 23:18:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-11-24 23:18:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1573. [2023-11-24 23:18:40,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1012 states have (on average 2.1551383399209487) internal successors, (2181), 1558 states have internal predecessors, (2181), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:18:40,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2233 transitions. [2023-11-24 23:18:40,116 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2233 transitions. Word has length 12 [2023-11-24 23:18:40,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:40,117 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2233 transitions. [2023-11-24 23:18:40,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:18:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2233 transitions. [2023-11-24 23:18:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:18:40,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:40,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:40,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 [2023-11-24 23:18:40,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:40,323 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr638ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:40,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:40,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1684727900, now seen corresponding path program 1 times [2023-11-24 23:18:40,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:40,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403251527] [2023-11-24 23:18:40,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:40,324 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 [2023-11-24 23:18:40,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:40,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:40,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-24 23:18:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:40,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:18:40,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:40,529 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:18:40,530 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:18:40,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:18:40,536 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 [2023-11-24 23:18:40,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:18:40,616 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 [2023-11-24 23:18:40,634 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 23:18:40,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:40,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403251527] [2023-11-24 23:18:40,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403251527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:40,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:40,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:18:40,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493804867] [2023-11-24 23:18:40,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:40,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:18:40,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:18:40,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:18:40,637 INFO L87 Difference]: Start difference. First operand 1573 states and 2233 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:18:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:43,354 INFO L93 Difference]: Finished difference Result 2166 states and 3088 transitions. [2023-11-24 23:18:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:18:43,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-24 23:18:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:43,366 INFO L225 Difference]: With dead ends: 2166 [2023-11-24 23:18:43,366 INFO L226 Difference]: Without dead ends: 2166 [2023-11-24 23:18:43,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:18:43,367 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 434 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:43,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 3020 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-24 23:18:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2023-11-24 23:18:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1572. [2023-11-24 23:18:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1011 states have (on average 2.1552917903066273) internal successors, (2179), 1557 states have internal predecessors, (2179), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:18:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2231 transitions. [2023-11-24 23:18:43,420 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2231 transitions. Word has length 13 [2023-11-24 23:18:43,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:43,420 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2231 transitions. [2023-11-24 23:18:43,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:18:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2231 transitions. [2023-11-24 23:18:43,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:18:43,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:43,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:43,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 [2023-11-24 23:18:43,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:43,625 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:43,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash -212897772, now seen corresponding path program 1 times [2023-11-24 23:18:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716882061] [2023-11-24 23:18:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:43,626 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 23:18:43,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:43,628 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:43,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-24 23:18:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:43,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:18:43,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:43,865 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 23:18:43,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:43,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:43,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716882061] [2023-11-24 23:18:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716882061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:18:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7965400] [2023-11-24 23:18:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:18:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:18:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:18:43,870 INFO L87 Difference]: Start difference. First operand 1572 states and 2231 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) [2023-11-24 23:18:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:44,989 INFO L93 Difference]: Finished difference Result 1518 states and 2151 transitions. [2023-11-24 23:18:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:18:44,998 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 [2023-11-24 23:18:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:45,006 INFO L225 Difference]: With dead ends: 1518 [2023-11-24 23:18:45,006 INFO L226 Difference]: Without dead ends: 1518 [2023-11-24 23:18:45,007 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 [2023-11-24 23:18:45,008 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 70 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:45,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1925 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:18:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-11-24 23:18:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1518. [2023-11-24 23:18:45,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 981 states have (on average 2.1396534148827726) internal successors, (2099), 1503 states have internal predecessors, (2099), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:18:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2151 transitions. [2023-11-24 23:18:45,048 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2151 transitions. Word has length 15 [2023-11-24 23:18:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:45,049 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2151 transitions. [2023-11-24 23:18:45,049 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) [2023-11-24 23:18:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2151 transitions. [2023-11-24 23:18:45,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 23:18:45,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:45,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:18:45,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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)] Ended with exit code 0 [2023-11-24 23:18:45,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:45,254 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:45,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1563670990, now seen corresponding path program 1 times [2023-11-24 23:18:45,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:45,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194184191] [2023-11-24 23:18:45,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:45,256 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 23:18:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:45,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:45,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 23:18:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:45,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:18:45,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:45,533 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 23:18:45,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:45,534 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194184191] [2023-11-24 23:18:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194184191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:45,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:45,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:18:45,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708312478] [2023-11-24 23:18:45,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:45,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:18:45,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:45,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:18:45,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:18:45,537 INFO L87 Difference]: Start difference. First operand 1518 states and 2151 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) [2023-11-24 23:18:46,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:18:46,987 INFO L93 Difference]: Finished difference Result 1504 states and 2109 transitions. [2023-11-24 23:18:46,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:18:46,989 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 [2023-11-24 23:18:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:18:46,995 INFO L225 Difference]: With dead ends: 1504 [2023-11-24 23:18:46,995 INFO L226 Difference]: Without dead ends: 1504 [2023-11-24 23:18:46,995 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 [2023-11-24 23:18:46,996 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 58 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:18:46,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2844 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 23:18:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2023-11-24 23:18:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1502. [2023-11-24 23:18:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 979 states have (on average 2.0990806945863127) internal successors, (2055), 1487 states have internal predecessors, (2055), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 23:18:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2107 transitions. [2023-11-24 23:18:47,035 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2107 transitions. Word has length 17 [2023-11-24 23:18:47,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:18:47,036 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 2107 transitions. [2023-11-24 23:18:47,036 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) [2023-11-24 23:18:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2107 transitions. [2023-11-24 23:18:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-24 23:18:47,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:18:47,037 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] [2023-11-24 23:18:47,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-24 23:18:47,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:47,241 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 637 more)] === [2023-11-24 23:18:47,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:18:47,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2036136924, now seen corresponding path program 1 times [2023-11-24 23:18:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:18:47,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732582285] [2023-11-24 23:18:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:18:47,242 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 23:18:47,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:18:47,244 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/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 23:18:47,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fbca331-a392-4223-a419-d0f0e58cafb2/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-24 23:18:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:18:47,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:18:47,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:18:47,454 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 23:18:47,554 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 23:18:47,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:18:47,555 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:18:47,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732582285] [2023-11-24 23:18:47,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732582285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:18:47,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:18:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:18:47,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283507737] [2023-11-24 23:18:47,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:18:47,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:18:47,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:18:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:18:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:18:47,558 INFO L87 Difference]: Start difference. First operand 1502 states and 2107 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)