./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E --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 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:06:10,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:06:10,475 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 03:06:10,486 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:06:10,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:06:10,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:06:10,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:06:10,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:06:10,537 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:06:10,537 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:06:10,537 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:06:10,537 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:06:10,537 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:06:10,538 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:06:10,538 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:06:10,538 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:06:10,538 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:06:10,538 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:06:10,538 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:06:10,539 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:06:10,539 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:06:10,539 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:06:10,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:06:10,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:06:10,542 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:06:10,542 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:06:10,542 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:06:10,543 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:06:10,544 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:06:10,544 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:06:10,544 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:06:10,544 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:06:10,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:06:10,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:06:10,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:06:10,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:06:10,545 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:06:10,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:06:10,545 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:06:10,545 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:06:10,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:06:10,546 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E 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 -> 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 [2024-11-14 03:06:10,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:06:10,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:06:10,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:06:10,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:06:10,935 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:06:10,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i Unable to find full path for "g++" [2024-11-14 03:06:13,423 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:06:13,859 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:06:13,860 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2024-11-14 03:06:13,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data/d89d8e9db/5b30a07334c34b9a9e660b3ad0f17cff/FLAG8947a70a7 [2024-11-14 03:06:13,899 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data/d89d8e9db/5b30a07334c34b9a9e660b3ad0f17cff [2024-11-14 03:06:13,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:06:13,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:06:13,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:06:13,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:06:13,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:06:13,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:06:13" (1/1) ... [2024-11-14 03:06:13,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f1b097b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:13, skipping insertion in model container [2024-11-14 03:06:13,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:06:13" (1/1) ... [2024-11-14 03:06:13,980 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:06:14,380 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:14,484 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:14,490 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:14,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:06:14,516 ERROR L321 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) [2024-11-14 03:06:14,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3766d91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:14, skipping insertion in model container [2024-11-14 03:06:14,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:06:14,517 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 03:06:14,519 INFO L158 Benchmark]: Toolchain (without parser) took 614.63ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 101.3MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,520 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:06:14,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.16ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 101.3MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:06:14,522 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.16ms. Allocated memory is still 142.6MB. Free memory was 115.2MB in the beginning and 101.3MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E --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 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:06:17,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:06:17,271 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 03:06:17,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:06:17,283 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:06:17,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:06:17,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:06:17,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:06:17,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:06:17,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:06:17,312 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:06:17,313 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:06:17,313 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:06:17,313 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:06:17,313 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:06:17,313 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:06:17,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:06:17,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:06:17,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:06:17,314 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 03:06:17,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:06:17,315 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 03:06:17,315 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:06:17,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:06:17,315 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:06:17,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:06:17,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 03:06:17,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:06:17,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:06:17,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:06:17,316 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:06:17,316 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:06:17,317 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 03:06:17,317 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 03:06:17,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:06:17,317 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:06:17,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E 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 -> 38a2fba2a92db51b6a97ddc82d5dc9e2df7a8770315ef841bfaf5f0764404946 [2024-11-14 03:06:17,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:06:17,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:06:17,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:06:17,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:06:17,698 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:06:17,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i Unable to find full path for "g++" [2024-11-14 03:06:19,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:06:19,994 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:06:19,995 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/sv-benchmarks/c/ldv-memsafety/memleaks_test17_3.i [2024-11-14 03:06:20,016 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data/648c2478b/efff2b980c404aaa95f0698493b431fa/FLAGff31c8ed0 [2024-11-14 03:06:20,032 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/data/648c2478b/efff2b980c404aaa95f0698493b431fa [2024-11-14 03:06:20,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:06:20,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:06:20,037 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:06:20,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:06:20,042 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:06:20,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756ed579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20, skipping insertion in model container [2024-11-14 03:06:20,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,093 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:06:20,421 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:20,484 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:20,489 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:20,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:06:20,521 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 03:06:20,539 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:06:20,606 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:20,660 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:20,663 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:06:20,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:06:20,684 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:06:20,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:06:20,847 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:06:20,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20 WrapperNode [2024-11-14 03:06:20,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:06:20,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:06:20,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:06:20,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:06:20,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,929 INFO L138 Inliner]: procedures = 166, calls = 76, calls flagged for inlining = 22, calls inlined = 4, statements flattened = 66 [2024-11-14 03:06:20,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:06:20,932 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:06:20,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:06:20,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:06:20,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:20,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:06:20,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:06:20,991 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:06:20,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:06:20,992 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (1/1) ... [2024-11-14 03:06:21,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:06:21,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:06:21,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:06:21,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:06:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 03:06:21,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 03:06:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:06:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:06:21,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:06:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:06:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:06:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:06:21,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:06:21,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:06:21,212 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:06:21,214 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:06:21,530 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-14 03:06:21,530 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:06:21,542 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:06:21,542 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-14 03:06:21,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:06:21 BoogieIcfgContainer [2024-11-14 03:06:21,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:06:21,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:06:21,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:06:21,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:06:21,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:06:20" (1/3) ... [2024-11-14 03:06:21,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52274a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:06:21, skipping insertion in model container [2024-11-14 03:06:21,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:06:20" (2/3) ... [2024-11-14 03:06:21,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52274a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:06:21, skipping insertion in model container [2024-11-14 03:06:21,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:06:21" (3/3) ... [2024-11-14 03:06:21,556 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_3.i [2024-11-14 03:06:21,575 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:06:21,576 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test17_3.i that has 2 procedures, 52 locations, 1 initial locations, 3 loop locations, and 15 error locations. [2024-11-14 03:06:21,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:06:21,636 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@55302425, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:06:21,636 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-14 03:06:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 48 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:06:21,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:06:21,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:21,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:21,649 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:21,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1838856493, now seen corresponding path program 1 times [2024-11-14 03:06:21,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:21,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518356025] [2024-11-14 03:06:21,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:21,690 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 [2024-11-14 03:06:21,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:21,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:21,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:21,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:06:21,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:21,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:06:21,923 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518356025] [2024-11-14 03:06:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518356025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:21,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:06:21,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491621016] [2024-11-14 03:06:21,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:21,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:06:21,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:21,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:06:21,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:06:21,960 INFO L87 Difference]: Start difference. First operand has 52 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 48 states have internal predecessors, (57), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:22,093 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2024-11-14 03:06:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:06:22,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:06:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:22,105 INFO L225 Difference]: With dead ends: 90 [2024-11-14 03:06:22,106 INFO L226 Difference]: Without dead ends: 88 [2024-11-14 03:06:22,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:06:22,110 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 37 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:22,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 185 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:06:22,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-14 03:06:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 54. [2024-11-14 03:06:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 49 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:06:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2024-11-14 03:06:22,163 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 11 [2024-11-14 03:06:22,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:22,165 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2024-11-14 03:06:22,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:22,165 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2024-11-14 03:06:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:06:22,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:22,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:22,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-14 03:06:22,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:06:22,368 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:22,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1838781217, now seen corresponding path program 1 times [2024-11-14 03:06:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:22,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392038291] [2024-11-14 03:06:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:22,369 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 [2024-11-14 03:06:22,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:22,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:22,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:22,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:06:22,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:22,470 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 [2024-11-14 03:06:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:22,538 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:06:22,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:22,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392038291] [2024-11-14 03:06:22,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392038291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:22,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:22,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:06:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990915419] [2024-11-14 03:06:22,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:22,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:06:22,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:22,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:06:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:06:22,541 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:22,728 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2024-11-14 03:06:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:06:22,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:06:22,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:22,730 INFO L225 Difference]: With dead ends: 65 [2024-11-14 03:06:22,730 INFO L226 Difference]: Without dead ends: 65 [2024-11-14 03:06:22,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:06:22,731 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:22,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 137 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:06:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-14 03:06:22,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-11-14 03:06:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 58 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:06:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2024-11-14 03:06:22,740 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 11 [2024-11-14 03:06:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:22,740 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2024-11-14 03:06:22,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:22,741 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2024-11-14 03:06:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:06:22,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:22,741 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:22,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:22,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:06:22,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:22,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1838781218, now seen corresponding path program 1 times [2024-11-14 03:06:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896635482] [2024-11-14 03:06:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:22,945 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 [2024-11-14 03:06:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:22,948 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:22,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:23,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:06:23,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:23,058 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 [2024-11-14 03:06:23,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:23,284 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:06:23,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896635482] [2024-11-14 03:06:23,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896635482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:23,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:23,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:06:23,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922487704] [2024-11-14 03:06:23,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:23,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:06:23,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:06:23,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:06:23,290 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:23,733 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2024-11-14 03:06:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:06:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:06:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:23,737 INFO L225 Difference]: With dead ends: 76 [2024-11-14 03:06:23,737 INFO L226 Difference]: Without dead ends: 76 [2024-11-14 03:06:23,737 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:06:23,738 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 28 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:23,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 258 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:06:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-14 03:06:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2024-11-14 03:06:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.5185185185185186) internal successors, (82), 68 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:06:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-14 03:06:23,751 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 11 [2024-11-14 03:06:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:23,751 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-14 03:06:23,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-14 03:06:23,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:06:23,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:23,752 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:23,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-14 03:06:23,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:06:23,953 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:23,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1568607122, now seen corresponding path program 1 times [2024-11-14 03:06:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:23,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449117583] [2024-11-14 03:06:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:23,954 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 [2024-11-14 03:06:23,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:23,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:23,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:24,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:06:24,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:24,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:24,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:06:24,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449117583] [2024-11-14 03:06:24,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449117583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:24,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:24,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:06:24,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506731473] [2024-11-14 03:06:24,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:24,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:06:24,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:24,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:06:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:06:24,089 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:24,255 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2024-11-14 03:06:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:06:24,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:06:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:24,258 INFO L225 Difference]: With dead ends: 106 [2024-11-14 03:06:24,258 INFO L226 Difference]: Without dead ends: 104 [2024-11-14 03:06:24,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:06:24,259 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 36 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:24,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 165 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:06:24,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-14 03:06:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2024-11-14 03:06:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.5) internal successors, (81), 68 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-14 03:06:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2024-11-14 03:06:24,269 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 11 [2024-11-14 03:06:24,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:24,269 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2024-11-14 03:06:24,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2024-11-14 03:06:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 03:06:24,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:24,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:24,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 03:06:24,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:06:24,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:24,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1568682398, now seen corresponding path program 1 times [2024-11-14 03:06:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:24,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918378803] [2024-11-14 03:06:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:24,472 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 [2024-11-14 03:06:24,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:24,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:24,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:24,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:06:24,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:24,635 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:06:24,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918378803] [2024-11-14 03:06:24,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918378803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:24,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:06:24,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:06:24,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635447215] [2024-11-14 03:06:24,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:24,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:06:24,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:24,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:06:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:06:24,637 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:24,709 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-11-14 03:06:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:06:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-14 03:06:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:24,710 INFO L225 Difference]: With dead ends: 61 [2024-11-14 03:06:24,714 INFO L226 Difference]: Without dead ends: 59 [2024-11-14 03:06:24,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:06:24,716 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:24,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:06:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-14 03:06:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-14 03:06:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 55 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:06:24,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2024-11-14 03:06:24,726 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 11 [2024-11-14 03:06:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:24,726 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2024-11-14 03:06:24,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2024-11-14 03:06:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 03:06:24,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:24,727 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:24,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Ended with exit code 0 [2024-11-14 03:06:24,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:06:24,928 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:24,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:24,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1118337372, now seen corresponding path program 1 times [2024-11-14 03:06:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:24,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377796296] [2024-11-14 03:06:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:24,929 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 [2024-11-14 03:06:24,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:24,931 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:24,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:25,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:06:25,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:25,045 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 [2024-11-14 03:06:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:25,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:26,232 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377796296] [2024-11-14 03:06:26,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377796296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:26,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [961484602] [2024-11-14 03:06:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:26,233 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:06:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:06:26,238 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:06:26,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-14 03:06:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:26,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:06:26,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:26,418 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 [2024-11-14 03:06:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:26,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:26,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [961484602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:26,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591119458] [2024-11-14 03:06:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:26,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:06:26,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:06:26,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 03:06:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:27,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:06:27,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:27,072 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 [2024-11-14 03:06:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:27,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:27,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591119458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:27,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:06:27,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 03:06:27,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735567365] [2024-11-14 03:06:27,634 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:06:27,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 03:06:27,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 03:06:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:06:27,638 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:06:29,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:29,230 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-14 03:06:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 03:06:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-11-14 03:06:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:29,233 INFO L225 Difference]: With dead ends: 71 [2024-11-14 03:06:29,233 INFO L226 Difference]: Without dead ends: 71 [2024-11-14 03:06:29,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:06:29,234 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 67 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:29,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 370 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:06:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-14 03:06:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2024-11-14 03:06:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.44) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:06:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2024-11-14 03:06:29,248 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 14 [2024-11-14 03:06:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:29,252 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2024-11-14 03:06:29,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:06:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2024-11-14 03:06:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 03:06:29,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:29,254 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:29,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-14 03:06:29,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-14 03:06:29,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 03:06:29,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:29,863 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:29,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:29,863 INFO L85 PathProgramCache]: Analyzing trace with hash -658184872, now seen corresponding path program 1 times [2024-11-14 03:06:29,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:29,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91478795] [2024-11-14 03:06:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:29,864 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 [2024-11-14 03:06:29,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:29,866 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:29,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:29,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:06:29,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:30,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:30,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:30,207 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91478795] [2024-11-14 03:06:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91478795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [895135982] [2024-11-14 03:06:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:30,208 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:06:30,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:06:30,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:06:30,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-14 03:06:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:30,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:06:30,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 03:06:30,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:06:30,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [895135982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:30,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:06:30,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 13 [2024-11-14 03:06:30,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834115312] [2024-11-14 03:06:30,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:30,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:06:30,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:30,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:06:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:06:30,512 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:30,671 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2024-11-14 03:06:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:06:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-14 03:06:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:30,675 INFO L225 Difference]: With dead ends: 67 [2024-11-14 03:06:30,675 INFO L226 Difference]: Without dead ends: 67 [2024-11-14 03:06:30,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:06:30,676 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 27 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:30,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 120 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:06:30,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-14 03:06:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-14 03:06:30,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.4) internal successors, (70), 63 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:06:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2024-11-14 03:06:30,691 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 22 [2024-11-14 03:06:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:30,691 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2024-11-14 03:06:30,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2024-11-14 03:06:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 03:06:30,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:30,693 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:30,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-14 03:06:30,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:31,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:06:31,094 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:31,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1972535646, now seen corresponding path program 2 times [2024-11-14 03:06:31,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:31,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044592558] [2024-11-14 03:06:31,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:06:31,095 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 [2024-11-14 03:06:31,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:31,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:31,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 03:06:31,211 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:06:31,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:06:31,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 03:06:31,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:31,243 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 [2024-11-14 03:06:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:31,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:33,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:33,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044592558] [2024-11-14 03:06:33,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044592558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:33,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1808339117] [2024-11-14 03:06:33,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:06:33,722 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:06:33,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:06:33,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:06:33,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 03:06:33,944 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:06:33,944 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:06:33,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:06:33,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:33,968 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 [2024-11-14 03:06:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:34,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:40,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1808339117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:40,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599872043] [2024-11-14 03:06:40,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:06:40,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:40,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:06:40,534 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:06:40,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-14 03:06:40,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:06:40,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:06:40,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:06:40,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:40,689 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 [2024-11-14 03:06:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:40,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:43,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599872043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:43,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:06:43,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11, 11, 11, 12] total 47 [2024-11-14 03:06:43,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222368423] [2024-11-14 03:06:43,730 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:06:43,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-14 03:06:43,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:43,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-14 03:06:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1903, Unknown=2, NotChecked=0, Total=2256 [2024-11-14 03:06:43,733 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 48 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:06:47,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:47,574 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2024-11-14 03:06:47,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 03:06:47,576 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 23 [2024-11-14 03:06:47,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:47,576 INFO L225 Difference]: With dead ends: 88 [2024-11-14 03:06:47,576 INFO L226 Difference]: Without dead ends: 88 [2024-11-14 03:06:47,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=496, Invalid=2472, Unknown=2, NotChecked=0, Total=2970 [2024-11-14 03:06:47,579 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 150 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:47,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 909 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 03:06:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-14 03:06:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2024-11-14 03:06:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 68 states have (on average 1.338235294117647) internal successors, (91), 81 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:06:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2024-11-14 03:06:47,586 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 23 [2024-11-14 03:06:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:47,586 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2024-11-14 03:06:47,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-14 03:06:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2024-11-14 03:06:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-14 03:06:47,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:47,587 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:47,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-14 03:06:47,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-14 03:06:47,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 03:06:48,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:06:48,191 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:48,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash -689449734, now seen corresponding path program 1 times [2024-11-14 03:06:48,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:48,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211936134] [2024-11-14 03:06:48,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:48,192 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 [2024-11-14 03:06:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:48,194 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:48,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 03:06:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:48,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:06:48,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:48,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:48,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:48,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211936134] [2024-11-14 03:06:48,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211936134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:48,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [283834836] [2024-11-14 03:06:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:48,692 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:06:48,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:06:48,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:06:48,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-14 03:06:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:48,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:06:48,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:48,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [283834836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069917395] [2024-11-14 03:06:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:49,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:49,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:06:49,043 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:06:49,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-14 03:06:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:49,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:06:49,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 03:06:49,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:06:49,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069917395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:06:49,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 03:06:49,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 9, 9, 9] total 17 [2024-11-14 03:06:49,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634552150] [2024-11-14 03:06:49,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:06:49,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:06:49,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:49,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:06:49,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:06:49,206 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:49,251 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2024-11-14 03:06:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:06:49,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-14 03:06:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:49,252 INFO L225 Difference]: With dead ends: 87 [2024-11-14 03:06:49,252 INFO L226 Difference]: Without dead ends: 87 [2024-11-14 03:06:49,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:06:49,253 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:49,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 125 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:06:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-14 03:06:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2024-11-14 03:06:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.3492063492063493) internal successors, (85), 76 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:06:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2024-11-14 03:06:49,261 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 34 [2024-11-14 03:06:49,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:49,261 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2024-11-14 03:06:49,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:06:49,261 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2024-11-14 03:06:49,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 03:06:49,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:49,262 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:49,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2024-11-14 03:06:49,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-14 03:06:49,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-14 03:06:49,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:49,863 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:49,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:49,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1890411960, now seen corresponding path program 1 times [2024-11-14 03:06:49,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:49,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59844482] [2024-11-14 03:06:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:49,866 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 [2024-11-14 03:06:49,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:49,868 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:49,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 03:06:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:50,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:06:50,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:50,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:06:50,465 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:06:50,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59844482] [2024-11-14 03:06:50,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59844482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:50,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1652419296] [2024-11-14 03:06:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:50,466 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:06:50,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:06:50,468 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:06:50,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-14 03:06:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:50,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:06:50,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:50,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:06:50,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1652419296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:50,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778521711] [2024-11-14 03:06:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:06:50,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:06:50,854 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:06:50,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-14 03:06:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:06:51,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:06:51,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:51,027 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 [2024-11-14 03:06:51,212 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:06:51,247 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 03:06:51,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 03:06:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 2 not checked. [2024-11-14 03:06:51,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:06:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-14 03:06:51,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778521711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:06:51,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:06:51,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 7, 6] total 23 [2024-11-14 03:06:51,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430971165] [2024-11-14 03:06:51,694 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:06:51,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 03:06:51,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:06:51,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 03:06:51,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=373, Unknown=1, NotChecked=40, Total=506 [2024-11-14 03:06:51,696 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-14 03:06:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:06:53,085 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2024-11-14 03:06:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 03:06:53,086 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 35 [2024-11-14 03:06:53,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:06:53,087 INFO L225 Difference]: With dead ends: 93 [2024-11-14 03:06:53,087 INFO L226 Difference]: Without dead ends: 93 [2024-11-14 03:06:53,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=251, Invalid=1012, Unknown=1, NotChecked=68, Total=1332 [2024-11-14 03:06:53,089 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 99 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:06:53,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 347 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 443 Invalid, 0 Unknown, 95 Unchecked, 0.8s Time] [2024-11-14 03:06:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-14 03:06:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2024-11-14 03:06:53,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 80 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:06:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2024-11-14 03:06:53,107 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 35 [2024-11-14 03:06:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:06:53,107 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2024-11-14 03:06:53,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-14 03:06:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2024-11-14 03:06:53,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 03:06:53,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:06:53,116 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:06:53,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-14 03:06:53,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2024-11-14 03:06:53,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-14 03:06:53,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:06:53,717 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:06:53,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:06:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1130919966, now seen corresponding path program 3 times [2024-11-14 03:06:53,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:06:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309542703] [2024-11-14 03:06:53,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:06:53,719 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 [2024-11-14 03:06:53,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:06:53,722 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:06:53,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-14 03:06:53,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 03:06:53,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:06:53,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 03:06:53,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:06:53,982 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 [2024-11-14 03:06:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:06:55,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:07:00,674 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:07:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309542703] [2024-11-14 03:07:00,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309542703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:07:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [558744365] [2024-11-14 03:07:00,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:07:00,675 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:07:00,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:07:00,678 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:07:00,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-14 03:07:01,192 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 03:07:01,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:07:01,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 03:07:01,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:01,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:07:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:07:01,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:07:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [558744365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:07:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018687461] [2024-11-14 03:07:07,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:07:07,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:07,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:07:07,723 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:07:07,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 03:07:10,921 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 03:07:10,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:07:10,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 03:07:10,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:10,943 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 [2024-11-14 03:07:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:07:11,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:07:29,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018687461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:07:29,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:07:29,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18, 20, 19, 23] total 68 [2024-11-14 03:07:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123584018] [2024-11-14 03:07:29,968 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:07:29,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-14 03:07:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:07:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-14 03:07:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=3865, Unknown=0, NotChecked=0, Total=4556 [2024-11-14 03:07:29,971 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 68 states, 65 states have (on average 2.123076923076923) internal successors, (138), 64 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:07:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:37,713 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2024-11-14 03:07:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 03:07:37,714 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 65 states have (on average 2.123076923076923) internal successors, (138), 64 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2024-11-14 03:07:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:37,715 INFO L225 Difference]: With dead ends: 84 [2024-11-14 03:07:37,715 INFO L226 Difference]: Without dead ends: 84 [2024-11-14 03:07:37,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=707, Invalid=4123, Unknown=0, NotChecked=0, Total=4830 [2024-11-14 03:07:37,717 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:37,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1143 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-14 03:07:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-14 03:07:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-14 03:07:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 78 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:07:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2024-11-14 03:07:37,722 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 41 [2024-11-14 03:07:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:37,722 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2024-11-14 03:07:37,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 65 states have (on average 2.123076923076923) internal successors, (138), 64 states have internal predecessors, (138), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-14 03:07:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2024-11-14 03:07:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 03:07:37,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:37,724 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:07:37,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-14 03:07:37,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-14 03:07:38,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-11-14 03:07:38,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:07:38,329 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:07:38,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1273637117, now seen corresponding path program 1 times [2024-11-14 03:07:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:07:38,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997717286] [2024-11-14 03:07:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:38,331 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 [2024-11-14 03:07:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:07:38,336 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:07:38,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-14 03:07:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:38,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 03:07:38,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:38,584 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 [2024-11-14 03:07:38,591 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 [2024-11-14 03:07:39,021 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:07:39,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:39,050 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 [2024-11-14 03:07:39,063 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:39,063 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 [2024-11-14 03:07:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2024-11-14 03:07:39,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:39,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:07:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997717286] [2024-11-14 03:07:39,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997717286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:39,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1569020501] [2024-11-14 03:07:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:39,471 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:07:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:07:39,474 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:07:39,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-14 03:07:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:39,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 03:07:39,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:39,962 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 [2024-11-14 03:07:39,970 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 [2024-11-14 03:07:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:40,517 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 [2024-11-14 03:07:40,543 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:40,543 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 [2024-11-14 03:07:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2024-11-14 03:07:40,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1569020501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:40,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138289504] [2024-11-14 03:07:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:40,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:40,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:07:40,862 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:07:40,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 03:07:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:41,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 03:07:41,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:41,063 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 [2024-11-14 03:07:41,070 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 [2024-11-14 03:07:41,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:41,554 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 [2024-11-14 03:07:41,568 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:41,568 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 [2024-11-14 03:07:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2024-11-14 03:07:41,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:43,735 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvmul |c_ULTIMATE.start_alloc_17_~i~0#1| (_ bv4 32)))) (let ((.cse1 (bvadd (_ bv4 32) .cse0 |c_ULTIMATE.start_alloc_17_~array#1.offset|))) (and (or (forall ((|v_ldv_malloc_#res.base_86| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_86|)))) (bvule (bvadd .cse0 |c_ULTIMATE.start_alloc_17_~array#1.offset|) .cse1)) (forall ((|v_ldv_malloc_#res.base_86| (_ BitVec 32))) (or (forall ((v_ArrVal_759 (_ BitVec 32))) (bvule .cse1 (select (store |c_#length| |v_ldv_malloc_#res.base_86| v_ArrVal_759) |c_ULTIMATE.start_alloc_17_~array#1.base|))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_86|)))))))) is different from false [2024-11-14 03:07:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138289504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:43,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:07:43,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-14 03:07:43,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413567217] [2024-11-14 03:07:43,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:07:43,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:07:43,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:07:43,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:07:43,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=109, Unknown=2, NotChecked=42, Total=182 [2024-11-14 03:07:43,743 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:07:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:44,375 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2024-11-14 03:07:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:07:44,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2024-11-14 03:07:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:44,377 INFO L225 Difference]: With dead ends: 114 [2024-11-14 03:07:44,377 INFO L226 Difference]: Without dead ends: 114 [2024-11-14 03:07:44,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=51, Invalid=227, Unknown=2, NotChecked=62, Total=342 [2024-11-14 03:07:44,378 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 43 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:44,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 339 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 284 Invalid, 0 Unknown, 92 Unchecked, 0.5s Time] [2024-11-14 03:07:44,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-14 03:07:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 101. [2024-11-14 03:07:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 94 states have internal predecessors, (106), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 03:07:44,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2024-11-14 03:07:44,383 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 50 [2024-11-14 03:07:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:44,383 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2024-11-14 03:07:44,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:07:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2024-11-14 03:07:44,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 03:07:44,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:44,385 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:07:44,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2024-11-14 03:07:44,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2024-11-14 03:07:44,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 03:07:44,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:44,986 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:07:44,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 100359055, now seen corresponding path program 1 times [2024-11-14 03:07:44,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:07:44,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664114480] [2024-11-14 03:07:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:44,987 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 [2024-11-14 03:07:44,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:07:44,992 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:07:44,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-14 03:07:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:45,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:07:45,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:07:45,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:07:45,236 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:07:45,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664114480] [2024-11-14 03:07:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664114480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:07:45,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:07:45,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:07:45,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559293585] [2024-11-14 03:07:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:07:45,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:07:45,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:07:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:07:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:07:45,238 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:07:45,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:45,274 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2024-11-14 03:07:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:07:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2024-11-14 03:07:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:45,276 INFO L225 Difference]: With dead ends: 105 [2024-11-14 03:07:45,276 INFO L226 Difference]: Without dead ends: 105 [2024-11-14 03:07:45,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:07:45,277 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:45,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 181 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:07:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-14 03:07:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2024-11-14 03:07:45,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 95 states have internal predecessors, (107), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 03:07:45,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-11-14 03:07:45,284 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 52 [2024-11-14 03:07:45,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:45,284 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-11-14 03:07:45,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:07:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-11-14 03:07:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 03:07:45,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:45,286 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:07:45,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-11-14 03:07:45,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:07:45,487 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:07:45,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:45,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1843169390, now seen corresponding path program 1 times [2024-11-14 03:07:45,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:07:45,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273142783] [2024-11-14 03:07:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:45,488 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 [2024-11-14 03:07:45,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:07:45,490 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:07:45,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-14 03:07:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:45,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:07:45,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-14 03:07:45,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:07:45,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:07:45,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273142783] [2024-11-14 03:07:45,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273142783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:07:45,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:07:45,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:07:45,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13160627] [2024-11-14 03:07:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:07:45,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:07:45,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:07:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:07:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:07:45,739 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:07:45,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:45,823 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2024-11-14 03:07:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:07:45,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2024-11-14 03:07:45,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:45,825 INFO L225 Difference]: With dead ends: 107 [2024-11-14 03:07:45,825 INFO L226 Difference]: Without dead ends: 107 [2024-11-14 03:07:45,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:07:45,825 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:45,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 123 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:07:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-14 03:07:45,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-11-14 03:07:45,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 97 states have internal predecessors, (109), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 03:07:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2024-11-14 03:07:45,831 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 52 [2024-11-14 03:07:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:45,832 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2024-11-14 03:07:45,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:07:45,832 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2024-11-14 03:07:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 03:07:45,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:45,834 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:07:45,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-14 03:07:46,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:07:46,035 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:07:46,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2002944033, now seen corresponding path program 1 times [2024-11-14 03:07:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:07:46,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558083717] [2024-11-14 03:07:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:46,036 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 [2024-11-14 03:07:46,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:07:46,038 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:07:46,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-14 03:07:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:46,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:07:46,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-14 03:07:46,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-14 03:07:46,537 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:07:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558083717] [2024-11-14 03:07:46,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558083717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:07:46,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [219397163] [2024-11-14 03:07:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:46,537 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:07:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:07:46,539 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:07:46,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-14 03:07:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:46,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:07:46,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-14 03:07:46,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:47,047 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-14 03:07:47,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [219397163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:07:47,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515556190] [2024-11-14 03:07:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:47,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:47,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:07:47,051 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:07:47,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-14 03:07:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:47,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:07:47,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-14 03:07:47,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-14 03:07:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515556190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:07:47,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:07:47,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4, 4, 4, 4] total 11 [2024-11-14 03:07:47,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125680203] [2024-11-14 03:07:47,465 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:07:47,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 03:07:47,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:07:47,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 03:07:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-14 03:07:47,467 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:07:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:47,787 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2024-11-14 03:07:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 03:07:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2024-11-14 03:07:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:47,789 INFO L225 Difference]: With dead ends: 140 [2024-11-14 03:07:47,790 INFO L226 Difference]: Without dead ends: 140 [2024-11-14 03:07:47,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-11-14 03:07:47,790 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 43 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:47,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 308 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:07:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-14 03:07:47,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2024-11-14 03:07:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 93 states have (on average 1.1935483870967742) internal successors, (111), 98 states have internal predecessors, (111), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-14 03:07:47,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2024-11-14 03:07:47,797 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 55 [2024-11-14 03:07:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:47,798 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2024-11-14 03:07:47,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:07:47,798 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2024-11-14 03:07:47,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 03:07:47,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:47,799 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:07:47,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-14 03:07:48,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-14 03:07:48,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-14 03:07:48,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:07:48,400 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:07:48,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1191903332, now seen corresponding path program 1 times [2024-11-14 03:07:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:07:48,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874773441] [2024-11-14 03:07:48,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:48,401 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 [2024-11-14 03:07:48,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:07:48,403 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:07:48,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-11-14 03:07:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:48,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:07:48,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:48,972 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_50| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_50| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_50|)))) is different from true [2024-11-14 03:07:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:07:48,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:49,095 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2024-11-14 03:07:49,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2024-11-14 03:07:49,468 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:07:49,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874773441] [2024-11-14 03:07:49,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874773441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:49,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1428100017] [2024-11-14 03:07:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:49,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:07:49,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:07:49,471 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:07:49,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-14 03:07:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:49,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:07:49,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:07:50,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:50,664 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2024-11-14 03:07:50,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2024-11-14 03:07:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1428100017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475261654] [2024-11-14 03:07:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:51,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:51,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:07:51,019 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:07:51,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-14 03:07:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:51,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:07:51,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:51,477 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_56| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_56| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_56|)))) is different from true [2024-11-14 03:07:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:07:51,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:51,594 INFO L349 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2024-11-14 03:07:51,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2024-11-14 03:07:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475261654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:51,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:07:51,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2024-11-14 03:07:51,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133477268] [2024-11-14 03:07:51,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:07:51,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:07:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:07:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:07:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=107, Unknown=2, NotChecked=42, Total=182 [2024-11-14 03:07:51,962 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:07:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:07:52,424 INFO L93 Difference]: Finished difference Result 149 states and 177 transitions. [2024-11-14 03:07:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:07:52,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2024-11-14 03:07:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:07:52,426 INFO L225 Difference]: With dead ends: 149 [2024-11-14 03:07:52,426 INFO L226 Difference]: Without dead ends: 139 [2024-11-14 03:07:52,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 306 SyntacticMatches, 10 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=222, Unknown=2, NotChecked=62, Total=342 [2024-11-14 03:07:52,427 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:07:52,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 221 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 146 Invalid, 0 Unknown, 156 Unchecked, 0.3s Time] [2024-11-14 03:07:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-14 03:07:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 125. [2024-11-14 03:07:52,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 112 states have internal predecessors, (127), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 03:07:52,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 150 transitions. [2024-11-14 03:07:52,435 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 150 transitions. Word has length 58 [2024-11-14 03:07:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:07:52,435 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 150 transitions. [2024-11-14 03:07:52,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:07:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2024-11-14 03:07:52,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 03:07:52,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:07:52,437 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:07:52,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-14 03:07:52,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2024-11-14 03:07:52,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-14 03:07:53,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:53,038 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:07:53,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:07:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash 172544029, now seen corresponding path program 1 times [2024-11-14 03:07:53,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:07:53,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617987596] [2024-11-14 03:07:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:53,039 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 [2024-11-14 03:07:53,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:07:53,041 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:07:53,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2024-11-14 03:07:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:53,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 03:07:53,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:53,373 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 [2024-11-14 03:07:53,381 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 [2024-11-14 03:07:53,893 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:07:53,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:53,915 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 [2024-11-14 03:07:53,928 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:53,929 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 [2024-11-14 03:07:54,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:54,110 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 [2024-11-14 03:07:54,127 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:54,127 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 [2024-11-14 03:07:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 149 trivial. 4 not checked. [2024-11-14 03:07:54,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:54,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:07:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617987596] [2024-11-14 03:07:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617987596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [624938118] [2024-11-14 03:07:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:54,544 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:07:54,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:07:54,546 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:07:54,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-14 03:07:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:55,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 03:07:55,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:55,166 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 [2024-11-14 03:07:55,173 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 [2024-11-14 03:07:55,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:55,541 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 [2024-11-14 03:07:55,554 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:55,555 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 [2024-11-14 03:07:55,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:55,634 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 [2024-11-14 03:07:55,646 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:55,646 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 [2024-11-14 03:07:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 149 trivial. 4 not checked. [2024-11-14 03:07:55,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:07:57,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [624938118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:07:57,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159243087] [2024-11-14 03:07:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:07:57,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:07:57,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:07:57,872 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:07:57,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-14 03:07:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:07:58,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 03:07:58,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:07:58,086 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 [2024-11-14 03:07:58,091 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 [2024-11-14 03:07:58,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:58,456 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 [2024-11-14 03:07:58,469 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:58,470 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 [2024-11-14 03:07:58,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:07:58,576 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 [2024-11-14 03:07:58,588 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:07:58,589 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 [2024-11-14 03:07:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 149 trivial. 4 not checked. [2024-11-14 03:07:58,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:00,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159243087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:08:00,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:08:00,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 12 [2024-11-14 03:08:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264675913] [2024-11-14 03:08:00,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:00,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:08:00,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:08:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:08:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=150, Unknown=1, NotChecked=24, Total=210 [2024-11-14 03:08:00,833 INFO L87 Difference]: Start difference. First operand 125 states and 150 transitions. Second operand has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:08:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:01,694 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2024-11-14 03:08:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 03:08:01,695 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-11-14 03:08:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:01,696 INFO L225 Difference]: With dead ends: 137 [2024-11-14 03:08:01,696 INFO L226 Difference]: Without dead ends: 137 [2024-11-14 03:08:01,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=64, Invalid=319, Unknown=1, NotChecked=36, Total=420 [2024-11-14 03:08:01,696 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 46 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:01,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 349 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 353 Invalid, 0 Unknown, 104 Unchecked, 0.6s Time] [2024-11-14 03:08:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-14 03:08:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2024-11-14 03:08:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 106 states have (on average 1.179245283018868) internal successors, (125), 112 states have internal predecessors, (125), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 03:08:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2024-11-14 03:08:01,702 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 60 [2024-11-14 03:08:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:01,702 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2024-11-14 03:08:01,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:08:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2024-11-14 03:08:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 03:08:01,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:01,703 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:01,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-14 03:08:01,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2024-11-14 03:08:02,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2024-11-14 03:08:02,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:08:02,304 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:08:02,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash 53846792, now seen corresponding path program 1 times [2024-11-14 03:08:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:08:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403686474] [2024-11-14 03:08:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:02,305 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 [2024-11-14 03:08:02,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:08:02,307 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:08:02,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2024-11-14 03:08:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:02,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:08:02,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:02,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:03,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-14 03:08:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:03,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:08:03,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403686474] [2024-11-14 03:08:03,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403686474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:03,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [886851466] [2024-11-14 03:08:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:03,952 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:08:03,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:08:03,953 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:08:03,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-14 03:08:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:04,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:08:04,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:04,588 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:04,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:07,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-14 03:08:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [886851466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:07,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579646219] [2024-11-14 03:08:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:07,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:07,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:08:07,261 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:08:07,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-14 03:08:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:07,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:08:07,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:07,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:08,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-14 03:08:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:08,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579646219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:08,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:08:08,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 18 [2024-11-14 03:08:08,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419176566] [2024-11-14 03:08:08,494 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:08,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 03:08:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:08:08,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 03:08:08,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=292, Unknown=1, NotChecked=0, Total=342 [2024-11-14 03:08:08,497 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand has 19 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-14 03:08:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:10,583 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2024-11-14 03:08:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 03:08:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 62 [2024-11-14 03:08:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:10,585 INFO L225 Difference]: With dead ends: 157 [2024-11-14 03:08:10,585 INFO L226 Difference]: Without dead ends: 157 [2024-11-14 03:08:10,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=146, Invalid=783, Unknown=1, NotChecked=0, Total=930 [2024-11-14 03:08:10,586 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 118 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:10,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 373 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:08:10,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-14 03:08:10,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2024-11-14 03:08:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 112 states have internal predecessors, (125), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 03:08:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2024-11-14 03:08:10,598 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 62 [2024-11-14 03:08:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:10,599 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2024-11-14 03:08:10,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.0) internal successors, (54), 17 states have internal predecessors, (54), 5 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-14 03:08:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2024-11-14 03:08:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 03:08:10,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:10,600 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:10,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-14 03:08:10,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2024-11-14 03:08:11,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2024-11-14 03:08:11,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:08:11,201 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:08:11,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:11,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1669250556, now seen corresponding path program 1 times [2024-11-14 03:08:11,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:08:11,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853156001] [2024-11-14 03:08:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:11,202 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 [2024-11-14 03:08:11,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:08:11,204 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:08:11,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2024-11-14 03:08:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:11,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:08:11,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:11,690 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 11 treesize of output 7 [2024-11-14 03:08:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-14 03:08:11,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:08:12,360 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:08:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853156001] [2024-11-14 03:08:12,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853156001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:12,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [338680628] [2024-11-14 03:08:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:12,361 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:08:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:08:12,365 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:08:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-14 03:08:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:12,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:08:12,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:13,037 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 11 treesize of output 7 [2024-11-14 03:08:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-14 03:08:13,176 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:08:13,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [338680628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:13,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016264852] [2024-11-14 03:08:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:13,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:13,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:08:13,264 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:08:13,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-14 03:08:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:13,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:08:13,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:13,620 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 11 treesize of output 7 [2024-11-14 03:08:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-14 03:08:13,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:08:13,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016264852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:13,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:08:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 12, 8, 12, 8] total 17 [2024-11-14 03:08:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599700721] [2024-11-14 03:08:13,833 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:13,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 03:08:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:08:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 03:08:13,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:08:13,835 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 03:08:16,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:18,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:19,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:19,183 INFO L93 Difference]: Finished difference Result 147 states and 171 transitions. [2024-11-14 03:08:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 03:08:19,185 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2024-11-14 03:08:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:19,186 INFO L225 Difference]: With dead ends: 147 [2024-11-14 03:08:19,186 INFO L226 Difference]: Without dead ends: 147 [2024-11-14 03:08:19,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 354 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 03:08:19,187 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 108 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:19,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 299 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 323 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2024-11-14 03:08:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-14 03:08:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 132. [2024-11-14 03:08:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 118 states have internal predecessors, (131), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 03:08:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 154 transitions. [2024-11-14 03:08:19,193 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 154 transitions. Word has length 63 [2024-11-14 03:08:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:19,193 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 154 transitions. [2024-11-14 03:08:19,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 03:08:19,194 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 154 transitions. [2024-11-14 03:08:19,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-14 03:08:19,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:19,195 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:19,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2024-11-14 03:08:19,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2024-11-14 03:08:19,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-14 03:08:19,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:19,796 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:08:19,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash 207159783, now seen corresponding path program 1 times [2024-11-14 03:08:19,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:08:19,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053881347] [2024-11-14 03:08:19,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:19,796 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 [2024-11-14 03:08:19,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:08:19,799 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:08:19,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2024-11-14 03:08:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:20,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 03:08:20,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:21,262 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 15 treesize of output 1 [2024-11-14 03:08:22,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:08:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 03:08:22,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:08:22,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:08:22,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053881347] [2024-11-14 03:08:22,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053881347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:22,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [332119126] [2024-11-14 03:08:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:22,815 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:08:22,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:08:22,817 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:08:22,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2024-11-14 03:08:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:23,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:08:23,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:23,823 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 15 treesize of output 1 [2024-11-14 03:08:24,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:08:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:24,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:08:24,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [332119126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:24,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410934289] [2024-11-14 03:08:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:24,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:24,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:08:24,523 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:08:24,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-14 03:08:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:24,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:08:24,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:24,956 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 15 treesize of output 1 [2024-11-14 03:08:25,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:08:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:25,264 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:08:25,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410934289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:25,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:08:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 13, 8, 13, 8] total 32 [2024-11-14 03:08:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55385160] [2024-11-14 03:08:25,384 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:25,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-14 03:08:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:08:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-14 03:08:25,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2024-11-14 03:08:25,386 INFO L87 Difference]: Start difference. First operand 132 states and 154 transitions. Second operand has 33 states, 32 states have (on average 2.5625) internal successors, (82), 28 states have internal predecessors, (82), 7 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-14 03:08:27,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:29,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:31,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:34,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:36,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:38,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:08:42,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:42,860 INFO L93 Difference]: Finished difference Result 151 states and 174 transitions. [2024-11-14 03:08:42,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 03:08:42,861 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.5625) internal successors, (82), 28 states have internal predecessors, (82), 7 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 64 [2024-11-14 03:08:42,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:42,862 INFO L225 Difference]: With dead ends: 151 [2024-11-14 03:08:42,863 INFO L226 Difference]: Without dead ends: 149 [2024-11-14 03:08:42,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 345 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=407, Invalid=2563, Unknown=0, NotChecked=0, Total=2970 [2024-11-14 03:08:42,865 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 170 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 23 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:42,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 410 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 699 Invalid, 6 Unknown, 0 Unchecked, 14.6s Time] [2024-11-14 03:08:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-14 03:08:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 137. [2024-11-14 03:08:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 116 states have (on average 1.1637931034482758) internal successors, (135), 122 states have internal predecessors, (135), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 03:08:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 158 transitions. [2024-11-14 03:08:42,872 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 158 transitions. Word has length 64 [2024-11-14 03:08:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:42,872 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 158 transitions. [2024-11-14 03:08:42,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.5625) internal successors, (82), 28 states have internal predecessors, (82), 7 states have call successors, (8), 5 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-14 03:08:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 158 transitions. [2024-11-14 03:08:42,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 03:08:42,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:42,874 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:42,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2024-11-14 03:08:43,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-14 03:08:43,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2024-11-14 03:08:43,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:08:43,475 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:08:43,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2126986078, now seen corresponding path program 1 times [2024-11-14 03:08:43,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:08:43,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430484752] [2024-11-14 03:08:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:43,476 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 [2024-11-14 03:08:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:08:43,480 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:08:43,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2024-11-14 03:08:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:43,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 03:08:43,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:43,957 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 [2024-11-14 03:08:44,129 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 15 treesize of output 1 [2024-11-14 03:08:44,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:08:44,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:08:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:44,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:45,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:08:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430484752] [2024-11-14 03:08:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430484752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1075442600] [2024-11-14 03:08:45,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:45,231 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:08:45,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:08:45,233 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:08:45,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-14 03:08:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:45,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:08:45,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:45,977 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 [2024-11-14 03:08:46,034 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 15 treesize of output 1 [2024-11-14 03:08:46,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:08:46,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:08:46,172 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:46,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1075442600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269830217] [2024-11-14 03:08:46,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:46,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:08:46,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:08:46,485 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:08:46,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-14 03:08:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:46,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 03:08:46,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:46,918 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 [2024-11-14 03:08:47,013 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 15 treesize of output 1 [2024-11-14 03:08:47,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:08:47,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:08:47,215 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:47,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:49,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269830217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:49,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:08:49,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13, 9, 13, 9] total 20 [2024-11-14 03:08:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841509636] [2024-11-14 03:08:49,615 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:08:49,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 03:08:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:08:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 03:08:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=369, Unknown=1, NotChecked=0, Total=420 [2024-11-14 03:08:49,616 INFO L87 Difference]: Start difference. First operand 137 states and 158 transitions. Second operand has 21 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 4 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 03:08:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:53,118 INFO L93 Difference]: Finished difference Result 181 states and 215 transitions. [2024-11-14 03:08:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-14 03:08:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 4 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2024-11-14 03:08:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:53,121 INFO L225 Difference]: With dead ends: 181 [2024-11-14 03:08:53,121 INFO L226 Difference]: Without dead ends: 181 [2024-11-14 03:08:53,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 368 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=188, Invalid=1533, Unknown=1, NotChecked=0, Total=1722 [2024-11-14 03:08:53,123 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:53,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 336 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-14 03:08:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-14 03:08:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 160. [2024-11-14 03:08:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 143 states have internal predecessors, (162), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (19), 13 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-14 03:08:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 191 transitions. [2024-11-14 03:08:53,135 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 191 transitions. Word has length 65 [2024-11-14 03:08:53,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:53,136 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 191 transitions. [2024-11-14 03:08:53,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 4 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-14 03:08:53,136 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 191 transitions. [2024-11-14 03:08:53,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 03:08:53,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:53,137 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:53,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2024-11-14 03:08:53,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-14 03:08:53,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-14 03:08:53,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:08:53,738 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:08:53,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1956630305, now seen corresponding path program 2 times [2024-11-14 03:08:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:08:53,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390625697] [2024-11-14 03:08:53,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:08:53,739 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 [2024-11-14 03:08:53,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:08:53,741 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:08:53,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2024-11-14 03:08:53,987 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:08:53,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:08:53,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:08:53,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:08:54,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:08:54,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:08:54,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390625697] [2024-11-14 03:08:54,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390625697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:08:54,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:08:54,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:08:54,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035737592] [2024-11-14 03:08:54,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:08:54,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:08:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:08:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:08:54,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:08:54,113 INFO L87 Difference]: Start difference. First operand 160 states and 191 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:08:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:08:54,177 INFO L93 Difference]: Finished difference Result 122 states and 130 transitions. [2024-11-14 03:08:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:08:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2024-11-14 03:08:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:08:54,179 INFO L225 Difference]: With dead ends: 122 [2024-11-14 03:08:54,179 INFO L226 Difference]: Without dead ends: 118 [2024-11-14 03:08:54,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:08:54,181 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:08:54,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:08:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-14 03:08:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2024-11-14 03:08:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 99 states have (on average 1.121212121212121) internal successors, (111), 105 states have internal predecessors, (111), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-14 03:08:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2024-11-14 03:08:54,187 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 65 [2024-11-14 03:08:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:08:54,187 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2024-11-14 03:08:54,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:08:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2024-11-14 03:08:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-14 03:08:54,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:08:54,188 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:08:54,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2024-11-14 03:08:54,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:08:54,389 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:08:54,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:08:54,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1512059082, now seen corresponding path program 1 times [2024-11-14 03:08:54,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:08:54,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873897400] [2024-11-14 03:08:54,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:54,390 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 [2024-11-14 03:08:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:08:54,392 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:08:54,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2024-11-14 03:08:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:08:54,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-14 03:08:54,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:08:54,754 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 [2024-11-14 03:08:55,266 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:08:55,267 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 [2024-11-14 03:08:55,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:08:55,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 03:08:57,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-14 03:08:58,053 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 16 treesize of output 13 [2024-11-14 03:08:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 03:08:58,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:08:58,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-14 03:08:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 03:08:59,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:08:59,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873897400] [2024-11-14 03:08:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873897400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:08:59,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [462046478] [2024-11-14 03:08:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:08:59,811 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:08:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:08:59,815 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:08:59,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2024-11-14 03:09:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:00,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 03:09:00,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:00,396 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 [2024-11-14 03:09:00,762 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:00,763 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 [2024-11-14 03:09:00,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:09:00,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-14 03:09:03,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-14 03:09:03,123 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 16 treesize of output 13 [2024-11-14 03:09:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 03:09:03,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:07,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-14 03:09:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 03:09:07,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [462046478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:07,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772881140] [2024-11-14 03:09:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:07,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:07,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:09:07,940 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:09:07,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-14 03:09:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:08,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 03:09:08,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:08,232 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 [2024-11-14 03:09:08,587 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:08,587 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 [2024-11-14 03:09:08,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:09:10,852 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_45| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_45| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_45|) (_ bv0 32))))) is different from true [2024-11-14 03:09:11,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-14 03:09:11,174 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 16 treesize of output 13 [2024-11-14 03:09:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 145 trivial. 6 not checked. [2024-11-14 03:09:11,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:11,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-14 03:09:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:09:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772881140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:12,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:09:12,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15, 14, 15, 13] total 33 [2024-11-14 03:09:12,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881721835] [2024-11-14 03:09:12,117 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:09:12,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 03:09:12,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:09:12,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 03:09:12,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=4, NotChecked=62, Total=1122 [2024-11-14 03:09:12,119 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 30 states have internal predecessors, (82), 7 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-14 03:09:14,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:09:16,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:09:18,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:09:24,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:09:26,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:09:28,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:09:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:09:29,926 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2024-11-14 03:09:29,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-14 03:09:29,927 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 30 states have internal predecessors, (82), 7 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) Word has length 66 [2024-11-14 03:09:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:09:29,928 INFO L225 Difference]: With dead ends: 126 [2024-11-14 03:09:29,928 INFO L226 Difference]: Without dead ends: 126 [2024-11-14 03:09:29,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 344 SyntacticMatches, 16 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=291, Invalid=2259, Unknown=4, NotChecked=98, Total=2652 [2024-11-14 03:09:29,929 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 104 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 24 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:09:29,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 447 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 710 Invalid, 6 Unknown, 87 Unchecked, 13.9s Time] [2024-11-14 03:09:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-14 03:09:29,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 121. [2024-11-14 03:09:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 109 states have internal predecessors, (116), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-14 03:09:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 129 transitions. [2024-11-14 03:09:29,935 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 129 transitions. Word has length 66 [2024-11-14 03:09:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:09:29,936 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 129 transitions. [2024-11-14 03:09:29,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 30 states have internal predecessors, (82), 7 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (9), 8 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-14 03:09:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 129 transitions. [2024-11-14 03:09:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 03:09:29,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:09:29,937 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:09:29,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2024-11-14 03:09:30,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-14 03:09:30,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (52)] Ended with exit code 0 [2024-11-14 03:09:30,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:09:30,539 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:09:30,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:09:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1527951543, now seen corresponding path program 2 times [2024-11-14 03:09:30,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:09:30,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145344976] [2024-11-14 03:09:30,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:09:30,539 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 [2024-11-14 03:09:30,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:09:30,541 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:09:30,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2024-11-14 03:09:30,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:09:30,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:09:30,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 03:09:30,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:30,932 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 [2024-11-14 03:09:30,942 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 [2024-11-14 03:09:31,663 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:09:31,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:31,693 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 [2024-11-14 03:09:31,716 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:31,716 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 [2024-11-14 03:09:31,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:31,958 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 [2024-11-14 03:09:31,982 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:31,982 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 [2024-11-14 03:09:32,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:32,258 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 [2024-11-14 03:09:32,285 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:32,285 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 [2024-11-14 03:09:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 157 trivial. 6 not checked. [2024-11-14 03:09:32,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:33,001 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:09:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145344976] [2024-11-14 03:09:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145344976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:09:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1734590191] [2024-11-14 03:09:33,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:09:33,002 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:09:33,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:09:33,004 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:09:33,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2024-11-14 03:09:33,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:09:33,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:09:33,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 03:09:33,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:33,784 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 [2024-11-14 03:09:33,793 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 [2024-11-14 03:09:34,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:34,455 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 [2024-11-14 03:09:34,473 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:34,473 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 [2024-11-14 03:09:34,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:34,622 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 [2024-11-14 03:09:34,642 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:34,642 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 [2024-11-14 03:09:34,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:34,793 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 [2024-11-14 03:09:34,812 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:34,812 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 [2024-11-14 03:09:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 157 trivial. 6 not checked. [2024-11-14 03:09:34,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1734590191] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:09:35,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479198493] [2024-11-14 03:09:35,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:09:35,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:35,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:09:35,211 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:09:35,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-14 03:09:35,531 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:09:35,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:09:35,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-14 03:09:35,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:35,563 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 [2024-11-14 03:09:35,574 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 [2024-11-14 03:09:36,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:36,124 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 [2024-11-14 03:09:36,145 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:36,145 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 [2024-11-14 03:09:36,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:36,305 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 [2024-11-14 03:09:36,328 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:36,329 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 [2024-11-14 03:09:36,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:09:36,473 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 [2024-11-14 03:09:36,498 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:09:36,498 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 [2024-11-14 03:09:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 157 trivial. 6 not checked. [2024-11-14 03:09:36,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:38,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479198493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:09:38,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:09:38,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-11-14 03:09:38,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183556476] [2024-11-14 03:09:38,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:09:38,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-14 03:09:38,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:09:38,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-14 03:09:38,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=200, Unknown=1, NotChecked=28, Total=272 [2024-11-14 03:09:38,918 INFO L87 Difference]: Start difference. First operand 121 states and 129 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:09:40,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:09:40,213 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2024-11-14 03:09:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 03:09:40,214 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 70 [2024-11-14 03:09:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:09:40,215 INFO L225 Difference]: With dead ends: 124 [2024-11-14 03:09:40,215 INFO L226 Difference]: Without dead ends: 124 [2024-11-14 03:09:40,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=65, Invalid=358, Unknown=1, NotChecked=38, Total=462 [2024-11-14 03:09:40,216 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 19 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:09:40,216 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 346 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 353 Invalid, 0 Unknown, 77 Unchecked, 0.9s Time] [2024-11-14 03:09:40,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-14 03:09:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2024-11-14 03:09:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 103 states have (on average 1.116504854368932) internal successors, (115), 109 states have internal predecessors, (115), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-14 03:09:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2024-11-14 03:09:40,220 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 70 [2024-11-14 03:09:40,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:09:40,221 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2024-11-14 03:09:40,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:09:40,221 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2024-11-14 03:09:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 03:09:40,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:09:40,222 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:09:40,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (55)] Ended with exit code 0 [2024-11-14 03:09:40,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-14 03:09:40,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2024-11-14 03:09:40,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:09:40,823 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:09:40,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:09:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash 135155685, now seen corresponding path program 1 times [2024-11-14 03:09:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:09:40,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314758818] [2024-11-14 03:09:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:40,825 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 [2024-11-14 03:09:40,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:09:40,828 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:09:40,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2024-11-14 03:09:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:41,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:09:41,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-14 03:09:41,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-14 03:09:41,495 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:09:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314758818] [2024-11-14 03:09:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314758818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:41,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [726734167] [2024-11-14 03:09:41,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:41,496 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:09:41,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:09:41,498 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:09:41,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2024-11-14 03:09:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:42,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:09:42,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-14 03:09:42,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-14 03:09:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [726734167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:42,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736414770] [2024-11-14 03:09:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:42,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:42,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:09:42,376 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:09:42,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-14 03:09:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:42,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:09:42,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-14 03:09:42,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-14 03:09:43,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736414770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:43,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:09:43,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 13 [2024-11-14 03:09:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395137870] [2024-11-14 03:09:43,131 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:09:43,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:09:43,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:09:43,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:09:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:09:43,133 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:09:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:09:43,449 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2024-11-14 03:09:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:09:43,450 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 69 [2024-11-14 03:09:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:09:43,451 INFO L225 Difference]: With dead ends: 128 [2024-11-14 03:09:43,451 INFO L226 Difference]: Without dead ends: 128 [2024-11-14 03:09:43,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-14 03:09:43,452 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:09:43,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 273 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:09:43,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-14 03:09:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-14 03:09:43,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 116 states have internal predecessors, (122), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-14 03:09:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2024-11-14 03:09:43,460 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 69 [2024-11-14 03:09:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:09:43,461 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2024-11-14 03:09:43,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:09:43,461 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2024-11-14 03:09:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-14 03:09:43,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:09:43,463 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-14 03:09:43,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2024-11-14 03:09:43,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (58)] Ended with exit code 0 [2024-11-14 03:09:43,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-14 03:09:44,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:44,064 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:09:44,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:09:44,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1268022920, now seen corresponding path program 1 times [2024-11-14 03:09:44,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:09:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059450790] [2024-11-14 03:09:44,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:44,065 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 [2024-11-14 03:09:44,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:09:44,067 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:09:44,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2024-11-14 03:09:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:44,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:09:44,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-14 03:09:44,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:44,583 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 03:09:44,583 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 16 treesize of output 15 [2024-11-14 03:09:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-14 03:09:44,683 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:09:44,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059450790] [2024-11-14 03:09:44,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059450790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:44,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2111454782] [2024-11-14 03:09:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:44,684 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:09:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:09:44,687 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:09:44,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2024-11-14 03:09:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:45,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:09:45,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-14 03:09:45,432 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:45,478 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 03:09:45,478 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 16 treesize of output 15 [2024-11-14 03:09:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-14 03:09:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2111454782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079649772] [2024-11-14 03:09:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:45,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:09:45,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:09:45,570 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:09:45,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-14 03:09:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:45,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:09:45,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-14 03:09:46,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:46,052 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-14 03:09:46,052 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 16 treesize of output 15 [2024-11-14 03:09:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-14 03:09:46,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079649772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:09:46,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:09:46,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2024-11-14 03:09:46,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925976538] [2024-11-14 03:09:46,146 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:09:46,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:09:46,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:09:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:09:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:09:46,147 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:09:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:09:46,293 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2024-11-14 03:09:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:09:46,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2024-11-14 03:09:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:09:46,295 INFO L225 Difference]: With dead ends: 131 [2024-11-14 03:09:46,295 INFO L226 Difference]: Without dead ends: 131 [2024-11-14 03:09:46,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:09:46,296 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:09:46,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 67 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:09:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-14 03:09:46,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 122. [2024-11-14 03:09:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 105 states have (on average 1.1047619047619048) internal successors, (116), 110 states have internal predecessors, (116), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-14 03:09:46,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2024-11-14 03:09:46,302 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 73 [2024-11-14 03:09:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:09:46,302 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2024-11-14 03:09:46,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:09:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2024-11-14 03:09:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 03:09:46,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:09:46,304 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-14 03:09:46,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-14 03:09:46,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Ended with exit code 0 [2024-11-14 03:09:46,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2024-11-14 03:09:46,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:09:46,905 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:09:46,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:09:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1200689819, now seen corresponding path program 1 times [2024-11-14 03:09:46,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:09:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655372769] [2024-11-14 03:09:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:09:46,906 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 [2024-11-14 03:09:46,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:09:46,908 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:09:46,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2024-11-14 03:09:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:09:47,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 03:09:47,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:09:48,442 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 15 treesize of output 1 [2024-11-14 03:09:48,710 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:09:48,710 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 37 treesize of output 29 [2024-11-14 03:09:48,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2024-11-14 03:09:53,518 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_65| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_65|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_65| (_ bv0 1))))) is different from true [2024-11-14 03:09:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-14 03:09:53,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:09:56,315 INFO L349 Elim1Store]: treesize reduction 158, result has 4.8 percent of original size [2024-11-14 03:09:56,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 285 treesize of output 244 [2024-11-14 03:10:11,524 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:10:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655372769] [2024-11-14 03:10:11,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655372769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:10:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2011567870] [2024-11-14 03:10:11,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:10:11,525 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:10:11,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:10:11,527 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:10:11,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2024-11-14 03:10:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:10:12,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-14 03:10:12,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:10:19,187 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 15 treesize of output 1 [2024-11-14 03:10:19,750 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-14 03:10:19,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 32 [2024-11-14 03:10:20,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2024-11-14 03:10:23,454 WARN L873 $PredicateComparison]: unable to prove that (and (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1)) (exists ((|v_ULTIMATE.start_alloc_17_#t~mem44#1.base_69| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_67| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_67|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_69| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~array~0#1.base_67| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_69|)) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_67| (_ bv1 1)) |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_69| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~array~0#1.base_67|)))))) is different from true [2024-11-14 03:10:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-14 03:10:23,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:10:26,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-14 03:10:42,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2011567870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:10:42,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732706058] [2024-11-14 03:10:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:10:42,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:10:42,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:10:42,397 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:10:42,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-14 03:10:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:10:42,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-14 03:10:42,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:10:43,453 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 15 treesize of output 1 [2024-11-14 03:10:43,531 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:10:43,531 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 37 treesize of output 29 [2024-11-14 03:10:43,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2024-11-14 03:10:43,998 WARN L873 $PredicateComparison]: unable to prove that (and (or (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1))) (exists ((|v_ULTIMATE.start_alloc_17_#t~mem44#1.base_72| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| (select |c_#valid| |c_ULTIMATE.start_entry_point_~array~0#1.base|)) |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_72| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_72|))))) (= |c_ULTIMATE.start_alloc_17_~j~0#1| (_ bv0 32)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base|))) is different from true [2024-11-14 03:10:49,066 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-14 03:10:49,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:11:35,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732706058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:11:35,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:11:35,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 34 [2024-11-14 03:11:35,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306294595] [2024-11-14 03:11:35,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:11:35,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-14 03:11:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:11:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-14 03:11:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=3226, Unknown=37, NotChecked=354, Total=3906 [2024-11-14 03:11:35,429 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand has 35 states, 32 states have (on average 2.59375) internal successors, (83), 31 states have internal predecessors, (83), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:11:38,879 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_17_~array#1.base|) (_ bv0 32))) (.cse0 (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)))) (.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| (select |c_#valid| |c_ULTIMATE.start_entry_point_~array~0#1.base|)))) (and (or .cse0 (exists ((|v_ULTIMATE.start_alloc_17_#t~mem44#1.base_69| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_69|)) (= (store .cse1 |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_69| (_ bv0 1)) |c_#valid|)))) (= (_ bv0 32) |c_ULTIMATE.start_alloc_17_~array#1.offset|) (= |c_#valid| (store .cse1 .cse2 (select |c_#valid| .cse2))) (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1)) (= |c_ULTIMATE.start_entry_point_~array~0#1.base| |c_ULTIMATE.start_alloc_17_~array#1.base|) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| .cse2)) (= (_ bv0 1) (select |c_#valid| (_ bv0 32))) (or .cse0 (exists ((|v_ULTIMATE.start_alloc_17_#t~mem44#1.base_72| (_ BitVec 32))) (and (= |c_#valid| (store .cse1 |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_72| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_72|))))) (= |c_ULTIMATE.start_alloc_17_~j~0#1| (_ bv0 32)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base|)))) is different from true [2024-11-14 03:11:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:11:42,429 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2024-11-14 03:11:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 03:11:42,430 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 2.59375) internal successors, (83), 31 states have internal predecessors, (83), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 75 [2024-11-14 03:11:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:11:42,431 INFO L225 Difference]: With dead ends: 129 [2024-11-14 03:11:42,431 INFO L226 Difference]: Without dead ends: 109 [2024-11-14 03:11:42,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 245 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 104.6s TimeCoverageRelationStatistics Valid=468, Invalid=5209, Unknown=39, NotChecked=604, Total=6320 [2024-11-14 03:11:42,433 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 73 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:11:42,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 490 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 834 Invalid, 1 Unknown, 260 Unchecked, 2.3s Time] [2024-11-14 03:11:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-14 03:11:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-14 03:11:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 93 states have (on average 1.10752688172043) internal successors, (103), 98 states have internal predecessors, (103), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-14 03:11:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 115 transitions. [2024-11-14 03:11:42,437 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 115 transitions. Word has length 75 [2024-11-14 03:11:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:11:42,437 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 115 transitions. [2024-11-14 03:11:42,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 2.59375) internal successors, (83), 31 states have internal predecessors, (83), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:11:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 115 transitions. [2024-11-14 03:11:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 03:11:42,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:11:42,438 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:11:42,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (64)] Ended with exit code 0 [2024-11-14 03:11:42,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Ended with exit code 0 [2024-11-14 03:11:42,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2024-11-14 03:11:43,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:11:43,039 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:11:43,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:11:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1950148120, now seen corresponding path program 1 times [2024-11-14 03:11:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:11:43,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723168191] [2024-11-14 03:11:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:11:43,040 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 [2024-11-14 03:11:43,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:11:43,042 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:11:43,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2024-11-14 03:11:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:11:43,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:11:43,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:11:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:11:43,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:11:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:11:43,633 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:11:43,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723168191] [2024-11-14 03:11:43,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723168191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:11:43,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [542978474] [2024-11-14 03:11:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:11:43,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:11:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:11:43,635 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:11:43,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2024-11-14 03:11:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:11:44,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:11:44,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:11:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:11:44,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:11:44,409 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:11:44,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [542978474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:11:44,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782457808] [2024-11-14 03:11:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:11:44,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:11:44,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:11:44,413 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:11:44,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-14 03:11:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:11:44,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:11:44,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:11:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:11:44,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:11:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:11:44,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782457808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:11:44,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:11:44,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2024-11-14 03:11:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213414548] [2024-11-14 03:11:44,883 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:11:44,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:11:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:11:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:11:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-14 03:11:44,884 INFO L87 Difference]: Start difference. First operand 109 states and 115 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:11:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:11:45,179 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2024-11-14 03:11:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:11:45,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 78 [2024-11-14 03:11:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:11:45,180 INFO L225 Difference]: With dead ends: 120 [2024-11-14 03:11:45,181 INFO L226 Difference]: Without dead ends: 120 [2024-11-14 03:11:45,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:11:45,181 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:11:45,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 198 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:11:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-14 03:11:45,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-14 03:11:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 104 states have (on average 1.0865384615384615) internal successors, (113), 108 states have internal predecessors, (113), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-14 03:11:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2024-11-14 03:11:45,185 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 78 [2024-11-14 03:11:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:11:45,186 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2024-11-14 03:11:45,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:11:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2024-11-14 03:11:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 03:11:45,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:11:45,188 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:11:45,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-14 03:11:45,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (67)] Ended with exit code 0 [2024-11-14 03:11:45,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Ended with exit code 0 [2024-11-14 03:11:45,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:11:45,789 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:11:45,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:11:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1298655023, now seen corresponding path program 3 times [2024-11-14 03:11:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:11:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754600479] [2024-11-14 03:11:45,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:11:45,790 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 [2024-11-14 03:11:45,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:11:45,792 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:11:45,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2024-11-14 03:11:46,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 03:11:46,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:11:46,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-14 03:11:46,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:11:46,220 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 [2024-11-14 03:11:46,702 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2024-11-14 03:11:46,755 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-14 03:11:46,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-14 03:11:47,279 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:11:47,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:47,339 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-14 03:11:47,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 26 [2024-11-14 03:11:47,366 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:47,366 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 [2024-11-14 03:11:47,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:47,762 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 [2024-11-14 03:11:47,781 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:47,781 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 [2024-11-14 03:11:48,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:48,048 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 [2024-11-14 03:11:48,065 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:48,065 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 [2024-11-14 03:11:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 157 trivial. 14 not checked. [2024-11-14 03:11:48,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:11:52,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:11:52,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754600479] [2024-11-14 03:11:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754600479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:11:52,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [134326142] [2024-11-14 03:11:52,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:11:52,758 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:11:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:11:52,760 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:11:52,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2024-11-14 03:11:53,415 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 03:11:53,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:11:53,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-14 03:11:53,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:11:53,437 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 [2024-11-14 03:11:53,447 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 [2024-11-14 03:11:54,459 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:54,459 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 [2024-11-14 03:11:54,474 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 [2024-11-14 03:11:54,781 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 03:11:54,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-14 03:11:54,818 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:54,818 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 [2024-11-14 03:11:55,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:55,163 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 [2024-11-14 03:11:55,187 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:55,187 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 [2024-11-14 03:11:55,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:55,334 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 [2024-11-14 03:11:55,354 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:55,354 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 [2024-11-14 03:11:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 161 trivial. 12 not checked. [2024-11-14 03:11:55,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:11:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [134326142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:11:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393583948] [2024-11-14 03:11:57,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:11:57,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:11:57,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:11:57,795 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:11:57,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-14 03:11:58,168 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 03:11:58,168 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:11:58,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 03:11:58,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:11:58,200 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 [2024-11-14 03:11:58,214 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 [2024-11-14 03:11:58,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:58,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:11:58,899 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:58,899 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 [2024-11-14 03:11:59,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:59,070 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 [2024-11-14 03:11:59,090 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:59,090 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 [2024-11-14 03:11:59,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:59,248 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 [2024-11-14 03:11:59,269 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:59,270 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 [2024-11-14 03:11:59,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:11:59,434 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 [2024-11-14 03:11:59,459 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:11:59,459 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 [2024-11-14 03:11:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 169 trivial. 8 not checked. [2024-11-14 03:11:59,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:00,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393583948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:00,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:12:00,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 16] total 29 [2024-11-14 03:12:00,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109575007] [2024-11-14 03:12:00,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:12:00,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-14 03:12:00,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:12:00,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-14 03:12:00,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=779, Unknown=4, NotChecked=114, Total=992 [2024-11-14 03:12:00,044 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 25 states have internal predecessors, (59), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-14 03:12:02,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:02,982 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2024-11-14 03:12:02,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 03:12:02,983 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 25 states have internal predecessors, (59), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) Word has length 80 [2024-11-14 03:12:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:02,984 INFO L225 Difference]: With dead ends: 128 [2024-11-14 03:12:02,984 INFO L226 Difference]: Without dead ends: 128 [2024-11-14 03:12:02,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=157, Invalid=1329, Unknown=4, NotChecked=150, Total=1640 [2024-11-14 03:12:02,986 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:02,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 592 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 751 Invalid, 0 Unknown, 166 Unchecked, 2.1s Time] [2024-11-14 03:12:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-14 03:12:02,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2024-11-14 03:12:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 107 states have (on average 1.0841121495327102) internal successors, (116), 111 states have internal predecessors, (116), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 03:12:02,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2024-11-14 03:12:02,991 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 80 [2024-11-14 03:12:02,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:02,991 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2024-11-14 03:12:02,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.107142857142857) internal successors, (59), 25 states have internal predecessors, (59), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-14 03:12:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2024-11-14 03:12:02,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 03:12:02,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:02,992 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:12:03,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Ended with exit code 0 [2024-11-14 03:12:03,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-14 03:12:03,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2024-11-14 03:12:03,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:12:03,594 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:12:03,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1064403829, now seen corresponding path program 2 times [2024-11-14 03:12:03,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:12:03,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146372540] [2024-11-14 03:12:03,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:12:03,595 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 [2024-11-14 03:12:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:12:03,597 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:12:03,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2024-11-14 03:12:03,964 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:12:03,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:12:03,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 03:12:03,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:04,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:04,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-14 03:12:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:07,075 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:12:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146372540] [2024-11-14 03:12:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146372540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222682161] [2024-11-14 03:12:07,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:12:07,075 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:12:07,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:12:07,077 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:12:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (73)] Waiting until timeout for monitored process [2024-11-14 03:12:07,836 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:12:07,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:12:07,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:12:07,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:08,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:08,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-14 03:12:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:10,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [222682161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286943195] [2024-11-14 03:12:10,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:12:10,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:10,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:10,033 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:10,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-14 03:12:10,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:12:10,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:12:10,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:12:10,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:10,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:10,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-14 03:12:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286943195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:11,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:12:11,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 10, 10, 10] total 25 [2024-11-14 03:12:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883032401] [2024-11-14 03:12:11,862 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:12:11,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-14 03:12:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:12:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-14 03:12:11,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2024-11-14 03:12:11,863 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 26 states, 25 states have (on average 4.12) internal successors, (103), 24 states have internal predecessors, (103), 10 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-14 03:12:15,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:15,495 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2024-11-14 03:12:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-14 03:12:15,496 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.12) internal successors, (103), 24 states have internal predecessors, (103), 10 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 79 [2024-11-14 03:12:15,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:15,497 INFO L225 Difference]: With dead ends: 161 [2024-11-14 03:12:15,497 INFO L226 Difference]: Without dead ends: 161 [2024-11-14 03:12:15,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=262, Invalid=1544, Unknown=0, NotChecked=0, Total=1806 [2024-11-14 03:12:15,499 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 254 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:15,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 489 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 03:12:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-14 03:12:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 139. [2024-11-14 03:12:15,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 122 states have (on average 1.1557377049180328) internal successors, (141), 126 states have internal predecessors, (141), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 03:12:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2024-11-14 03:12:15,505 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 79 [2024-11-14 03:12:15,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:15,505 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2024-11-14 03:12:15,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.12) internal successors, (103), 24 states have internal predecessors, (103), 10 states have call successors, (10), 1 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-14 03:12:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2024-11-14 03:12:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 03:12:15,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:15,506 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:12:15,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Ended with exit code 0 [2024-11-14 03:12:15,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (73)] Forceful destruction successful, exit code 0 [2024-11-14 03:12:15,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-14 03:12:16,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:16,107 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:12:16,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1363219673, now seen corresponding path program 1 times [2024-11-14 03:12:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:12:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833911443] [2024-11-14 03:12:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:16,107 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 [2024-11-14 03:12:16,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:12:16,109 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:12:16,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2024-11-14 03:12:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:16,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:12:16,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:16,858 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 11 treesize of output 7 [2024-11-14 03:12:17,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:17,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-14 03:12:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:12:17,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:18,284 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:18,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:12:18,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833911443] [2024-11-14 03:12:18,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833911443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:18,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1446680266] [2024-11-14 03:12:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:18,285 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:12:18,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:12:18,287 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:12:18,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (76)] Waiting until timeout for monitored process [2024-11-14 03:12:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:20,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:12:20,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:20,233 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 11 treesize of output 7 [2024-11-14 03:12:20,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:20,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-14 03:12:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:12:21,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:21,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1446680266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:21,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232558416] [2024-11-14 03:12:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:21,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:21,256 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:21,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-14 03:12:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:21,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:12:21,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:21,842 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 11 treesize of output 7 [2024-11-14 03:12:22,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:22,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 18 [2024-11-14 03:12:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:12:22,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:22,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232558416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:22,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:12:22,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 15, 10, 15, 10] total 22 [2024-11-14 03:12:22,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312616366] [2024-11-14 03:12:22,632 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:12:22,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 03:12:22,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:12:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 03:12:22,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2024-11-14 03:12:22,634 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-14 03:12:24,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:12:26,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:12:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:31,378 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2024-11-14 03:12:31,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-14 03:12:31,378 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 80 [2024-11-14 03:12:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:31,379 INFO L225 Difference]: With dead ends: 150 [2024-11-14 03:12:31,379 INFO L226 Difference]: Without dead ends: 150 [2024-11-14 03:12:31,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 446 SyntacticMatches, 11 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=301, Invalid=2249, Unknown=0, NotChecked=0, Total=2550 [2024-11-14 03:12:31,380 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 124 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:31,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 386 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 570 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2024-11-14 03:12:31,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-14 03:12:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2024-11-14 03:12:31,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 126 states have (on average 1.1507936507936507) internal successors, (145), 130 states have internal predecessors, (145), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 03:12:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2024-11-14 03:12:31,387 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 80 [2024-11-14 03:12:31,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:31,388 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2024-11-14 03:12:31,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 20 states have internal predecessors, (73), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-14 03:12:31,388 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2024-11-14 03:12:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 03:12:31,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:31,389 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:12:31,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (76)] Ended with exit code 0 [2024-11-14 03:12:31,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-14 03:12:31,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Ended with exit code 0 [2024-11-14 03:12:31,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:12:31,991 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:12:31,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:31,991 INFO L85 PathProgramCache]: Analyzing trace with hash -689862998, now seen corresponding path program 1 times [2024-11-14 03:12:31,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:12:31,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376998971] [2024-11-14 03:12:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:31,992 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 [2024-11-14 03:12:31,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:12:31,993 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:12:31,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2024-11-14 03:12:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:32,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:12:32,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:32,864 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 15 treesize of output 1 [2024-11-14 03:12:33,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:33,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:33,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:12:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-14 03:12:33,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:34,730 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:12:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376998971] [2024-11-14 03:12:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376998971] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [549609582] [2024-11-14 03:12:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:34,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:12:34,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:12:34,732 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:12:34,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (79)] Waiting until timeout for monitored process [2024-11-14 03:12:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:36,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:12:36,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:36,687 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 15 treesize of output 1 [2024-11-14 03:12:36,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:37,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:37,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:12:37,438 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-14 03:12:37,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [549609582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:37,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140875956] [2024-11-14 03:12:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:37,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:37,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:37,699 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:37,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-14 03:12:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:38,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 03:12:38,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:38,463 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 15 treesize of output 1 [2024-11-14 03:12:38,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:39,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2024-11-14 03:12:39,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:12:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-14 03:12:39,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-14 03:12:39,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140875956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:12:39,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:12:39,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 15, 10, 15, 10] total 22 [2024-11-14 03:12:39,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769075578] [2024-11-14 03:12:39,368 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:12:39,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-14 03:12:39,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:12:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-14 03:12:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2024-11-14 03:12:39,369 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-14 03:12:41,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:12:47,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:12:48,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:12:48,329 INFO L93 Difference]: Finished difference Result 148 states and 164 transitions. [2024-11-14 03:12:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-14 03:12:48,329 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 81 [2024-11-14 03:12:48,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:12:48,330 INFO L225 Difference]: With dead ends: 148 [2024-11-14 03:12:48,330 INFO L226 Difference]: Without dead ends: 148 [2024-11-14 03:12:48,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 451 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=313, Invalid=2443, Unknown=0, NotChecked=0, Total=2756 [2024-11-14 03:12:48,331 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 121 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:12:48,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 345 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 725 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2024-11-14 03:12:48,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-14 03:12:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2024-11-14 03:12:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 127 states have (on average 1.141732283464567) internal successors, (145), 131 states have internal predecessors, (145), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 03:12:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2024-11-14 03:12:48,338 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 81 [2024-11-14 03:12:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:12:48,338 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2024-11-14 03:12:48,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 20 states have internal predecessors, (76), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-14 03:12:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2024-11-14 03:12:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 03:12:48,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:12:48,339 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:12:48,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (79)] Ended with exit code 0 [2024-11-14 03:12:48,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Ended with exit code 0 [2024-11-14 03:12:48,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-11-14 03:12:48,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:48,940 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:12:48,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:12:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash 89083643, now seen corresponding path program 1 times [2024-11-14 03:12:48,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:12:48,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196220484] [2024-11-14 03:12:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:48,941 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 [2024-11-14 03:12:48,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:12:48,943 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:12:48,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2024-11-14 03:12:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:49,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-14 03:12:49,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:49,621 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 [2024-11-14 03:12:49,777 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 15 treesize of output 1 [2024-11-14 03:12:49,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:12:50,041 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-14 03:12:50,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-14 03:12:50,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 23 [2024-11-14 03:12:50,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2024-11-14 03:12:51,072 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 28 treesize of output 17 [2024-11-14 03:12:51,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:12:51,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-14 03:12:51,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:12:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-14 03:12:51,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:52,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:12:52,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196220484] [2024-11-14 03:12:52,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196220484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:52,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482754620] [2024-11-14 03:12:52,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:52,622 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:12:52,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:12:52,624 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:12:52,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (82)] Waiting until timeout for monitored process [2024-11-14 03:12:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:54,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-14 03:12:54,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:54,810 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 [2024-11-14 03:12:54,884 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 15 treesize of output 1 [2024-11-14 03:12:54,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:12:55,018 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-14 03:12:55,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-14 03:12:55,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 23 [2024-11-14 03:12:55,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2024-11-14 03:12:55,582 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 28 treesize of output 17 [2024-11-14 03:12:55,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:12:55,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-14 03:12:55,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:12:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 59 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-14 03:12:55,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [482754620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691589458] [2024-11-14 03:12:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:12:56,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:12:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:12:56,059 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:12:56,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-11-14 03:12:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:12:56,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 03:12:56,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:12:56,629 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 [2024-11-14 03:12:56,691 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 15 treesize of output 1 [2024-11-14 03:12:56,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:12:56,834 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-14 03:12:56,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-14 03:12:56,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 23 [2024-11-14 03:12:56,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2024-11-14 03:12:57,409 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 28 treesize of output 17 [2024-11-14 03:12:57,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:12:57,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-14 03:12:57,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:12:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-14 03:12:57,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:12:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691589458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:12:57,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:12:57,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 22] total 23 [2024-11-14 03:12:57,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193283417] [2024-11-14 03:12:57,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:12:57,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 03:12:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:12:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 03:12:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2024-11-14 03:12:57,907 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 21 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:13:01,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:01,266 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2024-11-14 03:13:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 03:13:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 21 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 82 [2024-11-14 03:13:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:01,269 INFO L225 Difference]: With dead ends: 148 [2024-11-14 03:13:01,269 INFO L226 Difference]: Without dead ends: 148 [2024-11-14 03:13:01,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 257 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2024-11-14 03:13:01,270 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 61 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:01,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 441 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-14 03:13:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-14 03:13:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-14 03:13:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 130 states have (on average 1.1384615384615384) internal successors, (148), 134 states have internal predecessors, (148), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 03:13:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 163 transitions. [2024-11-14 03:13:01,274 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 163 transitions. Word has length 82 [2024-11-14 03:13:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:01,274 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 163 transitions. [2024-11-14 03:13:01,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 21 states have internal predecessors, (50), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 03:13:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 163 transitions. [2024-11-14 03:13:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-14 03:13:01,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:01,276 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:13:01,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Ended with exit code 0 [2024-11-14 03:13:01,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (82)] Ended with exit code 0 [2024-11-14 03:13:01,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-11-14 03:13:01,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:13:01,877 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:13:01,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1533374259, now seen corresponding path program 1 times [2024-11-14 03:13:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:13:01,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099066978] [2024-11-14 03:13:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:01,878 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 [2024-11-14 03:13:01,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:13:01,880 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:13:01,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2024-11-14 03:13:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:02,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 03:13:02,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:02,398 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 [2024-11-14 03:13:02,931 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:02,932 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 [2024-11-14 03:13:03,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:13:05,230 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_119| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_119| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_119|) (_ bv0 32))))) is different from true [2024-11-14 03:13:05,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2024-11-14 03:13:07,476 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_120| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_120| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_120|) (_ bv0 32))))) is different from true [2024-11-14 03:13:07,756 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 8 treesize of output 1 [2024-11-14 03:13:07,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2024-11-14 03:13:07,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-14 03:13:08,014 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 16 treesize of output 13 [2024-11-14 03:13:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 145 trivial. 16 not checked. [2024-11-14 03:13:08,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:08,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2024-11-14 03:13:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:13:10,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:13:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099066978] [2024-11-14 03:13:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099066978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1892046091] [2024-11-14 03:13:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:10,051 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:13:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:13:10,053 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:13:10,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (85)] Waiting until timeout for monitored process [2024-11-14 03:13:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:12,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 03:13:12,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:12,338 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 [2024-11-14 03:13:12,768 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:12,768 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 [2024-11-14 03:13:12,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:13:14,893 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_125| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_125| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_125|) (_ bv0 32))))) is different from true [2024-11-14 03:13:15,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2024-11-14 03:13:17,093 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_126| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_126| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_126|) (_ bv0 32))))) is different from true [2024-11-14 03:13:17,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2024-11-14 03:13:17,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-14 03:13:17,421 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 16 treesize of output 13 [2024-11-14 03:13:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 145 trivial. 16 not checked. [2024-11-14 03:13:17,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:17,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-14 03:13:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:13:18,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1892046091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839766660] [2024-11-14 03:13:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:18,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:13:18,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:13:18,394 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:13:18,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-11-14 03:13:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:18,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 03:13:18,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:18,870 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 [2024-11-14 03:13:19,301 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:19,301 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 [2024-11-14 03:13:19,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:13:21,405 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_131| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_131| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_131|) (_ bv0 32))))) is different from true [2024-11-14 03:13:21,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2024-11-14 03:13:23,570 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_132| (_ BitVec 32))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_132| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_132|) (_ bv0 32))))) is different from true [2024-11-14 03:13:23,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2024-11-14 03:13:24,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-14 03:13:24,120 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 16 treesize of output 13 [2024-11-14 03:13:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 145 trivial. 16 not checked. [2024-11-14 03:13:24,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:24,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-14 03:13:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-14 03:13:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839766660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:25,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:13:25,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 18, 15, 19, 16] total 39 [2024-11-14 03:13:25,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008974235] [2024-11-14 03:13:25,181 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:13:25,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-14 03:13:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:13:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-14 03:13:25,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1030, Unknown=6, NotChecked=414, Total=1560 [2024-11-14 03:13:25,183 INFO L87 Difference]: Start difference. First operand 148 states and 163 transitions. Second operand has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 36 states have internal predecessors, (110), 7 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-14 03:13:40,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:13:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:42,427 INFO L93 Difference]: Finished difference Result 157 states and 170 transitions. [2024-11-14 03:13:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-14 03:13:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 36 states have internal predecessors, (110), 7 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 83 [2024-11-14 03:13:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:42,430 INFO L225 Difference]: With dead ends: 157 [2024-11-14 03:13:42,430 INFO L226 Difference]: Without dead ends: 157 [2024-11-14 03:13:42,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 437 SyntacticMatches, 19 SemanticMatches, 66 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=399, Invalid=3399, Unknown=8, NotChecked=750, Total=4556 [2024-11-14 03:13:42,431 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 648 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:42,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 546 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1161 Invalid, 0 Unknown, 648 Unchecked, 5.6s Time] [2024-11-14 03:13:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-14 03:13:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2024-11-14 03:13:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 138 states have internal predecessors, (151), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 03:13:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2024-11-14 03:13:42,436 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 83 [2024-11-14 03:13:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:42,436 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2024-11-14 03:13:42,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 36 states have internal predecessors, (110), 7 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-14 03:13:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2024-11-14 03:13:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 03:13:42,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:42,437 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:13:42,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-11-14 03:13:42,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (85)] Ended with exit code 0 [2024-11-14 03:13:42,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Ended with exit code 0 [2024-11-14 03:13:43,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:13:43,038 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:13:43,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1070574782, now seen corresponding path program 2 times [2024-11-14 03:13:43,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:13:43,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146234115] [2024-11-14 03:13:43,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:13:43,039 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 [2024-11-14 03:13:43,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:13:43,041 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:13:43,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2024-11-14 03:13:43,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:13:43,474 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:13:43,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:13:43,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:13:43,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:13:44,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:13:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146234115] [2024-11-14 03:13:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146234115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [756471027] [2024-11-14 03:13:44,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:13:44,075 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:13:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:13:44,076 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:13:44,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (88)] Waiting until timeout for monitored process [2024-11-14 03:13:44,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:13:44,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:13:44,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:13:44,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:13:45,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:13:45,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [756471027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:45,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451554688] [2024-11-14 03:13:45,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:13:45,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:13:45,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:13:45,291 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:13:45,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-11-14 03:13:45,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:13:45,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:13:45,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:13:45,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:13:45,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-14 03:13:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451554688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:46,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:13:46,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2024-11-14 03:13:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380634615] [2024-11-14 03:13:46,491 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:13:46,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 03:13:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:13:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 03:13:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-14 03:13:46,493 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:13:47,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:47,050 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2024-11-14 03:13:47,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:13:47,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 87 [2024-11-14 03:13:47,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:47,052 INFO L225 Difference]: With dead ends: 144 [2024-11-14 03:13:47,052 INFO L226 Difference]: Without dead ends: 144 [2024-11-14 03:13:47,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-14 03:13:47,052 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 2 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:47,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 432 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:13:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-14 03:13:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-14 03:13:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 125 states have (on average 1.096) internal successors, (137), 130 states have internal predecessors, (137), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-14 03:13:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2024-11-14 03:13:47,058 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 87 [2024-11-14 03:13:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:47,058 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2024-11-14 03:13:47,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:13:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2024-11-14 03:13:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-14 03:13:47,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:47,059 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:13:47,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (88)] Ended with exit code 0 [2024-11-14 03:13:47,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-11-14 03:13:47,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Ended with exit code 0 [2024-11-14 03:13:47,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:13:47,664 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:13:47,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1891203736, now seen corresponding path program 1 times [2024-11-14 03:13:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:13:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71622373] [2024-11-14 03:13:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:47,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:13:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:13:47,666 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:13:47,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2024-11-14 03:13:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:48,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:13:48,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-14 03:13:48,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-14 03:13:49,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:13:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71622373] [2024-11-14 03:13:49,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71622373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:49,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [29044685] [2024-11-14 03:13:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:49,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:13:49,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:13:49,158 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:13:49,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2024-11-14 03:13:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:50,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:13:50,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-14 03:13:50,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-14 03:13:50,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [29044685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:50,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685130533] [2024-11-14 03:13:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:13:50,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:13:50,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:13:50,818 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:13:50,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-11-14 03:13:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:13:51,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:13:51,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-14 03:13:51,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:13:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-14 03:13:51,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685130533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:13:51,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 03:13:51,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2024-11-14 03:13:51,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13307789] [2024-11-14 03:13:51,971 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 03:13:51,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-14 03:13:51,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:13:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-14 03:13:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-14 03:13:51,972 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:13:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:13:52,953 INFO L93 Difference]: Finished difference Result 194 states and 217 transitions. [2024-11-14 03:13:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:13:52,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 89 [2024-11-14 03:13:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:13:52,954 INFO L225 Difference]: With dead ends: 194 [2024-11-14 03:13:52,955 INFO L226 Difference]: Without dead ends: 194 [2024-11-14 03:13:52,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:13:52,955 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 51 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:13:52,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 517 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:13:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-14 03:13:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2024-11-14 03:13:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 152 states have (on average 1.111842105263158) internal successors, (169), 157 states have internal predecessors, (169), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-14 03:13:52,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 199 transitions. [2024-11-14 03:13:52,962 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 199 transitions. Word has length 89 [2024-11-14 03:13:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:13:52,963 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 199 transitions. [2024-11-14 03:13:52,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-14 03:13:52,963 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 199 transitions. [2024-11-14 03:13:52,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-14 03:13:52,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:13:52,964 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:13:52,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (91)] Ended with exit code 0 [2024-11-14 03:13:53,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2024-11-14 03:13:53,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-11-14 03:13:53,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:13:53,565 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:13:53,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:13:53,565 INFO L85 PathProgramCache]: Analyzing trace with hash 800434283, now seen corresponding path program 4 times [2024-11-14 03:13:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:13:53,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039243378] [2024-11-14 03:13:53,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:13:53,566 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 [2024-11-14 03:13:53,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:13:53,568 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:13:53,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2024-11-14 03:13:54,113 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:13:54,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:13:54,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-14 03:13:54,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:13:54,162 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 [2024-11-14 03:13:54,172 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 [2024-11-14 03:13:54,955 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:13:54,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:13:54,984 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 [2024-11-14 03:13:55,013 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:55,014 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 [2024-11-14 03:13:55,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:13:55,307 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 [2024-11-14 03:13:55,327 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:55,327 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 [2024-11-14 03:13:55,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:13:55,606 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 [2024-11-14 03:13:55,629 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:55,629 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 [2024-11-14 03:13:55,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:13:55,914 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 [2024-11-14 03:13:55,940 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:55,940 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 [2024-11-14 03:13:56,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:13:56,242 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 [2024-11-14 03:13:56,263 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:13:56,263 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 [2024-11-14 03:13:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 185 trivial. 10 not checked. [2024-11-14 03:13:56,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:00,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:14:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039243378] [2024-11-14 03:14:00,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039243378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:00,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [31618766] [2024-11-14 03:14:00,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:14:00,968 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:14:00,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:14:00,970 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:14:00,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (94)] Waiting until timeout for monitored process [2024-11-14 03:14:02,266 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:14:02,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:02,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-14 03:14:02,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:02,306 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 [2024-11-14 03:14:02,315 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 [2024-11-14 03:14:02,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:02,887 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 [2024-11-14 03:14:02,904 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:02,904 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 [2024-11-14 03:14:03,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:03,038 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 [2024-11-14 03:14:03,056 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:03,056 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 [2024-11-14 03:14:03,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:03,189 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 [2024-11-14 03:14:03,211 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:03,211 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 [2024-11-14 03:14:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:03,335 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 [2024-11-14 03:14:03,357 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:03,357 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 [2024-11-14 03:14:03,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:03,501 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 [2024-11-14 03:14:03,531 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:03,531 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 [2024-11-14 03:14:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 185 trivial. 10 not checked. [2024-11-14 03:14:03,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [31618766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888194888] [2024-11-14 03:14:03,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-14 03:14:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:03,905 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:03,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-11-14 03:14:04,424 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-14 03:14:04,424 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:04,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-14 03:14:04,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:04,455 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 [2024-11-14 03:14:04,465 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 [2024-11-14 03:14:05,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:05,128 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 [2024-11-14 03:14:05,155 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:05,155 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 [2024-11-14 03:14:05,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:05,312 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 [2024-11-14 03:14:05,337 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:05,338 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 [2024-11-14 03:14:05,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:05,500 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 [2024-11-14 03:14:05,530 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:05,530 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 [2024-11-14 03:14:05,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:05,724 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 [2024-11-14 03:14:05,744 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:05,744 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 [2024-11-14 03:14:05,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:05,920 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 [2024-11-14 03:14:05,947 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:14:05,947 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 [2024-11-14 03:14:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 185 trivial. 10 not checked. [2024-11-14 03:14:05,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:06,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888194888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:06,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:14:06,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 18 [2024-11-14 03:14:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472725231] [2024-11-14 03:14:06,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:06,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 03:14:06,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:14:06,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 03:14:06,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=323, Unknown=2, NotChecked=36, Total=420 [2024-11-14 03:14:06,448 INFO L87 Difference]: Start difference. First operand 176 states and 199 transitions. Second operand has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:14:08,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:08,209 INFO L93 Difference]: Finished difference Result 182 states and 204 transitions. [2024-11-14 03:14:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:14:08,210 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 90 [2024-11-14 03:14:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:08,211 INFO L225 Difference]: With dead ends: 182 [2024-11-14 03:14:08,211 INFO L226 Difference]: Without dead ends: 182 [2024-11-14 03:14:08,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=81, Invalid=521, Unknown=2, NotChecked=46, Total=650 [2024-11-14 03:14:08,211 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 22 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:08,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 453 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 513 Invalid, 0 Unknown, 94 Unchecked, 1.4s Time] [2024-11-14 03:14:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-14 03:14:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2024-11-14 03:14:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 152 states have (on average 1.105263157894737) internal successors, (168), 157 states have internal predecessors, (168), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-14 03:14:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 198 transitions. [2024-11-14 03:14:08,216 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 198 transitions. Word has length 90 [2024-11-14 03:14:08,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:08,217 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 198 transitions. [2024-11-14 03:14:08,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:14:08,217 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 198 transitions. [2024-11-14 03:14:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-14 03:14:08,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:08,218 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:08,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:08,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Ended with exit code 0 [2024-11-14 03:14:08,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (94)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:08,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 03:14:08,819 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:14:08,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1320722411, now seen corresponding path program 2 times [2024-11-14 03:14:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:14:08,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642133112] [2024-11-14 03:14:08,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:14:08,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:14:08,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:14:08,822 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:14:08,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2024-11-14 03:14:09,448 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:14:09,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:09,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-14 03:14:09,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:09,823 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 [2024-11-14 03:14:10,013 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 15 treesize of output 1 [2024-11-14 03:14:10,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:14:10,350 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-14 03:14:10,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-14 03:14:10,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 23 [2024-11-14 03:14:10,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2024-11-14 03:14:11,414 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 28 treesize of output 17 [2024-11-14 03:14:11,452 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:14:11,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-14 03:14:11,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:14:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-14 03:14:11,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:13,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:14:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642133112] [2024-11-14 03:14:13,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642133112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:13,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [988330691] [2024-11-14 03:14:13,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:14:13,053 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:14:13,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:14:13,055 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:14:13,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (97)] Waiting until timeout for monitored process [2024-11-14 03:14:14,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:14:14,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306893005] [2024-11-14 03:14:14,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:14:14,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:14:14,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:14:14,072 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:14:14,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-11-14 03:14:14,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (97)] Ended with exit code 1 [2024-11-14 03:14:14,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:14:14,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:14,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 03:14:14,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:14,796 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 [2024-11-14 03:14:16,265 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 [2024-11-14 03:14:16,608 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 15 treesize of output 1 [2024-11-14 03:14:16,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:14:17,035 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-14 03:14:17,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2024-11-14 03:14:17,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 23 [2024-11-14 03:14:17,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 5 [2024-11-14 03:14:18,305 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 28 treesize of output 17 [2024-11-14 03:14:18,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:14:18,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2024-11-14 03:14:18,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:14:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 98 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-14 03:14:18,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:14:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306893005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:14:19,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:14:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29] total 43 [2024-11-14 03:14:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422629844] [2024-11-14 03:14:19,939 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:14:19,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-14 03:14:19,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:14:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-14 03:14:19,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2768, Unknown=0, NotChecked=0, Total=2970 [2024-11-14 03:14:19,941 INFO L87 Difference]: Start difference. First operand 176 states and 198 transitions. Second operand has 44 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 38 states have internal predecessors, (91), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:14:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:14:25,767 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2024-11-14 03:14:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 03:14:25,768 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 38 states have internal predecessors, (91), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 92 [2024-11-14 03:14:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:14:25,769 INFO L225 Difference]: With dead ends: 195 [2024-11-14 03:14:25,769 INFO L226 Difference]: Without dead ends: 195 [2024-11-14 03:14:25,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=355, Invalid=5195, Unknown=0, NotChecked=0, Total=5550 [2024-11-14 03:14:25,771 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 78 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:14:25,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 922 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1692 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-14 03:14:25,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-14 03:14:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-14 03:14:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 170 states have (on average 1.1) internal successors, (187), 174 states have internal predecessors, (187), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-14 03:14:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 217 transitions. [2024-11-14 03:14:25,778 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 217 transitions. Word has length 92 [2024-11-14 03:14:25,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:14:25,778 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 217 transitions. [2024-11-14 03:14:25,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 38 states have internal predecessors, (91), 9 states have call successors, (9), 3 states have call predecessors, (9), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:14:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 217 transitions. [2024-11-14 03:14:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-14 03:14:25,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:14:25,780 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:14:25,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2024-11-14 03:14:25,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Ended with exit code 0 [2024-11-14 03:14:26,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:14:26,181 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-14 03:14:26,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:14:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1918958088, now seen corresponding path program 2 times [2024-11-14 03:14:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:14:26,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514523900] [2024-11-14 03:14:26,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:14:26,182 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 [2024-11-14 03:14:26,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:14:26,183 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 03:14:26,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2024-11-14 03:14:26,803 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:14:26,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:14:26,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-14 03:14:26,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:14:27,816 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 15 treesize of output 1 [2024-11-14 03:14:28,083 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:14:28,083 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 37 treesize of output 29 [2024-11-14 03:14:29,160 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_17_~array#1.base|) |c_ULTIMATE.start_alloc_17_~array#1.offset|))) (and (= |c_ULTIMATE.start_alloc_17_~array#1.offset| |c_ULTIMATE.start_entry_point_~array~0#1.offset|) (let ((.cse4 (select |c_#valid| .cse3)) (.cse9 (select |c_#valid| |c_ULTIMATE.start_alloc_17_~p~0#1.base|)) (.cse11 (= .cse3 |c_ULTIMATE.start_alloc_17_~p~0#1.base|))) (let ((.cse6 (and (exists ((v_DerPreprocessor_24 (_ BitVec 1)) (v_DerPreprocessor_25 (_ BitVec 1))) (let ((.cse12 (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| v_DerPreprocessor_24) .cse3 v_DerPreprocessor_25))) (and (= (_ bv0 1) (bvadd v_DerPreprocessor_24 (select .cse12 |c_ULTIMATE.start_entry_point_~array~0#1.base|))) (= (_ bv0 1) (select .cse12 |c_ULTIMATE.start_alloc_17_~p~0#1.base|))))) (= (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_alloc_17_~p~0#1.base| .cse9) |c_#valid|) .cse11)) (.cse5 (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| .cse3 .cse4) |c_ULTIMATE.start_alloc_17_~p~0#1.base| .cse9))) (.cse1 (not .cse11)) (.cse7 (= |c_ULTIMATE.start_entry_point_~array~0#1.base| |c_ULTIMATE.start_alloc_17_~p~0#1.base|)) (.cse0 (= .cse3 |c_ULTIMATE.start_entry_point_~array~0#1.base|))) (or (and .cse0 (or (and .cse1 (exists ((v_DerPreprocessor_24 (_ BitVec 1))) (let ((.cse2 (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| v_DerPreprocessor_24) .cse3 .cse4))) (and (= (_ bv0 1) (bvadd (select .cse2 |c_ULTIMATE.start_entry_point_~array~0#1.base|) v_DerPreprocessor_24)) (= (_ bv0 1) (select .cse2 |c_ULTIMATE.start_alloc_17_~p~0#1.base|))))) .cse5) .cse6)) (and .cse7 (or .cse6 (and (exists ((v_DerPreprocessor_24 (_ BitVec 1))) (= (_ bv0 1) (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| v_DerPreprocessor_24) .cse3 .cse4) |c_ULTIMATE.start_alloc_17_~p~0#1.base|))) .cse1 .cse5))) (and (let ((.cse8 (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base| (select |c_#valid| |c_ULTIMATE.start_entry_point_~array~0#1.base|)))) (or (and (= (store .cse8 |c_ULTIMATE.start_alloc_17_~p~0#1.base| .cse9) |c_#valid|) (exists ((v_DerPreprocessor_25 (_ BitVec 1))) (= (_ bv0 1) (select (store .cse8 .cse3 v_DerPreprocessor_25) |c_ULTIMATE.start_alloc_17_~p~0#1.base|)))) (let ((.cse10 (store .cse8 .cse3 .cse4))) (and (= (_ bv0 1) (select .cse10 |c_ULTIMATE.start_alloc_17_~p~0#1.base|)) (= |c_#valid| (store .cse10 |c_ULTIMATE.start_alloc_17_~p~0#1.base| .cse9)) .cse1)))) (not .cse7) (not .cse0))))) (= |c_ULTIMATE.start_alloc_17_~i~0#1| (_ bv1 32)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_entry_point_~array~0#1.base|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| .cse3)))) is different from true [2024-11-14 03:14:29,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:29,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 518 treesize of output 398 [2024-11-14 03:14:31,782 INFO L349 Elim1Store]: treesize reduction 493, result has 16.9 percent of original size [2024-11-14 03:14:31,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 1385 treesize of output 1547 [2024-11-14 03:14:33,744 INFO L349 Elim1Store]: treesize reduction 128, result has 28.1 percent of original size [2024-11-14 03:14:33,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 1189 treesize of output 1065 [2024-11-14 03:14:39,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:14:39,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 5010 treesize of output 4386 [2024-11-14 03:14:48,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:14:48,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:14:48,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 604 treesize of output 294 [2024-11-14 03:14:52,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 406 treesize of output 262 [2024-11-14 03:15:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 135 trivial. 3 not checked. [2024-11-14 03:15:08,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:15:10,993 INFO L349 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2024-11-14 03:15:10,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 163 treesize of output 134 [2024-11-14 03:15:42,407 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:15:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514523900] [2024-11-14 03:15:42,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514523900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:15:42,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [414911220] [2024-11-14 03:15:42,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:15:42,408 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 03:15:42,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 03:15:42,413 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 03:15:42,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (100)] Waiting until timeout for monitored process [2024-11-14 03:15:44,741 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:15:44,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:15:44,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 03:15:44,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:15:53,914 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 15 treesize of output 1 [2024-11-14 03:15:54,626 INFO L349 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2024-11-14 03:15:54,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2024-11-14 03:15:55,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:15:55,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 83 treesize of output 59 [2024-11-14 03:15:56,768 INFO L349 Elim1Store]: treesize reduction 285, result has 13.9 percent of original size [2024-11-14 03:15:56,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 93 treesize of output 90 [2024-11-14 03:15:56,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:15:56,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 58 [2024-11-14 03:15:59,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:15:59,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:15:59,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 39 [2024-11-14 03:16:00,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2024-11-14 03:16:07,854 WARN L873 $PredicateComparison]: unable to prove that (and (= (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)) (_ bv0 1)) (exists ((v_arrayElimCell_312 (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_#t~mem44#1.base_151| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_91| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_91| (_ bv1 1)))) (and (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_312 (_ bv0 1)) |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_151| (_ bv0 1)) |v_ULTIMATE.start_entry_point_~array~0#1.base_91| (_ bv0 1))) (= (_ bv0 1) (select (store .cse0 |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_151| (_ bv1 1)) v_arrayElimCell_312)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_entry_point_~array~0#1.base_91|)) (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_alloc_17_#t~mem44#1.base_151|)))))) is different from true [2024-11-14 03:16:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-14 03:16:07,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:16:08,739 INFO L349 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2024-11-14 03:16:08,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 163 treesize of output 134 [2024-11-14 03:16:43,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [414911220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:16:43,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637049642] [2024-11-14 03:16:43,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 03:16:43,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:16:43,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:16:43,462 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:16:43,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a84d6fc-e9af-49d0-bfe9-c787a92dc392/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-11-14 03:16:43,986 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 03:16:43,986 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:16:43,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-14 03:16:43,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:16:50,309 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 15 treesize of output 1 [2024-11-14 03:16:51,132 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:16:51,132 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 23 treesize of output 15 [2024-11-14 03:17:03,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:17:03,849 INFO L349 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2024-11-14 03:17:03,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 80 [2024-11-14 03:17:05,062 INFO L349 Elim1Store]: treesize reduction 166, result has 10.3 percent of original size [2024-11-14 03:17:05,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 88 treesize of output 60 [2024-11-14 03:17:05,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-14 03:17:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:17:08,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 39 [2024-11-14 03:17:09,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2024-11-14 03:17:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-14 03:17:51,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:18:00,826 INFO L349 Elim1Store]: treesize reduction 78, result has 29.1 percent of original size [2024-11-14 03:18:00,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 163 treesize of output 134 [2024-11-14 03:19:11,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637049642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:19:11,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:19:11,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 28] total 72 [2024-11-14 03:19:11,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697628171] [2024-11-14 03:19:11,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:19:11,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-14 03:19:11,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:19:11,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-14 03:19:11,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=8783, Unknown=86, NotChecked=386, Total=9900 [2024-11-14 03:19:11,057 INFO L87 Difference]: Start difference. First operand 195 states and 217 transitions. Second operand has 73 states, 70 states have (on average 2.2142857142857144) internal successors, (155), 64 states have internal predecessors, (155), 11 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-14 03:19:13,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:15,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:19,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:22,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:26,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:28,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:30,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:37,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:39,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:48,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:50,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:53,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:55,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:57,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:19:59,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:01,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:03,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:05,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:07,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:09,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:11,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:13,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:15,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:17,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:19,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:28,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:30,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:32,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:34,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:20:38,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:21:08,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]