./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:49:22,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:49:22,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 05:49:22,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:49:22,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:49:22,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:49:22,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:49:22,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:49:22,410 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:49:22,410 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:49:22,410 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:49:22,410 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:49:22,411 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:49:22,411 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:49:22,411 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:49:22,411 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:49:22,411 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:49:22,411 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:49:22,411 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:49:22,411 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:49:22,412 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:49:22,412 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:49:22,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:49:22,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:49:22,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:49:22,413 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:49:22,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:49:22,413 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:49:22,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:49:22,414 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:49:22,414 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:49:22,414 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:49:22,414 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:49:22,414 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:49:22,415 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:49:22,415 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:49:22,415 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:49:22,415 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:49:22,415 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:49:22,416 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:49:22,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:49:22,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:49:22,416 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:49:22,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:49:22,416 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:49:22,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:49:22,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:49:22,417 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:49:22,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:49:22,418 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_03670f5c-b903-4f43-825f-4c5645788c8c/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 -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2024-11-14 05:49:22,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:49:22,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:49:22,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:49:22,813 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:49:22,814 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:49:22,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i Unable to find full path for "g++" [2024-11-14 05:49:25,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:49:25,532 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:49:25,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2024-11-14 05:49:25,550 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data/8ab9071d1/547872b105474379b70d3b369741ceb2/FLAG54555ba16 [2024-11-14 05:49:25,567 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data/8ab9071d1/547872b105474379b70d3b369741ceb2 [2024-11-14 05:49:25,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:49:25,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:49:25,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:49:25,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:49:25,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:49:25,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:49:25" (1/1) ... [2024-11-14 05:49:25,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c137917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:25, skipping insertion in model container [2024-11-14 05:49:25,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:49:25" (1/1) ... [2024-11-14 05:49:25,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:49:26,030 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 05:49:26,096 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 05:49:26,102 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 05:49:26,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:49:26,142 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 05:49:26,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a25d0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:26, skipping insertion in model container [2024-11-14 05:49:26,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:49:26,145 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 05:49:26,147 INFO L158 Benchmark]: Toolchain (without parser) took 574.57ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 78.1MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:49:26,148 INFO L158 Benchmark]: CDTParser took 1.37ms. Allocated memory is still 167.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 05:49:26,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.22ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 78.1MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 05:49:26,150 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37ms. Allocated memory is still 167.8MB. Free memory is still 103.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.22ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 78.1MB in the end (delta: 14.1MB). 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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:49:29,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:49:29,371 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 05:49:29,378 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:49:29,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:49:29,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:49:29,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:49:29,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:49:29,408 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:49:29,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:49:29,409 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:49:29,409 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:49:29,409 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:49:29,409 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:49:29,409 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:49:29,410 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:49:29,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 05:49:29,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 05:49:29,411 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:49:29,411 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:49:29,411 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:49:29,411 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:49:29,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:49:29,412 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 05:49:29,412 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 05:49:29,412 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 05:49:29,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:49:29,412 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 05:49:29,412 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 05:49:29,413 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:49:29,413 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 05:49:29,413 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 05:49:29,413 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:49:29,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:49:29,414 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:49:29,414 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 05:49:29,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:49:29,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:49:29,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:49:29,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:49:29,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:49:29,415 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 05:49:29,415 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 05:49:29,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:49:29,415 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:49:29,416 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_03670f5c-b903-4f43-825f-4c5645788c8c/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 -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2024-11-14 05:49:29,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:49:29,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:49:29,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:49:29,781 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:49:29,782 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:49:29,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i Unable to find full path for "g++" [2024-11-14 05:49:31,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:49:32,334 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:49:32,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2024-11-14 05:49:32,365 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data/20f3d7a4f/d475904cc2d84f3cb1d48b738c43c727/FLAG6bfc687ef [2024-11-14 05:49:32,398 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/data/20f3d7a4f/d475904cc2d84f3cb1d48b738c43c727 [2024-11-14 05:49:32,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:49:32,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:49:32,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:49:32,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:49:32,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:49:32,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:49:32" (1/1) ... [2024-11-14 05:49:32,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0eedd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:32, skipping insertion in model container [2024-11-14 05:49:32,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:49:32" (1/1) ... [2024-11-14 05:49:32,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:49:32,987 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 05:49:33,098 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 05:49:33,110 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 05:49:33,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:49:33,139 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 05:49:33,161 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:49:33,209 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 05:49:33,234 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 05:49:33,239 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 05:49:33,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:49:33,250 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:49:33,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:49:33,422 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:49:33,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33 WrapperNode [2024-11-14 05:49:33,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:49:33,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:49:33,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:49:33,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:49:33,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,481 INFO L138 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 80 [2024-11-14 05:49:33,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:49:33,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:49:33,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:49:33,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:49:33,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:49:33,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:49:33,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:49:33,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:49:33,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (1/1) ... [2024-11-14 05:49:33,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:49:33,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:33,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:49:33,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:49:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 05:49:33,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 05:49:33,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 05:49:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:49:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 05:49:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 05:49:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 05:49:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 05:49:33,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:49:33,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:49:33,839 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:49:33,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:49:34,324 INFO L? ?]: Removed 55 outVars from TransFormulas that were not future-live. [2024-11-14 05:49:34,324 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:49:34,340 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:49:34,340 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-14 05:49:34,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:49:34 BoogieIcfgContainer [2024-11-14 05:49:34,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:49:34,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:49:34,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:49:34,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:49:34,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:49:32" (1/3) ... [2024-11-14 05:49:34,355 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400ae075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:49:34, skipping insertion in model container [2024-11-14 05:49:34,355 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:49:33" (2/3) ... [2024-11-14 05:49:34,356 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@400ae075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:49:34, skipping insertion in model container [2024-11-14 05:49:34,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:49:34" (3/3) ... [2024-11-14 05:49:34,358 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-1.i [2024-11-14 05:49:34,377 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:49:34,379 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test17_1-1.i that has 2 procedures, 57 locations, 1 initial locations, 4 loop locations, and 17 error locations. [2024-11-14 05:49:34,458 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:49:34,479 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;@bc83cda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:49:34,480 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-14 05:49:34,488 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 53 states have internal predecessors, (64), 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 05:49:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:49:34,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:34,498 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:34,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:34,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash 510623583, now seen corresponding path program 1 times [2024-11-14 05:49:34,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:34,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699388661] [2024-11-14 05:49:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:34,523 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 05:49:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:34,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:34,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:34,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:49:34,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:34,789 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 05:49:34,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:34,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:34,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699388661] [2024-11-14 05:49:34,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699388661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:34,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:34,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:49:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722727248] [2024-11-14 05:49:34,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:34,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:49:34,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:34,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:49:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:49:34,829 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 53 states have internal predecessors, (64), 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 05:49:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:34,961 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2024-11-14 05:49:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:49:34,968 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 05:49:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:34,978 INFO L225 Difference]: With dead ends: 91 [2024-11-14 05:49:34,979 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 05:49:34,982 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 05:49:34,989 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 33 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:34,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 296 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:49:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 05:49:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59. [2024-11-14 05:49:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.605263157894737) internal successors, (61), 54 states have internal predecessors, (61), 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 05:49:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-11-14 05:49:35,057 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 11 [2024-11-14 05:49:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:35,059 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-11-14 05:49:35,059 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 05:49:35,060 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-11-14 05:49:35,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:49:35,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:35,062 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:35,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Ended with exit code 0 [2024-11-14 05:49:35,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:35,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:35,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:35,266 INFO L85 PathProgramCache]: Analyzing trace with hash 510622849, now seen corresponding path program 1 times [2024-11-14 05:49:35,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497682424] [2024-11-14 05:49:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:35,267 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 05:49:35,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:35,270 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:35,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:35,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:49:35,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:35,403 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 05:49:35,501 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 05:49:35,501 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:35,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:35,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497682424] [2024-11-14 05:49:35,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497682424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:35,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:35,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:49:35,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127734035] [2024-11-14 05:49:35,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:35,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:49:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:49:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:49:35,507 INFO L87 Difference]: Start difference. First operand 59 states and 67 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 05:49:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:35,747 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2024-11-14 05:49:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:49:35,748 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 05:49:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:35,749 INFO L225 Difference]: With dead ends: 66 [2024-11-14 05:49:35,749 INFO L226 Difference]: Without dead ends: 66 [2024-11-14 05:49:35,750 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 05:49:35,751 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:35,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:49:35,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-14 05:49:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 61. [2024-11-14 05:49:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 40 states have (on average 1.625) internal successors, (65), 56 states have internal predecessors, (65), 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 05:49:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-14 05:49:35,759 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 11 [2024-11-14 05:49:35,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:35,759 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-14 05:49:35,759 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 05:49:35,760 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-14 05:49:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:49:35,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:35,760 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:35,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:35,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:35,961 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:35,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash 510622850, now seen corresponding path program 1 times [2024-11-14 05:49:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114126145] [2024-11-14 05:49:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:35,962 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 05:49:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:35,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:35,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:36,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:49:36,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:36,101 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 05:49:36,332 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 05:49:36,333 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:36,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:36,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114126145] [2024-11-14 05:49:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114126145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:36,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:36,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 05:49:36,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975401349] [2024-11-14 05:49:36,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:36,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:49:36,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:36,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:49:36,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:49:36,338 INFO L87 Difference]: Start difference. First operand 61 states and 71 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 05:49:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:36,827 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2024-11-14 05:49:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 05:49:36,828 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 05:49:36,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:36,830 INFO L225 Difference]: With dead ends: 73 [2024-11-14 05:49:36,830 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 05:49:36,830 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 05:49:36,831 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 55 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:36,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 252 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:49:36,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 05:49:36,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2024-11-14 05:49:36,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 58 states have internal predecessors, (67), 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 05:49:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-14 05:49:36,845 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 11 [2024-11-14 05:49:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:36,846 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-14 05:49:36,846 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 05:49:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-14 05:49:36,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:49:36,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:36,847 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:36,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:37,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1398127264, now seen corresponding path program 1 times [2024-11-14 05:49:37,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:37,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289307725] [2024-11-14 05:49:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:37,054 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 05:49:37,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:37,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:37,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:49:37,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:37,158 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 05:49:37,158 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:37,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289307725] [2024-11-14 05:49:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289307725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:37,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:37,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:49:37,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287991475] [2024-11-14 05:49:37,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:37,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:49:37,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:49:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:49:37,161 INFO L87 Difference]: Start difference. First operand 63 states and 73 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 05:49:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:37,331 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2024-11-14 05:49:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:49:37,332 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 05:49:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:37,333 INFO L225 Difference]: With dead ends: 103 [2024-11-14 05:49:37,333 INFO L226 Difference]: Without dead ends: 100 [2024-11-14 05:49:37,334 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 05:49:37,334 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 42 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:37,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 177 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:49:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-14 05:49:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2024-11-14 05:49:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.543859649122807) internal successors, (88), 73 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-14 05:49:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2024-11-14 05:49:37,344 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 11 [2024-11-14 05:49:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:37,344 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2024-11-14 05:49:37,345 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 05:49:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2024-11-14 05:49:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 05:49:37,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:37,345 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:37,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,548 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:37,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1398126530, now seen corresponding path program 1 times [2024-11-14 05:49:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:37,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185408147] [2024-11-14 05:49:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:37,550 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 05:49:37,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:37,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:37,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:49:37,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:37,695 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 05:49:37,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:37,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185408147] [2024-11-14 05:49:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185408147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:37,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:49:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:49:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356973390] [2024-11-14 05:49:37,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:37,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:49:37,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:49:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:49:37,699 INFO L87 Difference]: Start difference. First operand 79 states and 97 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 05:49:37,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:37,750 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2024-11-14 05:49:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:49:37,754 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 05:49:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:37,755 INFO L225 Difference]: With dead ends: 60 [2024-11-14 05:49:37,755 INFO L226 Difference]: Without dead ends: 58 [2024-11-14 05:49:37,755 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 05:49:37,756 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:37,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:49:37,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-14 05:49:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-14 05:49:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 54 states have internal predecessors, (59), 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 05:49:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2024-11-14 05:49:37,770 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 11 [2024-11-14 05:49:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:37,770 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2024-11-14 05:49:37,770 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 05:49:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2024-11-14 05:49:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-14 05:49:37,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:37,771 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:37,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,972 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:37,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:37,973 INFO L85 PathProgramCache]: Analyzing trace with hash -808870978, now seen corresponding path program 1 times [2024-11-14 05:49:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43104315] [2024-11-14 05:49:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:37,973 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 05:49:37,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:37,975 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:37,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:38,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:49:38,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:38,088 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 05:49:38,376 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 05:49:38,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:39,302 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 05:49:39,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:39,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43104315] [2024-11-14 05:49:39,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43104315] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:39,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1255189350] [2024-11-14 05:49:39,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:39,303 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:49:39,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:49:39,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:49:39,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-14 05:49:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:39,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:49:39,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:39,476 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 05:49:39,586 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 05:49:39,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:40,001 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 05:49:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1255189350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:40,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950422912] [2024-11-14 05:49:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:40,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:40,007 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:40,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-14 05:49:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:40,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 05:49:40,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:40,120 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 05:49:40,243 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 05:49:40,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:40,645 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 05:49:40,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950422912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:40,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:49:40,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 05:49:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329720832] [2024-11-14 05:49:40,646 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:49:40,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 05:49:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:40,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 05:49:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:49:40,648 INFO L87 Difference]: Start difference. First operand 58 states and 64 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 05:49:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:42,043 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2024-11-14 05:49:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 05:49:42,044 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 05:49:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:42,046 INFO L225 Difference]: With dead ends: 73 [2024-11-14 05:49:42,046 INFO L226 Difference]: Without dead ends: 73 [2024-11-14 05:49:42,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-14 05:49:42,047 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 143 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:42,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 419 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:49:42,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-14 05:49:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2024-11-14 05:49:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.4893617021276595) 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 05:49:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2024-11-14 05:49:42,060 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 14 [2024-11-14 05:49:42,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:42,061 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2024-11-14 05:49:42,061 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 05:49:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2024-11-14 05:49:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:49:42,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:42,062 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 05:49:42,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:42,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-14 05:49:42,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-14 05:49:42,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:42,663 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:42,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:42,664 INFO L85 PathProgramCache]: Analyzing trace with hash -890493061, now seen corresponding path program 1 times [2024-11-14 05:49:42,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:42,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818839762] [2024-11-14 05:49:42,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:42,664 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 05:49:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:42,666 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:42,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:42,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:49:42,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:42,869 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 05:49:42,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:43,004 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 05:49:43,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818839762] [2024-11-14 05:49:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818839762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:43,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [960503699] [2024-11-14 05:49:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:43,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:49:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:49:43,011 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:49:43,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-14 05:49:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:43,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:49:43,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:43,253 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 05:49:43,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:43,307 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 05:49:43,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [960503699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254922570] [2024-11-14 05:49:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:43,310 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:43,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-14 05:49:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:43,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 05:49:43,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:43,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 05:49:43,564 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 05:49:43,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:43,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254922570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:43,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 05:49:43,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6, 6, 6] total 14 [2024-11-14 05:49:43,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444437805] [2024-11-14 05:49:43,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:43,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:49:43,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:43,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:49:43,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:49:43,567 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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 05:49:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:43,791 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2024-11-14 05:49:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:49:43,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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 05:49:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:43,793 INFO L225 Difference]: With dead ends: 74 [2024-11-14 05:49:43,793 INFO L226 Difference]: Without dead ends: 74 [2024-11-14 05:49:43,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:49:43,794 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:43,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 175 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:49:43,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-14 05:49:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2024-11-14 05:49:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.5) internal successors, (78), 68 states have internal predecessors, (78), 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 05:49:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2024-11-14 05:49:43,805 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 22 [2024-11-14 05:49:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:43,806 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2024-11-14 05:49:43,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 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 05:49:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2024-11-14 05:49:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-14 05:49:43,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:43,807 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 05:49:43,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:44,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-14 05:49:44,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-14 05:49:44,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:44,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:44,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:44,409 INFO L85 PathProgramCache]: Analyzing trace with hash -890493060, now seen corresponding path program 1 times [2024-11-14 05:49:44,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:44,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536276539] [2024-11-14 05:49:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:44,409 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 05:49:44,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:44,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:44,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (13)] Waiting until timeout for monitored process [2024-11-14 05:49:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:44,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:49:44,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:44,609 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 05:49:44,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:44,741 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 05:49:44,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536276539] [2024-11-14 05:49:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536276539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1865562318] [2024-11-14 05:49:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:44,741 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:49:44,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:49:44,745 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:49:44,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-14 05:49:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:44,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:49:44,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:44,992 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 05:49:44,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:45,042 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 05:49:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1865562318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:45,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167753913] [2024-11-14 05:49:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:49:45,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:45,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:45,046 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:45,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-14 05:49:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:49:45,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:49:45,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:45,234 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 05:49:45,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:49:45,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167753913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:49:45,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2024-11-14 05:49:45,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6, 6, 6] total 11 [2024-11-14 05:49:45,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922755857] [2024-11-14 05:49:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:49:45,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:49:45,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:45,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:49:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-14 05:49:45,238 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand has 4 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 05:49:45,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:49:45,321 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2024-11-14 05:49:45,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:49:45,322 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 05:49:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:49:45,323 INFO L225 Difference]: With dead ends: 75 [2024-11-14 05:49:45,323 INFO L226 Difference]: Without dead ends: 75 [2024-11-14 05:49:45,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:49:45,324 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 44 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:49:45,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 121 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:49:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-14 05:49:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2024-11-14 05:49:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 64 states have internal predecessors, (71), 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 05:49:45,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2024-11-14 05:49:45,330 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 22 [2024-11-14 05:49:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:49:45,331 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2024-11-14 05:49:45,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 05:49:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2024-11-14 05:49:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-14 05:49:45,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:49:45,332 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:49:45,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (13)] Ended with exit code 0 [2024-11-14 05:49:45,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-14 05:49:45,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-14 05:49:45,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:45,933 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:49:45,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:49:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash -584160894, now seen corresponding path program 2 times [2024-11-14 05:49:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:49:45,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380348063] [2024-11-14 05:49:45,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:49:45,934 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 05:49:45,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:49:45,936 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:49:45,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (16)] Waiting until timeout for monitored process [2024-11-14 05:49:46,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:49:46,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:49:46,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:49:46,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:46,070 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 5 [2024-11-14 05:49:46,582 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 05:49:46,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:48,380 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 05:49:48,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:49:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380348063] [2024-11-14 05:49:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380348063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2009243881] [2024-11-14 05:49:48,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:49:48,381 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:49:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:49:48,387 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:49:48,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-14 05:49:48,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:49:48,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:49:48,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 05:49:48,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:48,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 05:49:49,152 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 05:49:49,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:54,817 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 05:49:54,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2009243881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:54,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079924510] [2024-11-14 05:49:54,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-14 05:49:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:49:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:49:54,819 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:49:54,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 05:49:54,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-14 05:49:54,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:49:54,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:49:54,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:49:54,964 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 05:49:55,151 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 05:49:55,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:49:58,031 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 05:49:58,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079924510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:49:58,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:49:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11, 11, 11, 12] total 47 [2024-11-14 05:49:58,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721652436] [2024-11-14 05:49:58,032 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:49:58,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-14 05:49:58,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:49:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-14 05:49:58,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1903, Unknown=2, NotChecked=0, Total=2256 [2024-11-14 05:49:58,035 INFO L87 Difference]: Start difference. First operand 68 states and 76 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 05:50:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:02,497 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2024-11-14 05:50:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:50:02,498 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 05:50:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:02,499 INFO L225 Difference]: With dead ends: 89 [2024-11-14 05:50:02,500 INFO L226 Difference]: Without dead ends: 89 [2024-11-14 05:50:02,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=496, Invalid=2472, Unknown=2, NotChecked=0, Total=2970 [2024-11-14 05:50:02,502 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 153 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:02,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1128 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-14 05:50:02,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-14 05:50:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2024-11-14 05:50:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 66 states have (on average 1.393939393939394) internal successors, (92), 82 states have internal predecessors, (92), 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 05:50:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2024-11-14 05:50:02,510 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 23 [2024-11-14 05:50:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:02,511 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2024-11-14 05:50:02,511 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 05:50:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2024-11-14 05:50:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-14 05:50:02,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:02,512 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 05:50:02,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 05:50:02,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (16)] Ended with exit code 0 [2024-11-14 05:50:02,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-14 05:50:03,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:50:03,117 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:50:03,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1725226996, now seen corresponding path program 1 times [2024-11-14 05:50:03,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:50:03,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198941550] [2024-11-14 05:50:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:03,118 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 05:50:03,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:50:03,121 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:50:03,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Waiting until timeout for monitored process [2024-11-14 05:50:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:03,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:50:03,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:03,402 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 05:50:03,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:03,667 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 05:50:03,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:50:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198941550] [2024-11-14 05:50:03,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198941550] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [921026720] [2024-11-14 05:50:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:03,667 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:50:03,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:50:03,669 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:50:03,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-14 05:50:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:03,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 05:50:03,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:03,960 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 05:50:03,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:04,043 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 05:50:04,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [921026720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:04,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788075822] [2024-11-14 05:50:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:50:04,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:04,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:04,046 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:04,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-14 05:50:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:50:04,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:50:04,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:04,190 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 05:50:04,529 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 05:50:04,530 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 05:50:04,548 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 05:50:04,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:10,960 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 05:50:10,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788075822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:10,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:50:10,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 7, 7] total 24 [2024-11-14 05:50:10,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639962376] [2024-11-14 05:50:10,961 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:10,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 05:50:10,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:50:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 05:50:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=448, Unknown=6, NotChecked=0, Total=552 [2024-11-14 05:50:10,963 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 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 05:50:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:50:12,434 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2024-11-14 05:50:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 05:50:12,435 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 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 05:50:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:50:12,436 INFO L225 Difference]: With dead ends: 95 [2024-11-14 05:50:12,436 INFO L226 Difference]: Without dead ends: 95 [2024-11-14 05:50:12,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=268, Invalid=1208, Unknown=6, NotChecked=0, Total=1482 [2024-11-14 05:50:12,437 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 116 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:50:12,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 486 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:50:12,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-14 05:50:12,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2024-11-14 05:50:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 80 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 05:50:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2024-11-14 05:50:12,444 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 35 [2024-11-14 05:50:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:50:12,445 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2024-11-14 05:50:12,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9166666666666665) internal successors, (70), 23 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 05:50:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2024-11-14 05:50:12,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:50:12,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:50:12,446 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:50:12,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-14 05:50:12,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Forceful destruction successful, exit code 0 [2024-11-14 05:50:12,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2024-11-14 05:50:13,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:50:13,047 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:50:13,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:50:13,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1530477826, now seen corresponding path program 3 times [2024-11-14 05:50:13,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:50:13,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431031371] [2024-11-14 05:50:13,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:50:13,048 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 05:50:13,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:50:13,051 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:50:13,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (22)] Waiting until timeout for monitored process [2024-11-14 05:50:13,310 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 05:50:13,310 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:13,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:50:13,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:13,348 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 05:50:14,434 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 05:50:14,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:20,125 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 05:50:20,126 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:50:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431031371] [2024-11-14 05:50:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431031371] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1727272321] [2024-11-14 05:50:20,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:50:20,126 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:50:20,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:50:20,131 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:50:20,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-14 05:50:20,600 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 05:50:20,601 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:20,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 05:50:20,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:20,623 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 05:50:21,174 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 05:50:21,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:28,095 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 05:50:28,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1727272321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:28,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836184647] [2024-11-14 05:50:28,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 05:50:28,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:50:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:50:28,098 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:50:28,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-14 05:50:36,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-14 05:50:36,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 05:50:36,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 05:50:36,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:50:36,989 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 05:50:37,563 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 05:50:37,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:50:58,440 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 05:50:58,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836184647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:50:58,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:50:58,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18, 20, 19, 23] total 68 [2024-11-14 05:50:58,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966182792] [2024-11-14 05:50:58,441 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:50:58,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-14 05:50:58,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:50:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-14 05:50:58,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=3865, Unknown=0, NotChecked=0, Total=4556 [2024-11-14 05:50:58,445 INFO L87 Difference]: Start difference. First operand 84 states and 90 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 05:51:06,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:06,023 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-11-14 05:51:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 05:51:06,024 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 05:51:06,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:06,024 INFO L225 Difference]: With dead ends: 85 [2024-11-14 05:51:06,025 INFO L226 Difference]: Without dead ends: 85 [2024-11-14 05:51:06,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=707, Invalid=4123, Unknown=0, NotChecked=0, Total=4830 [2024-11-14 05:51:06,027 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 99 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:06,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1061 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-14 05:51:06,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-14 05:51:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2024-11-14 05:51:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 78 states have internal predecessors, (82), 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 05:51:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2024-11-14 05:51:06,033 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 41 [2024-11-14 05:51:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:06,034 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2024-11-14 05:51:06,034 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 05:51:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2024-11-14 05:51:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:51:06,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:06,036 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 05:51:06,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-14 05:51:06,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-14 05:51:06,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (22)] Forceful destruction successful, exit code 0 [2024-11-14 05:51:06,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:06,637 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:51:06,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1350615479, now seen corresponding path program 1 times [2024-11-14 05:51:06,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:06,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382793364] [2024-11-14 05:51:06,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:06,638 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 05:51:06,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:06,640 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:06,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (25)] Waiting until timeout for monitored process [2024-11-14 05:51:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:06,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:51:06,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:06,848 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 05:51:06,857 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 05:51:07,386 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 05:51:07,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:51:07,414 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 14 treesize of output 9 [2024-11-14 05:51:07,431 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:51:07,432 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 05:51:07,485 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 05:51:07,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:07,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:51:07,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382793364] [2024-11-14 05:51:07,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382793364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1549972534] [2024-11-14 05:51:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:51:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:51:07,861 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:51:07,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-14 05:51:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:08,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:51:08,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:08,343 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 05:51:08,353 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 05:51:08,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:51:08,871 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 05:51:08,885 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:51:08,885 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 05:51:08,912 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 05:51:08,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:11,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1549972534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:11,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455550101] [2024-11-14 05:51:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:11,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:11,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:11,200 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:11,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-14 05:51:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:11,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-14 05:51:11,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:11,395 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 05:51:11,402 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 05:51:11,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:51:11,869 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 05:51:11,884 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:51:11,884 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 05:51:11,909 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 05:51:11,909 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:14,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455550101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:51:14,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:51:14,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-14 05:51:14,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368216966] [2024-11-14 05:51:14,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:51:14,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:51:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:51:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=108, Unknown=1, NotChecked=20, Total=156 [2024-11-14 05:51:14,212 INFO L87 Difference]: Start difference. First operand 82 states and 87 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 05:51:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:15,209 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2024-11-14 05:51:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:51:15,210 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 05:51:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:15,211 INFO L225 Difference]: With dead ends: 113 [2024-11-14 05:51:15,211 INFO L226 Difference]: Without dead ends: 113 [2024-11-14 05:51:15,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=66, Invalid=279, Unknown=1, NotChecked=34, Total=380 [2024-11-14 05:51:15,212 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 75 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:15,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 342 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 285 Invalid, 0 Unknown, 98 Unchecked, 0.7s Time] [2024-11-14 05:51:15,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-14 05:51:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2024-11-14 05:51:15,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2647058823529411) internal successors, (86), 81 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:51:15,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2024-11-14 05:51:15,218 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 50 [2024-11-14 05:51:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:15,219 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2024-11-14 05:51:15,219 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 05:51:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2024-11-14 05:51:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 05:51:15,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:15,221 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 05:51:15,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-14 05:51:15,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (25)] Forceful destruction successful, exit code 0 [2024-11-14 05:51:15,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2024-11-14 05:51:15,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:51:15,822 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:51:15,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:15,822 INFO L85 PathProgramCache]: Analyzing trace with hash -861402731, now seen corresponding path program 1 times [2024-11-14 05:51:15,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:15,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240064126] [2024-11-14 05:51:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:15,823 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 05:51:15,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:15,827 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:15,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:16,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:51:16,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:16,051 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 05:51:16,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:51:16,051 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:51:16,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240064126] [2024-11-14 05:51:16,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240064126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:51:16,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:51:16,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:51:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063568846] [2024-11-14 05:51:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:16,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:51:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:51:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:51:16,053 INFO L87 Difference]: Start difference. First operand 86 states and 94 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 05:51:16,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:16,093 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-11-14 05:51:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:51:16,094 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 05:51:16,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:16,095 INFO L225 Difference]: With dead ends: 93 [2024-11-14 05:51:16,095 INFO L226 Difference]: Without dead ends: 93 [2024-11-14 05:51:16,095 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 05:51:16,096 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 2 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 209 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 05:51:16,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 209 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:51:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-14 05:51:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2024-11-14 05:51:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.25) internal successors, (90), 83 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:51:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2024-11-14 05:51:16,101 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 52 [2024-11-14 05:51:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:16,102 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2024-11-14 05:51:16,102 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 05:51:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2024-11-14 05:51:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 05:51:16,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:16,104 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 05:51:16,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,305 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:51:16,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 881407604, now seen corresponding path program 1 times [2024-11-14 05:51:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714236031] [2024-11-14 05:51:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:16,306 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 05:51:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:16,307 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:16,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 05:51:16,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:16,508 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 05:51:16,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:51:16,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:51:16,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714236031] [2024-11-14 05:51:16,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714236031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:51:16,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:51:16,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:51:16,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674922008] [2024-11-14 05:51:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:51:16,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:51:16,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:16,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:51:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:51:16,510 INFO L87 Difference]: Start difference. First operand 90 states and 98 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 05:51:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:16,609 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-11-14 05:51:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:51:16,610 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 05:51:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:16,611 INFO L225 Difference]: With dead ends: 93 [2024-11-14 05:51:16,611 INFO L226 Difference]: Without dead ends: 93 [2024-11-14 05:51:16,611 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 05:51:16,612 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 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 05:51:16,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:51:16,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-14 05:51:16,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2024-11-14 05:51:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 85 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:51:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2024-11-14 05:51:16,617 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 52 [2024-11-14 05:51:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:16,617 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2024-11-14 05:51:16,618 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 05:51:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2024-11-14 05:51:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:51:16,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:16,619 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] [2024-11-14 05:51:16,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,820 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:51:16,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1417464271, now seen corresponding path program 1 times [2024-11-14 05:51:16,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:16,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874628703] [2024-11-14 05:51:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:16,821 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 05:51:16,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:16,824 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:16,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Waiting until timeout for monitored process [2024-11-14 05:51:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:17,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:51:17,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:17,091 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 7 [2024-11-14 05:51:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:17,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:17,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:51:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874628703] [2024-11-14 05:51:17,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874628703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1002489333] [2024-11-14 05:51:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:17,644 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:51:17,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:51:17,650 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:51:17,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-14 05:51:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:18,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 05:51:18,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:18,076 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 05:51:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:18,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:18,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1002489333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:18,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523299270] [2024-11-14 05:51:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:18,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:18,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:18,457 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:18,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 05:51:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:18,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 05:51:18,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:18,656 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 05:51:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:18,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:19,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523299270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:19,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:51:19,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 7 [2024-11-14 05:51:19,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458133596] [2024-11-14 05:51:19,032 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:51:19,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:51:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:19,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:51:19,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:51:19,033 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:51:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:19,348 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2024-11-14 05:51:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:51:19,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2024-11-14 05:51:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:19,349 INFO L225 Difference]: With dead ends: 106 [2024-11-14 05:51:19,349 INFO L226 Difference]: Without dead ends: 106 [2024-11-14 05:51:19,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 316 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 05:51:19,350 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:19,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 193 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:51:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-14 05:51:19,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2024-11-14 05:51:19,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 90 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-14 05:51:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2024-11-14 05:51:19,356 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 55 [2024-11-14 05:51:19,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:19,356 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2024-11-14 05:51:19,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 05:51:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2024-11-14 05:51:19,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:51:19,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:19,359 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] [2024-11-14 05:51:19,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Forceful destruction successful, exit code 0 [2024-11-14 05:51:19,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-14 05:51:19,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 05:51:19,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:19,961 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:51:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1417464270, now seen corresponding path program 1 times [2024-11-14 05:51:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:19,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258212621] [2024-11-14 05:51:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:19,962 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 05:51:19,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:19,964 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:19,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (33)] Waiting until timeout for monitored process [2024-11-14 05:51:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:20,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:51:20,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:20,208 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 05:51:20,628 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:20,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:21,737 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:51:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258212621] [2024-11-14 05:51:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258212621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:21,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [325699973] [2024-11-14 05:51:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:21,738 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:51:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:51:21,742 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:51:21,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-14 05:51:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:22,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:51:22,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:22,156 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 05:51:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:22,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:23,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [325699973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:23,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137933965] [2024-11-14 05:51:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:23,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:23,323 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:23,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 05:51:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:23,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-14 05:51:23,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:23,534 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 05:51:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:23,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-14 05:51:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137933965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:24,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:51:24,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 05:51:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837064695] [2024-11-14 05:51:24,676 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:51:24,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 05:51:24,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 05:51:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-14 05:51:24,677 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 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 05:51:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:25,741 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2024-11-14 05:51:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 05:51:25,742 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 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 55 [2024-11-14 05:51:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:25,743 INFO L225 Difference]: With dead ends: 137 [2024-11-14 05:51:25,743 INFO L226 Difference]: Without dead ends: 137 [2024-11-14 05:51:25,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:51:25,744 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 132 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:25,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 420 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 05:51:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-14 05:51:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2024-11-14 05:51:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 119 states have internal predecessors, (148), 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 05:51:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 159 transitions. [2024-11-14 05:51:25,750 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 159 transitions. Word has length 55 [2024-11-14 05:51:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:25,750 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 159 transitions. [2024-11-14 05:51:25,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 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 05:51:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 159 transitions. [2024-11-14 05:51:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:51:25,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:25,752 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, 1] [2024-11-14 05:51:25,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (33)] Ended with exit code 0 [2024-11-14 05:51:25,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-14 05:51:26,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-14 05:51:26,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:26,357 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:51:26,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:26,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1712803654, now seen corresponding path program 1 times [2024-11-14 05:51:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:26,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572458561] [2024-11-14 05:51:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:26,358 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 05:51:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:26,362 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:26,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (36)] Waiting until timeout for monitored process [2024-11-14 05:51:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:26,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:51:26,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:26,715 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 05:51:26,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:26,886 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 05:51:26,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:51:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572458561] [2024-11-14 05:51:26,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572458561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1619428511] [2024-11-14 05:51:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:26,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:51:26,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:51:26,889 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:51:26,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-14 05:51:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:27,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:51:27,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:27,417 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 05:51:27,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:27,568 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 05:51:27,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1619428511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:27,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728845944] [2024-11-14 05:51:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:27,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:51:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:51:27,571 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:51:27,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-14 05:51:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:27,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 05:51:27,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:27,917 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 05:51:27,917 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:28,046 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 05:51:28,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728845944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:51:28,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:51:28,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2024-11-14 05:51:28,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355362411] [2024-11-14 05:51:28,047 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:51:28,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 05:51:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:51:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 05:51:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:51:28,048 INFO L87 Difference]: Start difference. First operand 127 states and 159 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:51:28,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:51:28,250 INFO L93 Difference]: Finished difference Result 163 states and 211 transitions. [2024-11-14 05:51:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:51:28,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2024-11-14 05:51:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:51:28,252 INFO L225 Difference]: With dead ends: 163 [2024-11-14 05:51:28,252 INFO L226 Difference]: Without dead ends: 163 [2024-11-14 05:51:28,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-14 05:51:28,253 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 74 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:51:28,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 192 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:51:28,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-14 05:51:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-11-14 05:51:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 136 states have (on average 1.3529411764705883) internal successors, (184), 145 states have internal predecessors, (184), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 05:51:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 207 transitions. [2024-11-14 05:51:28,267 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 207 transitions. Word has length 56 [2024-11-14 05:51:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:51:28,268 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 207 transitions. [2024-11-14 05:51:28,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-14 05:51:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 207 transitions. [2024-11-14 05:51:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:51:28,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:51:28,269 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] [2024-11-14 05:51:28,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-14 05:51:28,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (36)] Ended with exit code 0 [2024-11-14 05:51:28,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-14 05:51:28,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:51:28,870 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:51:28,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:51:28,871 INFO L85 PathProgramCache]: Analyzing trace with hash -991719377, now seen corresponding path program 1 times [2024-11-14 05:51:28,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:51:28,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934205420] [2024-11-14 05:51:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:51:28,871 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 05:51:28,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:51:28,873 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:51:28,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Waiting until timeout for monitored process [2024-11-14 05:51:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:51:29,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-14 05:51:29,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:51:29,138 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 05:51:29,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:29,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-14 05:51:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:51:30,020 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:51:36,994 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 86 treesize of output 84 [2024-11-14 05:51:43,539 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 23053236961262 treesize of output 23051089477614 [2024-11-14 05:52:18,769 WARN L286 SmtUtils]: Spent 34.43s on a formula simplification. DAG size of input: 261080 DAG size of output: 87 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:52:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:52:18,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:52:18,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934205420] [2024-11-14 05:52:18,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934205420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:52:18,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1156115796] [2024-11-14 05:52:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:52:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:52:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:52:18,881 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:52:18,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-14 05:52:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:52:19,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-14 05:52:19,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:52:19,484 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 05:52:19,636 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 05:52:19,723 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 05:52:19,812 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 05:52:19,920 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 05:52:20,036 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 05:52:20,129 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 05:52:20,238 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 05:52:20,328 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 05:52:20,454 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 05:52:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:52:20,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:52:24,974 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 86 treesize of output 84 [2024-11-14 05:52:25,282 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 5636358126 treesize of output 5635833838 [2024-11-14 05:52:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:52:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1156115796] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:52:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777192495] [2024-11-14 05:52:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:52:27,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:52:27,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:52:27,288 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:52:27,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-14 05:52:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:52:27,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 05:52:27,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:52:27,634 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 05:52:27,954 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 05:52:28,219 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 05:52:28,375 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 05:52:28,384 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 5 treesize of output 3 [2024-11-14 05:52:28,429 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-14 05:52:28,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2024-11-14 05:52:28,578 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-14 05:52:28,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2024-11-14 05:52:28,700 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-14 05:52:28,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2024-11-14 05:52:28,819 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-14 05:52:28,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2024-11-14 05:52:28,942 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-14 05:52:28,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2024-11-14 05:52:29,076 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-14 05:52:29,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2024-11-14 05:52:29,253 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-14 05:52:29,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 20 [2024-11-14 05:52:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 71 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-14 05:52:29,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:52:31,296 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 30 treesize of output 28 [2024-11-14 05:52:31,313 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 144 treesize of output 142 [2024-11-14 05:52:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-14 05:52:31,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777192495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:52:31,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:52:31,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 19, 23, 14, 9] total 67 [2024-11-14 05:52:31,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775774481] [2024-11-14 05:52:31,630 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:52:31,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-14 05:52:31,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:52:31,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-14 05:52:31,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=944, Invalid=3612, Unknown=0, NotChecked=0, Total=4556 [2024-11-14 05:52:31,633 INFO L87 Difference]: Start difference. First operand 159 states and 207 transitions. Second operand has 68 states, 66 states have (on average 2.4393939393939394) internal successors, (161), 66 states have internal predecessors, (161), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:52:36,365 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 05:52:38,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:52:40,489 WARN L539 Checker$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 05:52:42,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:52:45,297 WARN L539 Checker$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 05:52:45,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:52:45,847 INFO L93 Difference]: Finished difference Result 225 states and 286 transitions. [2024-11-14 05:52:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 05:52:45,849 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 66 states have (on average 2.4393939393939394) internal successors, (161), 66 states have internal predecessors, (161), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 56 [2024-11-14 05:52:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:52:45,851 INFO L225 Difference]: With dead ends: 225 [2024-11-14 05:52:45,851 INFO L226 Difference]: Without dead ends: 225 [2024-11-14 05:52:45,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 237 SyntacticMatches, 27 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4241 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=1479, Invalid=6893, Unknown=0, NotChecked=0, Total=8372 [2024-11-14 05:52:45,853 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 184 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 26 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-14 05:52:45,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1486 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1294 Invalid, 5 Unknown, 0 Unchecked, 12.7s Time] [2024-11-14 05:52:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-14 05:52:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 170. [2024-11-14 05:52:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 145 states have (on average 1.3448275862068966) internal successors, (195), 155 states have internal predecessors, (195), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 05:52:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2024-11-14 05:52:45,867 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 56 [2024-11-14 05:52:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:52:45,869 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2024-11-14 05:52:45,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 66 states have (on average 2.4393939393939394) internal successors, (161), 66 states have internal predecessors, (161), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-14 05:52:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2024-11-14 05:52:45,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:52:45,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:52:45,871 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] [2024-11-14 05:52:45,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Ended with exit code 0 [2024-11-14 05:52:46,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2024-11-14 05:52:46,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-14 05:52:46,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:52:46,471 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:52:46,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:52:46,472 INFO L85 PathProgramCache]: Analyzing trace with hash -678577216, now seen corresponding path program 1 times [2024-11-14 05:52:46,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:52:46,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59181161] [2024-11-14 05:52:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:52:46,472 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 05:52:46,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:52:46,474 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:52:46,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (42)] Waiting until timeout for monitored process [2024-11-14 05:52:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:52:46,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 05:52:46,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:52:46,790 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 05:52:46,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:52:46,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:52:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59181161] [2024-11-14 05:52:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59181161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:52:46,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:52:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:52:46,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445078774] [2024-11-14 05:52:46,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:52:46,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:52:46,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:52:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:52:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:52:46,791 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:52:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:52:46,834 INFO L93 Difference]: Finished difference Result 179 states and 224 transitions. [2024-11-14 05:52:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:52:46,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-14 05:52:46,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:52:46,835 INFO L225 Difference]: With dead ends: 179 [2024-11-14 05:52:46,836 INFO L226 Difference]: Without dead ends: 179 [2024-11-14 05:52:46,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 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 05:52:46,836 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 27 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:52:46,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 114 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 05:52:46,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-14 05:52:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2024-11-14 05:52:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 156 states have internal predecessors, (192), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 05:52:46,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 215 transitions. [2024-11-14 05:52:46,844 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 215 transitions. Word has length 57 [2024-11-14 05:52:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:52:46,844 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 215 transitions. [2024-11-14 05:52:46,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 05:52:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 215 transitions. [2024-11-14 05:52:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:52:46,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:52:46,845 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] [2024-11-14 05:52:46,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (42)] Ended with exit code 0 [2024-11-14 05:52:47,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:52:47,046 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:52:47,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:52:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash -678529487, now seen corresponding path program 1 times [2024-11-14 05:52:47,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:52:47,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661973210] [2024-11-14 05:52:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:52:47,047 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 05:52:47,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:52:47,048 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:52:47,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Waiting until timeout for monitored process [2024-11-14 05:52:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:52:47,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-14 05:52:47,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:52:47,374 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:52:47,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 13 [2024-11-14 05:52:47,505 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 05:52:47,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 05:52:47,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:47,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-14 05:52:48,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:48,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-14 05:52:48,373 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:48,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-14 05:52:48,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:48,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-14 05:52:49,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:49,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-14 05:52:49,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:49,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-14 05:52:50,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:50,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-14 05:52:50,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:52:50,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-14 05:53:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:53:24,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:53:30,635 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 86 treesize of output 84 [2024-11-14 05:53:30,638 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 21456 treesize of output 21454 [2024-11-14 05:53:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:53:31,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:53:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661973210] [2024-11-14 05:53:31,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661973210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:53:31,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [942080341] [2024-11-14 05:53:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:53:31,704 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:53:31,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:53:31,706 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:53:31,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-14 05:53:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:53:32,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 05:53:32,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:53:32,771 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:53:32,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 13 [2024-11-14 05:53:33,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 05:53:33,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 05:53:34,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-14 05:53:38,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-11-14 05:53:43,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2024-11-14 05:53:47,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 17 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 58 [2024-11-14 05:53:52,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 23 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 68 [2024-11-14 05:53:57,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 30 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 78 [2024-11-14 05:54:01,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 38 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2024-11-14 05:54:06,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 47 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2024-11-14 05:54:09,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 47 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 31 [2024-11-14 05:54:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:54:09,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:54:10,020 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 86 treesize of output 84 [2024-11-14 05:54:10,024 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 21484 treesize of output 21482 [2024-11-14 05:54:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:54:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [942080341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:54:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039547135] [2024-11-14 05:54:10,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:54:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:54:10,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:54:10,860 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:54:10,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-14 05:54:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:54:11,119 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 05:54:11,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:54:11,688 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 05:54:12,606 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 05:54:12,988 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 05:54:13,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:13,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-14 05:54:13,431 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 5 treesize of output 3 [2024-11-14 05:54:13,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:13,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-14 05:54:14,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:14,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-14 05:54:14,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:14,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-14 05:54:15,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:15,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-14 05:54:15,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:15,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 61 treesize of output 78 [2024-11-14 05:54:16,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:16,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 68 treesize of output 88 [2024-11-14 05:54:17,204 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:54:17,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 75 treesize of output 98 [2024-11-14 05:54:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:54:19,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:54:24,206 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 86 treesize of output 84 [2024-11-14 05:54:24,250 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 21480 treesize of output 21478 [2024-11-14 05:54:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 126 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:54:27,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039547135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:54:27,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:54:27,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 28, 24, 29, 29] total 116 [2024-11-14 05:54:27,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158521422] [2024-11-14 05:54:27,081 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:54:27,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2024-11-14 05:54:27,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:54:27,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2024-11-14 05:54:27,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=10986, Unknown=28, NotChecked=0, Total=13572 [2024-11-14 05:54:27,086 INFO L87 Difference]: Start difference. First operand 171 states and 215 transitions. Second operand has 117 states, 114 states have (on average 1.956140350877193) internal successors, (223), 114 states have internal predecessors, (223), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 05:54:29,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:54:32,922 WARN L539 Checker$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 05:54:34,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:54:37,725 WARN L539 Checker$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 05:54:39,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:54:43,759 WARN L539 Checker$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 05:54:45,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:54:50,191 WARN L539 Checker$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 05:54:53,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:54:55,284 WARN L539 Checker$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 05:54:58,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:02,420 WARN L539 Checker$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 05:55:06,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:08,901 WARN L539 Checker$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 05:55:10,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:15,363 WARN L539 Checker$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 05:55:19,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:21,869 WARN L539 Checker$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 05:55:24,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:28,537 WARN L539 Checker$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 05:55:32,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:35,052 WARN L539 Checker$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 05:55:37,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:41,607 WARN L539 Checker$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 05:55:45,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:48,148 WARN L539 Checker$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 05:55:50,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:55:52,247 WARN L539 Checker$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 05:55:56,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:56:01,259 WARN L539 Checker$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 05:56:03,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:56:05,637 WARN L539 Checker$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 05:56:10,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:56:14,635 WARN L539 Checker$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 05:56:16,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:56:22,887 WARN L539 Checker$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 05:56:25,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:56:28,837 WARN L539 Checker$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 05:56:32,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:56:36,774 WARN L539 Checker$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 05:56:39,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:56:42,378 WARN L539 Checker$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 05:56:44,767 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 05:56:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:56:44,769 INFO L93 Difference]: Finished difference Result 227 states and 276 transitions. [2024-11-14 05:56:44,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-14 05:56:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 114 states have (on average 1.956140350877193) internal successors, (223), 114 states have internal predecessors, (223), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 57 [2024-11-14 05:56:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:56:44,774 INFO L225 Difference]: With dead ends: 227 [2024-11-14 05:56:44,774 INFO L226 Difference]: Without dead ends: 225 [2024-11-14 05:56:44,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 218 SyntacticMatches, 5 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10310 ImplicationChecksByTransitivity, 127.4s TimeCoverageRelationStatistics Valid=4014, Invalid=22027, Unknown=41, NotChecked=0, Total=26082 [2024-11-14 05:56:44,779 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 481 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 40 mSolverCounterUnsat, 43 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 2534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 43 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.9s IncrementalHoareTripleChecker+Time [2024-11-14 05:56:44,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1029 Invalid, 2534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2451 Invalid, 43 Unknown, 0 Unchecked, 97.9s Time] [2024-11-14 05:56:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-14 05:56:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 181. [2024-11-14 05:56:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 155 states have (on average 1.3161290322580645) internal successors, (204), 165 states have internal predecessors, (204), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 05:56:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 227 transitions. [2024-11-14 05:56:44,787 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 227 transitions. Word has length 57 [2024-11-14 05:56:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:56:44,788 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 227 transitions. [2024-11-14 05:56:44,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 114 states have (on average 1.956140350877193) internal successors, (223), 114 states have internal predecessors, (223), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 05:56:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 227 transitions. [2024-11-14 05:56:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 05:56:44,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:56:44,789 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 05:56:44,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Ended with exit code 0 [2024-11-14 05:56:44,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-14 05:56:45,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-14 05:56:45,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:56:45,390 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:56:45,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:56:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2017104519, now seen corresponding path program 1 times [2024-11-14 05:56:45,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:56:45,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727832083] [2024-11-14 05:56:45,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:45,391 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 05:56:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:56:45,393 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:56:45,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (46)] Waiting until timeout for monitored process [2024-11-14 05:56:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:56:45,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 05:56:45,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:56:45,702 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 05:56:45,715 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 05:56:46,440 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 05:56:46,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:56:46,470 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 05:56:46,491 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:56:46,492 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 05:56:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:56:46,738 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 05:56:46,760 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:56:46,760 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 05:56:46,838 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 05:56:46,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:56:51,303 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:56:51,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727832083] [2024-11-14 05:56:51,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727832083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:56:51,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1534311542] [2024-11-14 05:56:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:51,303 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:56:51,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:56:51,305 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:56:51,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2024-11-14 05:56:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:56:51,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-14 05:56:51,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:56:51,929 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 05:56:51,938 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 05:56:52,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:56:52,527 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 05:56:52,551 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:56:52,551 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 05:56:52,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:56:52,725 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 05:56:52,746 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:56:52,746 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 05:56:52,786 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 05:56:52,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:56:55,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1534311542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:56:55,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645333184] [2024-11-14 05:56:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:55,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:56:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:56:55,130 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:56:55,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-14 05:56:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:56:55,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-14 05:56:55,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:56:55,402 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 05:56:55,417 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 05:56:56,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:56:56,027 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 05:56:56,047 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:56:56,047 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 05:56:56,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 05:56:56,200 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 05:56:56,220 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 05:56:56,220 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 05:56:56,256 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 05:56:56,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:56:56,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645333184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:56:56,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:56:56,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 12 [2024-11-14 05:56:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193855434] [2024-11-14 05:56:56,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:56:56,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 05:56:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:56:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 05:56:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=148, Unknown=3, NotChecked=24, Total=210 [2024-11-14 05:56:56,623 INFO L87 Difference]: Start difference. First operand 181 states and 227 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 05:56:58,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:56:58,336 INFO L93 Difference]: Finished difference Result 193 states and 236 transitions. [2024-11-14 05:56:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 05:56:58,337 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 05:56:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:56:58,338 INFO L225 Difference]: With dead ends: 193 [2024-11-14 05:56:58,338 INFO L226 Difference]: Without dead ends: 193 [2024-11-14 05:56:58,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=98, Invalid=455, Unknown=3, NotChecked=44, Total=600 [2024-11-14 05:56:58,340 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 93 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:56:58,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 453 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 452 Invalid, 0 Unknown, 119 Unchecked, 1.2s Time] [2024-11-14 05:56:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-14 05:56:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2024-11-14 05:56:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 155 states have (on average 1.303225806451613) internal successors, (202), 165 states have internal predecessors, (202), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 05:56:58,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 225 transitions. [2024-11-14 05:56:58,350 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 225 transitions. Word has length 60 [2024-11-14 05:56:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:56:58,350 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 225 transitions. [2024-11-14 05:56:58,350 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 05:56:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 225 transitions. [2024-11-14 05:56:58,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 05:56:58,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:56:58,351 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, 1, 1, 1, 1, 1] [2024-11-14 05:56:58,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2024-11-14 05:56:58,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-14 05:56:58,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (46)] Ended with exit code 0 [2024-11-14 05:56:58,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:56:58,952 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:56:58,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:56:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1955723436, now seen corresponding path program 1 times [2024-11-14 05:56:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:56:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774098910] [2024-11-14 05:56:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:56:58,953 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 05:56:58,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:56:58,955 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:56:58,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Waiting until timeout for monitored process [2024-11-14 05:56:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:56:59,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-14 05:56:59,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:56:59,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-14 05:56:59,363 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 11 treesize of output 7 [2024-11-14 05:56:59,503 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 21 treesize of output 20 [2024-11-14 05:56:59,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:56:59,703 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 30 treesize of output 32 [2024-11-14 05:56:59,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:56:59,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2024-11-14 05:57:00,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:57:00,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-14 05:57:00,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:57:00,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2024-11-14 05:57:01,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:57:01,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2024-11-14 05:57:01,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:57:01,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2024-11-14 05:57:02,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:57:02,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 104 [2024-11-14 05:57:03,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:57:03,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 93 treesize of output 116 [2024-11-14 05:57:04,076 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 7 treesize of output 5 [2024-11-14 05:57:06,205 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 05:57:06,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 89 treesize of output 31 [2024-11-14 05:57:06,422 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 05:57:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:57:06,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:57:07,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:57:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774098910] [2024-11-14 05:57:07,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774098910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:57:07,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [51791402] [2024-11-14 05:57:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:57:07,237 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:57:07,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:57:07,239 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:57:07,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2024-11-14 05:57:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:57:07,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 05:57:07,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:57:07,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-14 05:57:08,512 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 11 treesize of output 7 [2024-11-14 05:57:08,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 05:57:09,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-14 05:57:09,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-11-14 05:57:10,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2024-11-14 05:57:11,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 58 [2024-11-14 05:57:11,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 68 [2024-11-14 05:57:12,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 78 [2024-11-14 05:57:13,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 88 [2024-11-14 05:57:14,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 46 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2024-11-14 05:57:14,790 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 7 treesize of output 5 [2024-11-14 05:57:16,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 46 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 31 [2024-11-14 05:57:16,841 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 05:57:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:57:16,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:57:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [51791402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:57:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764477696] [2024-11-14 05:57:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:57:17,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:57:17,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:57:17,143 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:57:17,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-14 05:57:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:57:17,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-14 05:57:17,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:57:17,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-14 05:57:18,676 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 11 treesize of output 7 [2024-11-14 05:57:19,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 05:57:19,784 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 5 treesize of output 3 [2024-11-14 05:57:19,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-14 05:57:20,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2024-11-14 05:57:20,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2024-11-14 05:57:21,418 INFO L349 Elim1Store]: treesize reduction 100, result has 26.5 percent of original size [2024-11-14 05:57:21,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 60 [2024-11-14 05:57:21,952 INFO L349 Elim1Store]: treesize reduction 100, result has 26.5 percent of original size [2024-11-14 05:57:21,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 60 [2024-11-14 05:57:22,479 INFO L349 Elim1Store]: treesize reduction 100, result has 26.5 percent of original size [2024-11-14 05:57:22,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 60 [2024-11-14 05:57:23,010 INFO L349 Elim1Store]: treesize reduction 100, result has 26.5 percent of original size [2024-11-14 05:57:23,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 60 [2024-11-14 05:57:23,529 INFO L349 Elim1Store]: treesize reduction 100, result has 26.5 percent of original size [2024-11-14 05:57:23,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 60 [2024-11-14 05:57:25,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2024-11-14 05:57:25,401 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 05:57:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 110 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 05:57:25,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:57:25,582 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 46 treesize of output 42 [2024-11-14 05:57:31,169 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 54 treesize of output 52 [2024-11-14 05:57:31,203 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 1372 treesize of output 1370 [2024-11-14 05:57:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 78 proven. 41 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-14 05:57:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764477696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:57:33,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-14 05:57:33,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 20, 18] total 87 [2024-11-14 05:57:33,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823977099] [2024-11-14 05:57:33,622 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-14 05:57:33,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-14 05:57:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:57:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-14 05:57:33,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=7046, Unknown=0, NotChecked=0, Total=8010 [2024-11-14 05:57:33,626 INFO L87 Difference]: Start difference. First operand 181 states and 225 transitions. Second operand has 88 states, 86 states have (on average 2.116279069767442) internal successors, (182), 84 states have internal predecessors, (182), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-14 05:57:36,777 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 05:57:39,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 05:57:42,685 WARN L539 Checker$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 05:57:55,907 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 05:57:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:57:56,222 INFO L93 Difference]: Finished difference Result 232 states and 280 transitions. [2024-11-14 05:57:56,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-14 05:57:56,224 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 86 states have (on average 2.116279069767442) internal successors, (182), 84 states have internal predecessors, (182), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 60 [2024-11-14 05:57:56,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:57:56,226 INFO L225 Difference]: With dead ends: 232 [2024-11-14 05:57:56,226 INFO L226 Difference]: Without dead ends: 232 [2024-11-14 05:57:56,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 164 SyntacticMatches, 14 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6354 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=1696, Invalid=14054, Unknown=0, NotChecked=0, Total=15750 [2024-11-14 05:57:56,229 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 221 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2024-11-14 05:57:56,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1240 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2180 Invalid, 4 Unknown, 0 Unchecked, 16.0s Time] [2024-11-14 05:57:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-14 05:57:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 183. [2024-11-14 05:57:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 157 states have (on average 1.305732484076433) internal successors, (205), 167 states have internal predecessors, (205), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 05:57:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 228 transitions. [2024-11-14 05:57:56,236 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 228 transitions. Word has length 60 [2024-11-14 05:57:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:57:56,236 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 228 transitions. [2024-11-14 05:57:56,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 86 states have (on average 2.116279069767442) internal successors, (182), 84 states have internal predecessors, (182), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-14 05:57:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 228 transitions. [2024-11-14 05:57:56,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-14 05:57:56,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:57:56,237 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 05:57:56,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-14 05:57:56,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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)] Forceful destruction successful, exit code 0 [2024-11-14 05:57:56,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (50)] Ended with exit code 0 [2024-11-14 05:57:56,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 05:57:56,838 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:57:56,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:57:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1145015502, now seen corresponding path program 1 times [2024-11-14 05:57:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:57:56,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284157493] [2024-11-14 05:57:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:57:56,838 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 05:57:56,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:57:56,841 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:57:56,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (52)] Waiting until timeout for monitored process [2024-11-14 05:57:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:57:57,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:57:57,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:57:57,549 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 05:57:57,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:57:58,339 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 05:57:58,955 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 05:57:58,955 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:57:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284157493] [2024-11-14 05:57:58,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284157493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:57:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [199931287] [2024-11-14 05:57:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:57:58,955 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:57:58,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:57:58,957 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:57:58,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2024-11-14 05:57:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:57:59,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:57:59,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:57:59,950 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 05:57:59,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:58:00,313 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 05:58:00,621 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 05:58:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [199931287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:58:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264781761] [2024-11-14 05:58:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:58:00,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:58:00,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:58:00,624 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:58:00,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-14 05:58:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:58:00,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 05:58:00,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:58:01,211 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 05:58:01,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:58:03,649 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 05:58:03,902 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 05:58:03,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264781761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:58:03,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 05:58:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 18 [2024-11-14 05:58:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144053854] [2024-11-14 05:58:03,903 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 05:58:03,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 05:58:03,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 05:58:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 05:58:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=292, Unknown=1, NotChecked=0, Total=342 [2024-11-14 05:58:03,904 INFO L87 Difference]: Start difference. First operand 183 states and 228 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 05:58:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:58:06,083 INFO L93 Difference]: Finished difference Result 219 states and 275 transitions. [2024-11-14 05:58:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 05:58:06,085 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 05:58:06,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:58:06,086 INFO L225 Difference]: With dead ends: 219 [2024-11-14 05:58:06,086 INFO L226 Difference]: Without dead ends: 219 [2024-11-14 05:58:06,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=146, Invalid=783, Unknown=1, NotChecked=0, Total=930 [2024-11-14 05:58:06,087 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 79 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:58:06,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 388 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 05:58:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-14 05:58:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 188. [2024-11-14 05:58:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 163 states have (on average 1.2822085889570551) internal successors, (209), 172 states have internal predecessors, (209), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2024-11-14 05:58:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 232 transitions. [2024-11-14 05:58:06,094 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 232 transitions. Word has length 62 [2024-11-14 05:58:06,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:58:06,095 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 232 transitions. [2024-11-14 05:58:06,095 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 05:58:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 232 transitions. [2024-11-14 05:58:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 05:58:06,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:58:06,096 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-14 05:58:06,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2024-11-14 05:58:06,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (52)] Ended with exit code 0 [2024-11-14 05:58:06,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-14 05:58:06,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:58:06,697 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-14 05:58:06,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:58:06,697 INFO L85 PathProgramCache]: Analyzing trace with hash -497884308, now seen corresponding path program 1 times [2024-11-14 05:58:06,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 05:58:06,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833366940] [2024-11-14 05:58:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:58:06,698 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 05:58:06,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 05:58:06,701 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 05:58:06,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/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 (55)] Waiting until timeout for monitored process [2024-11-14 05:58:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:58:07,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-14 05:58:07,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:58:07,105 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 13 treesize of output 9 [2024-11-14 05:58:07,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:07,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:07,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:07,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:07,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:07,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:07,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:07,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-14 05:58:08,301 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 4 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:58:08,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:58:18,443 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 80 treesize of output 78 [2024-11-14 05:58:19,040 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 1443105865702 treesize of output 1442568994790 [2024-11-14 05:58:37,823 WARN L286 SmtUtils]: Spent 18.69s on a formula simplification. DAG size of input: 42551 DAG size of output: 76 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 05:58:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:58:38,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 05:58:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833366940] [2024-11-14 05:58:38,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833366940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:58:38,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1845900442] [2024-11-14 05:58:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:58:38,050 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 05:58:38,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 05:58:38,052 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 05:58:38,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03670f5c-b903-4f43-825f-4c5645788c8c/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2024-11-14 05:58:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:58:38,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-14 05:58:38,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:58:39,191 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 05:58:39,414 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 05:58:39,562 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 23 treesize of output 11 [2024-11-14 05:58:39,732 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 05:58:39,884 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 05:58:40,036 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 05:58:40,164 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 05:58:40,312 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 05:58:40,467 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 05:58:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:58:41,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:58:44,819 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 80 treesize of output 78 [2024-11-14 05:58:50,594 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 85761772748782 treesize of output 85727413010414