./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.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_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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_10486841-c5d6-47b3-80a4-7a669084c77a/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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:28:24,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:28:24,314 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-14 03:28:24,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:28:24,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:28:24,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:28:24,348 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:28:24,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:28:24,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:28:24,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:28:24,349 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:28:24,349 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:28:24,349 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:28:24,349 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:28:24,349 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:28:24,349 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:28:24,350 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:28:24,350 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:28:24,350 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:28:24,350 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:28:24,350 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:28:24,351 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:28:24,351 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:28:24,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:28:24,351 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:28:24,351 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:28:24,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:28:24,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:28:24,352 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:28:24,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:28:24,353 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:28:24,353 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:28:24,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:28:24,353 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:28:24,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:28:24,353 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:28:24,353 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:28:24,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:28:24,354 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:28:24,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:28:24,355 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_10486841-c5d6-47b3-80a4-7a669084c77a/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 -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2024-11-14 03:28:24,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:28:24,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:28:24,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:28:24,720 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:28:24,722 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:28:24,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i Unable to find full path for "g++" [2024-11-14 03:28:26,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:28:27,054 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:28:27,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2024-11-14 03:28:27,084 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data/4e1737dd2/d80cac75bcd247b49ed5174fe018020c/FLAG5ea00a5c2 [2024-11-14 03:28:27,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data/4e1737dd2/d80cac75bcd247b49ed5174fe018020c [2024-11-14 03:28:27,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:28:27,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:28:27,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:28:27,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:28:27,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:28:27,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:28:27" (1/1) ... [2024-11-14 03:28:27,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b155e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:27, skipping insertion in model container [2024-11-14 03:28:27,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:28:27" (1/1) ... [2024-11-14 03:28:27,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:28:27,604 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:28:27,689 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:28:27,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:28:27,712 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-14 03:28:27,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3660a5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:27, skipping insertion in model container [2024-11-14 03:28:27,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:28:27,713 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-14 03:28:27,715 INFO L158 Benchmark]: Toolchain (without parser) took 602.47ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 102.5MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:28:27,716 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:28:27,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.97ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 102.5MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:28:27,718 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 142.6MB. Free memory is still 78.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 597.97ms. Allocated memory is still 142.6MB. Free memory was 117.1MB in the beginning and 102.5MB in the end (delta: 14.7MB). 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_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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_10486841-c5d6-47b3-80a4-7a669084c77a/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 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:28:30,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:28:30,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2024-11-14 03:28:30,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:28:30,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:28:30,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:28:30,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:28:30,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:28:30,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:28:30,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:28:30,542 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:28:30,542 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:28:30,542 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:28:30,542 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:28:30,542 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:28:30,542 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:28:30,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-14 03:28:30,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-14 03:28:30,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:28:30,546 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:28:30,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:28:30,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:28:30,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:28:30,547 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 03:28:30,548 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 03:28:30,548 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:28:30,548 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:28:30,548 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:28:30,548 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 03:28:30,548 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:28:30,548 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:28:30,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:28:30,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:28:30,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:28:30,550 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 03:28:30,550 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 03:28:30,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:28:30,550 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:28:30,550 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_10486841-c5d6-47b3-80a4-7a669084c77a/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 -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2024-11-14 03:28:30,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:28:30,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:28:30,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:28:30,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:28:30,903 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:28:30,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i Unable to find full path for "g++" [2024-11-14 03:28:33,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:28:33,396 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:28:33,396 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2024-11-14 03:28:33,422 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data/9ee445046/83b6654e999c4554bd2d5bbb39949a00/FLAG14069dfc7 [2024-11-14 03:28:33,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/data/9ee445046/83b6654e999c4554bd2d5bbb39949a00 [2024-11-14 03:28:33,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:28:33,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:28:33,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:28:33,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:28:33,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:28:33,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:28:33" (1/1) ... [2024-11-14 03:28:33,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f07de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:33, skipping insertion in model container [2024-11-14 03:28:33,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:28:33" (1/1) ... [2024-11-14 03:28:33,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:28:33,986 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:28:34,146 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:28:34,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:28:34,189 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-14 03:28:34,208 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:28:34,244 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:28:34,279 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 03:28:34,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:28:34,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:28:34,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:28:34,421 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:28:34,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34 WrapperNode [2024-11-14 03:28:34,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:28:34,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:28:34,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:28:34,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:28:34,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,484 INFO L138 Inliner]: procedures = 175, calls = 121, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 203 [2024-11-14 03:28:34,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:28:34,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:28:34,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:28:34,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:28:34,494 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:28:34,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:28:34,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:28:34,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:28:34,541 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (1/1) ... [2024-11-14 03:28:34,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:28:34,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:28:34,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:28:34,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:28:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 03:28:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2024-11-14 03:28:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-14 03:28:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 03:28:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2024-11-14 03:28:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 03:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:28:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:28:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-11-14 03:28:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-11-14 03:28:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-14 03:28:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-14 03:28:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:28:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:28:34,808 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:28:34,811 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:28:35,970 INFO L? ?]: Removed 247 outVars from TransFormulas that were not future-live. [2024-11-14 03:28:35,971 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:28:35,994 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:28:35,996 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-14 03:28:35,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:28:35 BoogieIcfgContainer [2024-11-14 03:28:35,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:28:36,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:28:36,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:28:36,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:28:36,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:28:33" (1/3) ... [2024-11-14 03:28:36,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49266be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:28:36, skipping insertion in model container [2024-11-14 03:28:36,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:28:34" (2/3) ... [2024-11-14 03:28:36,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49266be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:28:36, skipping insertion in model container [2024-11-14 03:28:36,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:28:35" (3/3) ... [2024-11-14 03:28:36,009 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2024-11-14 03:28:36,027 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:28:36,031 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test23_2.i that has 7 procedures, 205 locations, 1 initial locations, 2 loop locations, and 80 error locations. [2024-11-14 03:28:36,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:28:36,100 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;@23f0467b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:28:36,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2024-11-14 03:28:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 110 states have (on average 1.8545454545454545) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:28:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:28:36,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:36,114 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:36,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:36,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1157574794, now seen corresponding path program 1 times [2024-11-14 03:28:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:36,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223214912] [2024-11-14 03:28:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:36,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:36,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:36,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:36,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-14 03:28:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:36,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:28:36,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:36,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:28:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:36,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:36,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223214912] [2024-11-14 03:28:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223214912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:36,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:36,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:28:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393143158] [2024-11-14 03:28:36,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:36,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:28:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:28:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:28:36,468 INFO L87 Difference]: Start difference. First operand has 205 states, 110 states have (on average 1.8545454545454545) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:37,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:37,598 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2024-11-14 03:28:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:28:37,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:28:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:37,612 INFO L225 Difference]: With dead ends: 221 [2024-11-14 03:28:37,614 INFO L226 Difference]: Without dead ends: 219 [2024-11-14 03:28:37,616 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:28:37,621 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 10 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:37,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 832 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-14 03:28:37,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-14 03:28:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 212. [2024-11-14 03:28:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 116 states have (on average 1.8017241379310345) internal successors, (209), 195 states have internal predecessors, (209), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-14 03:28:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 228 transitions. [2024-11-14 03:28:37,693 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 228 transitions. Word has length 12 [2024-11-14 03:28:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:37,693 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 228 transitions. [2024-11-14 03:28:37,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 228 transitions. [2024-11-14 03:28:37,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:28:37,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:37,694 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:37,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:28:37,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:37,895 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:37,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1157574793, now seen corresponding path program 1 times [2024-11-14 03:28:37,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:37,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930573741] [2024-11-14 03:28:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:37,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:37,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:37,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:37,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-14 03:28:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:38,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-14 03:28:38,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:38,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:28:38,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:38,255 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:38,255 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:38,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930573741] [2024-11-14 03:28:38,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930573741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:38,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:38,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:28:38,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68897955] [2024-11-14 03:28:38,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:38,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:28:38,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:28:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:28:38,262 INFO L87 Difference]: Start difference. First operand 212 states and 228 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:39,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:39,470 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2024-11-14 03:28:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:28:39,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:28:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:39,474 INFO L225 Difference]: With dead ends: 216 [2024-11-14 03:28:39,475 INFO L226 Difference]: Without dead ends: 216 [2024-11-14 03:28:39,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:28:39,478 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 10 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:39,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1095 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 03:28:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-14 03:28:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2024-11-14 03:28:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 116 states have (on average 1.7844827586206897) internal successors, (207), 195 states have internal predecessors, (207), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-14 03:28:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 226 transitions. [2024-11-14 03:28:39,507 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 226 transitions. Word has length 12 [2024-11-14 03:28:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:39,507 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 226 transitions. [2024-11-14 03:28:39,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 226 transitions. [2024-11-14 03:28:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:28:39,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:39,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:39,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Forceful destruction successful, exit code 0 [2024-11-14 03:28:39,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:39,712 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:39,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash 585235541, now seen corresponding path program 1 times [2024-11-14 03:28:39,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:39,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33671277] [2024-11-14 03:28:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:39,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:39,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:39,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:39,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-14 03:28:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:39,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:28:39,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:39,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:39,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33671277] [2024-11-14 03:28:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33671277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:28:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560197157] [2024-11-14 03:28:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:39,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:28:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:39,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:28:39,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:28:39,908 INFO L87 Difference]: Start difference. First operand 212 states and 226 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:39,960 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2024-11-14 03:28:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:28:39,961 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-14 03:28:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:39,962 INFO L225 Difference]: With dead ends: 203 [2024-11-14 03:28:39,962 INFO L226 Difference]: Without dead ends: 203 [2024-11-14 03:28:39,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:28:39,963 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 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 03:28:39,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:28:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-14 03:28:39,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2024-11-14 03:28:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 112 states have (on average 1.7767857142857142) internal successors, (199), 187 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-14 03:28:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2024-11-14 03:28:39,986 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2024-11-14 03:28:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:39,986 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2024-11-14 03:28:39,986 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2024-11-14 03:28:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:28:39,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:39,987 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:39,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Forceful destruction successful, exit code 0 [2024-11-14 03:28:40,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:40,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:40,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1157660170, now seen corresponding path program 1 times [2024-11-14 03:28:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:40,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129653053] [2024-11-14 03:28:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:40,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:40,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:40,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:40,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-14 03:28:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:40,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:28:40,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:40,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:40,322 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:40,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129653053] [2024-11-14 03:28:40,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129653053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:40,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:40,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:28:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553983587] [2024-11-14 03:28:40,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:40,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:28:40,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:28:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:28:40,324 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:40,382 INFO L93 Difference]: Finished difference Result 204 states and 216 transitions. [2024-11-14 03:28:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:28:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2024-11-14 03:28:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:40,385 INFO L225 Difference]: With dead ends: 204 [2024-11-14 03:28:40,385 INFO L226 Difference]: Without dead ends: 204 [2024-11-14 03:28:40,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:28:40,387 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 106 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:40,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 707 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:28:40,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-14 03:28:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2024-11-14 03:28:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 112 states have (on average 1.7678571428571428) internal successors, (198), 187 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-14 03:28:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 215 transitions. [2024-11-14 03:28:40,398 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 215 transitions. Word has length 12 [2024-11-14 03:28:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:40,398 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 215 transitions. [2024-11-14 03:28:40,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:40,399 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 215 transitions. [2024-11-14 03:28:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-14 03:28:40,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:40,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:40,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-14 03:28:40,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:40,602 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:40,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:40,603 INFO L85 PathProgramCache]: Analyzing trace with hash 585150165, now seen corresponding path program 1 times [2024-11-14 03:28:40,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:40,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759157936] [2024-11-14 03:28:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:40,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:40,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:40,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:40,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-14 03:28:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:40,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:28:40,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:40,716 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:40,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759157936] [2024-11-14 03:28:40,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759157936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:40,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:40,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:28:40,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780503186] [2024-11-14 03:28:40,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:40,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:28:40,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:28:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:28:40,718 INFO L87 Difference]: Start difference. First operand 203 states and 215 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:40,755 INFO L93 Difference]: Finished difference Result 205 states and 217 transitions. [2024-11-14 03:28:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:28:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2024-11-14 03:28:40,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:40,757 INFO L225 Difference]: With dead ends: 205 [2024-11-14 03:28:40,757 INFO L226 Difference]: Without dead ends: 205 [2024-11-14 03:28:40,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:28:40,758 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 100 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:40,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 718 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:28:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-14 03:28:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-14 03:28:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 114 states have (on average 1.7543859649122806) internal successors, (200), 189 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-14 03:28:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 217 transitions. [2024-11-14 03:28:40,767 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 217 transitions. Word has length 12 [2024-11-14 03:28:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:40,767 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 217 transitions. [2024-11-14 03:28:40,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 217 transitions. [2024-11-14 03:28:40,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-14 03:28:40,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:40,768 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:40,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-14 03:28:40,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:40,969 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:40,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash 959806042, now seen corresponding path program 1 times [2024-11-14 03:28:40,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:40,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162299033] [2024-11-14 03:28:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:40,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:40,973 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:40,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-14 03:28:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:41,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:28:41,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:41,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:41,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:41,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162299033] [2024-11-14 03:28:41,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162299033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:41,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:41,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:28:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483092321] [2024-11-14 03:28:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:41,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:28:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:41,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:28:41,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:28:41,094 INFO L87 Difference]: Start difference. First operand 205 states and 217 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:41,623 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2024-11-14 03:28:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:28:41,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2024-11-14 03:28:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:41,624 INFO L225 Difference]: With dead ends: 217 [2024-11-14 03:28:41,624 INFO L226 Difference]: Without dead ends: 209 [2024-11-14 03:28:41,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:28:41,625 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 51 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:41,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 378 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:28:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-14 03:28:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2024-11-14 03:28:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 109 states have (on average 1.7798165137614679) internal successors, (194), 184 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-14 03:28:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 210 transitions. [2024-11-14 03:28:41,635 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 210 transitions. Word has length 13 [2024-11-14 03:28:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:41,635 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 210 transitions. [2024-11-14 03:28:41,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:28:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 210 transitions. [2024-11-14 03:28:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:28:41,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:41,636 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:41,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-11-14 03:28:41,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:41,837 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:41,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:41,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1501356322, now seen corresponding path program 1 times [2024-11-14 03:28:41,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:41,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414501264] [2024-11-14 03:28:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:41,838 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 03:28:41,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:41,840 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:41,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:28:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:41,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 03:28:41,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:42,136 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 03:28:42,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 03:28:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:42,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:42,209 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:42,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414501264] [2024-11-14 03:28:42,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414501264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:42,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:42,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:28:42,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630156226] [2024-11-14 03:28:42,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:42,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:28:42,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:42,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:28:42,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:28:42,211 INFO L87 Difference]: Start difference. First operand 199 states and 210 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:28:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:43,679 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2024-11-14 03:28:43,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-14 03:28:43,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-11-14 03:28:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:43,681 INFO L225 Difference]: With dead ends: 250 [2024-11-14 03:28:43,681 INFO L226 Difference]: Without dead ends: 250 [2024-11-14 03:28:43,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:28:43,682 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 210 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:43,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 517 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:28:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-14 03:28:43,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2024-11-14 03:28:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 118 states have (on average 1.7627118644067796) internal successors, (208), 193 states have internal predecessors, (208), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-14 03:28:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2024-11-14 03:28:43,701 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 16 [2024-11-14 03:28:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:43,701 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2024-11-14 03:28:43,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-14 03:28:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2024-11-14 03:28:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-14 03:28:43,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:43,702 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:43,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:28:43,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:43,902 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:43,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:43,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1501356321, now seen corresponding path program 1 times [2024-11-14 03:28:43,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:43,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380782129] [2024-11-14 03:28:43,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:43,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:43,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:43,905 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:43,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-14 03:28:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:44,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-14 03:28:44,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:44,158 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-14 03:28:44,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:28:44,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:28:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:44,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:44,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380782129] [2024-11-14 03:28:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380782129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:44,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:44,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:28:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698182242] [2024-11-14 03:28:44,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:44,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:28:44,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:28:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2024-11-14 03:28:44,309 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:28:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:45,515 INFO L93 Difference]: Finished difference Result 249 states and 263 transitions. [2024-11-14 03:28:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:28:45,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-14 03:28:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:45,518 INFO L225 Difference]: With dead ends: 249 [2024-11-14 03:28:45,518 INFO L226 Difference]: Without dead ends: 249 [2024-11-14 03:28:45,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2024-11-14 03:28:45,518 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 301 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:45,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 244 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 476 Invalid, 0 Unknown, 261 Unchecked, 1.1s Time] [2024-11-14 03:28:45,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-14 03:28:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 208. [2024-11-14 03:28:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.7542372881355932) internal successors, (207), 192 states have internal predecessors, (207), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-14 03:28:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 225 transitions. [2024-11-14 03:28:45,526 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 225 transitions. Word has length 16 [2024-11-14 03:28:45,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:45,527 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 225 transitions. [2024-11-14 03:28:45,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:28:45,527 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 225 transitions. [2024-11-14 03:28:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:28:45,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:45,528 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:45,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-14 03:28:45,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:45,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:45,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1809135582, now seen corresponding path program 1 times [2024-11-14 03:28:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:45,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165811875] [2024-11-14 03:28:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:45,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:45,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:45,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:45,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-14 03:28:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:45,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 03:28:45,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:45,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:28:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:45,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:45,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:45,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1165811875] [2024-11-14 03:28:45,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1165811875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:45,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:45,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:28:45,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795109402] [2024-11-14 03:28:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:45,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:28:45,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:45,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:28:45,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:28:45,917 INFO L87 Difference]: Start difference. First operand 208 states and 225 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:46,723 INFO L93 Difference]: Finished difference Result 265 states and 290 transitions. [2024-11-14 03:28:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:28:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-14 03:28:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:46,725 INFO L225 Difference]: With dead ends: 265 [2024-11-14 03:28:46,725 INFO L226 Difference]: Without dead ends: 265 [2024-11-14 03:28:46,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:28:46,726 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 67 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:46,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 631 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 03:28:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-14 03:28:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 237. [2024-11-14 03:28:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 149 states have (on average 1.7718120805369129) internal successors, (264), 221 states have internal predecessors, (264), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-14 03:28:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 282 transitions. [2024-11-14 03:28:46,744 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 282 transitions. Word has length 25 [2024-11-14 03:28:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:46,744 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 282 transitions. [2024-11-14 03:28:46,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 282 transitions. [2024-11-14 03:28:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-14 03:28:46,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:46,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:46,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Forceful destruction successful, exit code 0 [2024-11-14 03:28:46,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:46,947 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:46,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1809135581, now seen corresponding path program 1 times [2024-11-14 03:28:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:46,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166974445] [2024-11-14 03:28:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:46,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:46,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:46,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:46,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:28:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:47,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:28:47,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:47,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:28:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:47,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:47,200 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:47,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166974445] [2024-11-14 03:28:47,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166974445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:47,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:28:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076973106] [2024-11-14 03:28:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:47,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:28:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:28:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:28:47,201 INFO L87 Difference]: Start difference. First operand 237 states and 282 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:48,115 INFO L93 Difference]: Finished difference Result 263 states and 288 transitions. [2024-11-14 03:28:48,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:28:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-14 03:28:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:48,117 INFO L225 Difference]: With dead ends: 263 [2024-11-14 03:28:48,117 INFO L226 Difference]: Without dead ends: 263 [2024-11-14 03:28:48,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:28:48,118 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 64 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:48,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 666 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 03:28:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-14 03:28:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 238. [2024-11-14 03:28:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 151 states have (on average 1.7549668874172186) internal successors, (265), 221 states have internal predecessors, (265), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:28:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2024-11-14 03:28:48,130 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 25 [2024-11-14 03:28:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:48,130 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2024-11-14 03:28:48,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2024-11-14 03:28:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-14 03:28:48,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:48,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:48,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:28:48,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:48,335 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:48,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash 882529542, now seen corresponding path program 1 times [2024-11-14 03:28:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447040977] [2024-11-14 03:28:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:48,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:48,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:48,337 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:48,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-14 03:28:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:48,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:28:48,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:48,491 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:48,491 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:48,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447040977] [2024-11-14 03:28:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447040977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:48,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:48,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:28:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753679795] [2024-11-14 03:28:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:48,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:28:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:28:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:28:48,493 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:48,608 INFO L93 Difference]: Finished difference Result 238 states and 285 transitions. [2024-11-14 03:28:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:28:48,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2024-11-14 03:28:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:48,610 INFO L225 Difference]: With dead ends: 238 [2024-11-14 03:28:48,610 INFO L226 Difference]: Without dead ends: 238 [2024-11-14 03:28:48,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:28:48,610 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 83 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:48,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 858 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:28:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-14 03:28:48,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-11-14 03:28:48,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 151 states have (on average 1.7483443708609272) internal successors, (264), 221 states have internal predecessors, (264), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:28:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2024-11-14 03:28:48,619 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 27 [2024-11-14 03:28:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:48,620 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2024-11-14 03:28:48,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2024-11-14 03:28:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:28:48,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:48,621 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:48,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-14 03:28:48,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:48,821 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:48,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1370881749, now seen corresponding path program 1 times [2024-11-14 03:28:48,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:48,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524647328] [2024-11-14 03:28:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:48,824 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:48,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:28:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:49,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:28:49,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:49,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:28:49,080 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 03:28:49,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 03:28:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:49,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:49,149 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:49,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524647328] [2024-11-14 03:28:49,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524647328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:49,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:49,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:28:49,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240054205] [2024-11-14 03:28:49,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:49,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:28:49,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:49,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:28:49,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:28:49,151 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:28:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:50,348 INFO L93 Difference]: Finished difference Result 249 states and 292 transitions. [2024-11-14 03:28:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:28:50,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-14 03:28:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:50,350 INFO L225 Difference]: With dead ends: 249 [2024-11-14 03:28:50,350 INFO L226 Difference]: Without dead ends: 249 [2024-11-14 03:28:50,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:28:50,351 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 134 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:50,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 591 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-14 03:28:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-14 03:28:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 233. [2024-11-14 03:28:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 151 states have (on average 1.6821192052980132) internal successors, (254), 216 states have internal predecessors, (254), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:28:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 275 transitions. [2024-11-14 03:28:50,363 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 275 transitions. Word has length 33 [2024-11-14 03:28:50,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:50,363 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 275 transitions. [2024-11-14 03:28:50,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:28:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 275 transitions. [2024-11-14 03:28:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-14 03:28:50,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:50,366 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:50,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:28:50,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:50,567 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:50,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1370881748, now seen corresponding path program 1 times [2024-11-14 03:28:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:50,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794107715] [2024-11-14 03:28:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:50,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:50,569 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:50,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:28:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:50,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-14 03:28:50,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:50,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:28:50,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:28:50,881 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2024-11-14 03:28:50,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:28:50,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:28:50,948 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:28:50,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-14 03:28:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:51,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:51,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794107715] [2024-11-14 03:28:51,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794107715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:51,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:51,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:28:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053766162] [2024-11-14 03:28:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:51,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:28:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:28:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2024-11-14 03:28:51,048 INFO L87 Difference]: Start difference. First operand 233 states and 275 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:28:52,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:52,367 INFO L93 Difference]: Finished difference Result 284 states and 310 transitions. [2024-11-14 03:28:52,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:28:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-14 03:28:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:52,369 INFO L225 Difference]: With dead ends: 284 [2024-11-14 03:28:52,369 INFO L226 Difference]: Without dead ends: 284 [2024-11-14 03:28:52,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2024-11-14 03:28:52,370 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 136 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 316 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:52,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 425 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 536 Invalid, 0 Unknown, 316 Unchecked, 1.2s Time] [2024-11-14 03:28:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-14 03:28:52,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 233. [2024-11-14 03:28:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 151 states have (on average 1.6490066225165563) internal successors, (249), 216 states have internal predecessors, (249), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:28:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 270 transitions. [2024-11-14 03:28:52,384 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 270 transitions. Word has length 33 [2024-11-14 03:28:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:52,386 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 270 transitions. [2024-11-14 03:28:52,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:28:52,386 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 270 transitions. [2024-11-14 03:28:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 03:28:52,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:52,387 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:52,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:28:52,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:52,590 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:52,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 904610903, now seen corresponding path program 1 times [2024-11-14 03:28:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705746443] [2024-11-14 03:28:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:52,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:52,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:52,595 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:52,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-14 03:28:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:52,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 03:28:52,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:53,291 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:53,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705746443] [2024-11-14 03:28:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705746443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:53,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:53,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:28:53,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95682852] [2024-11-14 03:28:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:53,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:28:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:53,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:28:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:28:53,295 INFO L87 Difference]: Start difference. First operand 233 states and 270 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:28:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:53,874 INFO L93 Difference]: Finished difference Result 231 states and 267 transitions. [2024-11-14 03:28:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:28:53,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-14 03:28:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:53,877 INFO L225 Difference]: With dead ends: 231 [2024-11-14 03:28:53,877 INFO L226 Difference]: Without dead ends: 231 [2024-11-14 03:28:53,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:28:53,878 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 306 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:53,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 727 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:28:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-14 03:28:53,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-14 03:28:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 151 states have (on average 1.6291390728476822) internal successors, (246), 214 states have internal predecessors, (246), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:28:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 267 transitions. [2024-11-14 03:28:53,888 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 267 transitions. Word has length 36 [2024-11-14 03:28:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:53,888 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 267 transitions. [2024-11-14 03:28:53,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:28:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 267 transitions. [2024-11-14 03:28:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-14 03:28:53,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:53,893 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:53,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-11-14 03:28:54,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:54,094 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:54,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:54,094 INFO L85 PathProgramCache]: Analyzing trace with hash 904610812, now seen corresponding path program 1 times [2024-11-14 03:28:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:54,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825796052] [2024-11-14 03:28:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:54,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:54,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:54,097 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:54,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:28:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:54,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:28:54,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:54,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:54,292 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:54,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825796052] [2024-11-14 03:28:54,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825796052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:54,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:54,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:28:54,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790794431] [2024-11-14 03:28:54,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:54,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:28:54,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:54,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:28:54,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:28:54,294 INFO L87 Difference]: Start difference. First operand 231 states and 267 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:54,312 INFO L93 Difference]: Finished difference Result 235 states and 271 transitions. [2024-11-14 03:28:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:28:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2024-11-14 03:28:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:54,315 INFO L225 Difference]: With dead ends: 235 [2024-11-14 03:28:54,315 INFO L226 Difference]: Without dead ends: 235 [2024-11-14 03:28:54,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:28:54,317 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:54,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:28:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-14 03:28:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2024-11-14 03:28:54,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 155 states have (on average 1.6129032258064515) internal successors, (250), 218 states have internal predecessors, (250), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:28:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 271 transitions. [2024-11-14 03:28:54,327 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 271 transitions. Word has length 36 [2024-11-14 03:28:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:54,328 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 271 transitions. [2024-11-14 03:28:54,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 271 transitions. [2024-11-14 03:28:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-14 03:28:54,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:54,329 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:54,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Forceful destruction successful, exit code 0 [2024-11-14 03:28:54,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:54,530 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:54,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash 199719273, now seen corresponding path program 1 times [2024-11-14 03:28:54,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:54,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83368114] [2024-11-14 03:28:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:54,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:54,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:54,533 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:54,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:28:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:54,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:28:54,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:54,711 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:54,711 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:54,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83368114] [2024-11-14 03:28:54,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83368114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:54,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:54,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:28:54,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094877156] [2024-11-14 03:28:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:54,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:28:54,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:54,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:28:54,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:28:54,713 INFO L87 Difference]: Start difference. First operand 235 states and 271 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:54,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:28:54,737 INFO L93 Difference]: Finished difference Result 237 states and 273 transitions. [2024-11-14 03:28:54,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:28:54,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-14 03:28:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:28:54,739 INFO L225 Difference]: With dead ends: 237 [2024-11-14 03:28:54,739 INFO L226 Difference]: Without dead ends: 237 [2024-11-14 03:28:54,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:28:54,741 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 0 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:28:54,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 575 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:28:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-14 03:28:54,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-14 03:28:54,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 157 states have (on average 1.605095541401274) internal successors, (252), 220 states have internal predecessors, (252), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-14 03:28:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2024-11-14 03:28:54,752 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 40 [2024-11-14 03:28:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:28:54,752 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2024-11-14 03:28:54,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:28:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2024-11-14 03:28:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 03:28:54,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:28:54,753 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:28:54,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:28:54,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:54,959 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:28:54,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:28:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1343232752, now seen corresponding path program 1 times [2024-11-14 03:28:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:28:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521467284] [2024-11-14 03:28:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:28:54,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:28:54,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:28:54,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:28:54,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-11-14 03:28:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:28:55,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-14 03:28:55,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:28:55,379 INFO L349 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2024-11-14 03:28:55,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2024-11-14 03:28:55,856 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-14 03:28:55,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2024-11-14 03:28:56,130 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-14 03:28:56,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-14 03:28:56,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:28:56,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 13 [2024-11-14 03:28:57,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-11-14 03:28:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:28:57,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:28:57,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:28:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521467284] [2024-11-14 03:28:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521467284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:28:57,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:28:57,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-14 03:28:57,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732374834] [2024-11-14 03:28:57,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:28:57,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 03:28:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:28:57,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 03:28:57,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-14 03:28:57,100 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:00,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:29:02,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:29:06,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:29:08,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:29:11,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:29:13,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:29:13,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:13,841 INFO L93 Difference]: Finished difference Result 339 states and 375 transitions. [2024-11-14 03:29:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-14 03:29:13,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2024-11-14 03:29:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:13,843 INFO L225 Difference]: With dead ends: 339 [2024-11-14 03:29:13,843 INFO L226 Difference]: Without dead ends: 339 [2024-11-14 03:29:13,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2024-11-14 03:29:13,844 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 772 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 81 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:13,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 908 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1504 Invalid, 6 Unknown, 0 Unchecked, 15.8s Time] [2024-11-14 03:29:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-14 03:29:13,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 257. [2024-11-14 03:29:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 175 states have (on average 1.6057142857142856) internal successors, (281), 236 states have internal predecessors, (281), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-14 03:29:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 305 transitions. [2024-11-14 03:29:13,857 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 305 transitions. Word has length 42 [2024-11-14 03:29:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:13,857 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 305 transitions. [2024-11-14 03:29:13,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.769230769230769) internal successors, (36), 14 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:13,858 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 305 transitions. [2024-11-14 03:29:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 03:29:13,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:13,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:13,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2024-11-14 03:29:14,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:14,060 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:29:14,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1343232751, now seen corresponding path program 1 times [2024-11-14 03:29:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:14,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311464555] [2024-11-14 03:29:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:14,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:14,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:14,063 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:29:14,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:29:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:14,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-14 03:29:14,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:14,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:14,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 03:29:14,529 INFO L349 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2024-11-14 03:29:14,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2024-11-14 03:29:14,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:14,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-14 03:29:15,111 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 03:29:15,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-14 03:29:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:29:15,378 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:15,378 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:15,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311464555] [2024-11-14 03:29:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311464555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:15,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:15,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 03:29:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705129188] [2024-11-14 03:29:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:15,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-14 03:29:15,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-14 03:29:15,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-14 03:29:15,380 INFO L87 Difference]: Start difference. First operand 257 states and 305 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:19,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:19,390 INFO L93 Difference]: Finished difference Result 292 states and 333 transitions. [2024-11-14 03:29:19,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-14 03:29:19,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2024-11-14 03:29:19,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:19,392 INFO L225 Difference]: With dead ends: 292 [2024-11-14 03:29:19,392 INFO L226 Difference]: Without dead ends: 292 [2024-11-14 03:29:19,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2024-11-14 03:29:19,393 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 388 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:19,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 491 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-14 03:29:19,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-14 03:29:19,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 255. [2024-11-14 03:29:19,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 175 states have (on average 1.582857142857143) internal successors, (277), 234 states have internal predecessors, (277), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-14 03:29:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 301 transitions. [2024-11-14 03:29:19,401 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 301 transitions. Word has length 42 [2024-11-14 03:29:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:19,402 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 301 transitions. [2024-11-14 03:29:19,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:19,402 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 301 transitions. [2024-11-14 03:29:19,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 03:29:19,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:19,403 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:19,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:29:19,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:19,603 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:29:19,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1309477759, now seen corresponding path program 1 times [2024-11-14 03:29:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144468058] [2024-11-14 03:29:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:19,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:19,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:19,606 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:29:19,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:29:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:19,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 03:29:19,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:29:19,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:19,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:19,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144468058] [2024-11-14 03:29:19,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144468058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:19,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:19,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:29:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558982192] [2024-11-14 03:29:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:19,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:29:19,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:29:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:29:19,782 INFO L87 Difference]: Start difference. First operand 255 states and 301 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:29:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:19,804 INFO L93 Difference]: Finished difference Result 257 states and 302 transitions. [2024-11-14 03:29:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:29:19,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-11-14 03:29:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:19,806 INFO L225 Difference]: With dead ends: 257 [2024-11-14 03:29:19,806 INFO L226 Difference]: Without dead ends: 257 [2024-11-14 03:29:19,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:29:19,807 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:19,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 570 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:29:19,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-14 03:29:19,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-14 03:29:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 177 states have (on average 1.5706214689265536) internal successors, (278), 236 states have internal predecessors, (278), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-14 03:29:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 302 transitions. [2024-11-14 03:29:19,817 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 302 transitions. Word has length 43 [2024-11-14 03:29:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:19,818 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 302 transitions. [2024-11-14 03:29:19,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:29:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 302 transitions. [2024-11-14 03:29:19,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 03:29:19,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:19,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:19,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:29:20,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:20,020 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:29:20,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:20,020 INFO L85 PathProgramCache]: Analyzing trace with hash -36371021, now seen corresponding path program 1 times [2024-11-14 03:29:20,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:20,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470705824] [2024-11-14 03:29:20,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:20,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:20,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:20,023 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:29:20,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-14 03:29:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:20,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 03:29:20,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:20,552 INFO L349 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2024-11-14 03:29:20,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2024-11-14 03:29:21,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:29:21,545 INFO L349 Elim1Store]: treesize reduction 108, result has 32.9 percent of original size [2024-11-14 03:29:21,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 76 [2024-11-14 03:29:21,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-14 03:29:22,241 INFO L349 Elim1Store]: treesize reduction 108, result has 32.9 percent of original size [2024-11-14 03:29:22,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 46 treesize of output 76 [2024-11-14 03:29:22,867 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 74 treesize of output 55 [2024-11-14 03:29:23,175 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 74 treesize of output 55 [2024-11-14 03:29:23,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:23,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:23,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:23,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:23,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 16 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 53 [2024-11-14 03:29:23,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 53 [2024-11-14 03:29:24,734 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 65 treesize of output 33 [2024-11-14 03:29:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:29:25,199 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:25,199 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:25,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470705824] [2024-11-14 03:29:25,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470705824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:25,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:25,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-14 03:29:25,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837761279] [2024-11-14 03:29:25,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:25,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 03:29:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 03:29:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-14 03:29:25,201 INFO L87 Difference]: Start difference. First operand 257 states and 302 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:35,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:35,078 INFO L93 Difference]: Finished difference Result 342 states and 384 transitions. [2024-11-14 03:29:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 03:29:35,079 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-14 03:29:35,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:35,080 INFO L225 Difference]: With dead ends: 342 [2024-11-14 03:29:35,080 INFO L226 Difference]: Without dead ends: 342 [2024-11-14 03:29:35,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2024-11-14 03:29:35,081 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 541 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:35,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 1273 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-14 03:29:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-14 03:29:35,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 282. [2024-11-14 03:29:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 199 states have (on average 1.5326633165829147) internal successors, (305), 259 states have internal predecessors, (305), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (16), 12 states have call predecessors, (16), 11 states have call successors, (16) [2024-11-14 03:29:35,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 332 transitions. [2024-11-14 03:29:35,102 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 332 transitions. Word has length 45 [2024-11-14 03:29:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:35,102 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 332 transitions. [2024-11-14 03:29:35,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 332 transitions. [2024-11-14 03:29:35,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 03:29:35,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:35,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:35,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2024-11-14 03:29:35,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:35,304 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:29:35,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -36371020, now seen corresponding path program 1 times [2024-11-14 03:29:35,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:35,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392112042] [2024-11-14 03:29:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:35,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:35,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:35,308 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:29:35,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:29:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:35,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-14 03:29:35,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:35,726 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 03:29:35,892 INFO L349 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2024-11-14 03:29:35,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2024-11-14 03:29:36,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:29:36,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:29:36,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:36,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:36,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:36,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 46 treesize of output 56 [2024-11-14 03:29:37,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:37,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-14 03:29:37,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-14 03:29:37,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-14 03:29:37,718 INFO L349 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2024-11-14 03:29:37,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 44 [2024-11-14 03:29:37,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2024-11-14 03:29:38,119 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 16 treesize of output 11 [2024-11-14 03:29:38,140 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 57 treesize of output 42 [2024-11-14 03:29:38,390 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 57 treesize of output 42 [2024-11-14 03:29:38,397 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 16 treesize of output 11 [2024-11-14 03:29:39,418 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 56 treesize of output 28 [2024-11-14 03:29:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:29:39,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:39,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:39,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392112042] [2024-11-14 03:29:39,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392112042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:39,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:39,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-14 03:29:39,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357600672] [2024-11-14 03:29:39,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:39,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 03:29:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:39,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 03:29:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2024-11-14 03:29:39,956 INFO L87 Difference]: Start difference. First operand 282 states and 332 transitions. Second operand has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:49,571 INFO L93 Difference]: Finished difference Result 367 states and 408 transitions. [2024-11-14 03:29:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 03:29:49,572 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-14 03:29:49,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:49,573 INFO L225 Difference]: With dead ends: 367 [2024-11-14 03:29:49,574 INFO L226 Difference]: Without dead ends: 367 [2024-11-14 03:29:49,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 03:29:49,575 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 479 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:49,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1150 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-14 03:29:49,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-14 03:29:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 311. [2024-11-14 03:29:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 222 states have (on average 1.572072072072072) internal successors, (349), 285 states have internal predecessors, (349), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-14 03:29:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 382 transitions. [2024-11-14 03:29:49,587 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 382 transitions. Word has length 45 [2024-11-14 03:29:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:49,588 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 382 transitions. [2024-11-14 03:29:49,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:29:49,588 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 382 transitions. [2024-11-14 03:29:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 03:29:49,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:49,588 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:49,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:29:49,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:49,789 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:29:49,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:49,789 INFO L85 PathProgramCache]: Analyzing trace with hash -823443958, now seen corresponding path program 1 times [2024-11-14 03:29:49,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:49,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888465802] [2024-11-14 03:29:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:49,790 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:49,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:49,791 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:29:49,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 (23)] Waiting until timeout for monitored process [2024-11-14 03:29:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:50,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:29:50,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:50,311 INFO L349 Elim1Store]: treesize reduction 72, result has 32.1 percent of original size [2024-11-14 03:29:50,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 52 [2024-11-14 03:29:50,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:50,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:50,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:50,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 30 treesize of output 37 [2024-11-14 03:29:50,823 INFO L349 Elim1Store]: treesize reduction 48, result has 31.4 percent of original size [2024-11-14 03:29:50,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 44 [2024-11-14 03:29:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:29:51,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:29:51,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:29:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888465802] [2024-11-14 03:29:51,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888465802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:29:51,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:29:51,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 03:29:51,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106424568] [2024-11-14 03:29:51,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:29:51,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 03:29:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:29:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 03:29:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:29:51,102 INFO L87 Difference]: Start difference. First operand 311 states and 382 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 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 03:29:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:29:53,228 INFO L93 Difference]: Finished difference Result 330 states and 386 transitions. [2024-11-14 03:29:53,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:29:53,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 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 44 [2024-11-14 03:29:53,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:29:53,235 INFO L225 Difference]: With dead ends: 330 [2024-11-14 03:29:53,236 INFO L226 Difference]: Without dead ends: 330 [2024-11-14 03:29:53,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-14 03:29:53,237 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 189 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:29:53,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 714 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 748 Invalid, 1 Unknown, 0 Unchecked, 1.8s Time] [2024-11-14 03:29:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-14 03:29:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 310. [2024-11-14 03:29:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 222 states have (on average 1.563063063063063) internal successors, (347), 284 states have internal predecessors, (347), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-14 03:29:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 380 transitions. [2024-11-14 03:29:53,251 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 380 transitions. Word has length 44 [2024-11-14 03:29:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:29:53,251 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 380 transitions. [2024-11-14 03:29:53,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 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 03:29:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 380 transitions. [2024-11-14 03:29:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 03:29:53,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:29:53,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:29:53,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 (23)] Forceful destruction successful, exit code 0 [2024-11-14 03:29:53,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:53,456 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:29:53,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:29:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash -823443957, now seen corresponding path program 1 times [2024-11-14 03:29:53,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:29:53,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043827256] [2024-11-14 03:29:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:29:53,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:29:53,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:29:53,461 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:29:53,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-14 03:29:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:29:53,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-14 03:29:53,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:29:54,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:54,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 11 [2024-11-14 03:29:54,158 INFO L349 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2024-11-14 03:29:54,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2024-11-14 03:29:54,656 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 03:29:54,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-14 03:29:55,009 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-14 03:29:55,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 03:29:56,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:29:56,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:29:56,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-14 03:29:56,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-14 03:29:56,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:56,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 91 [2024-11-14 03:29:59,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:29:59,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 66 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 103 [2024-11-14 03:29:59,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:29:59,409 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 131 treesize of output 103 [2024-11-14 03:30:02,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:30:02,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 110 treesize of output 42 [2024-11-14 03:30:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:30:02,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:02,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043827256] [2024-11-14 03:30:02,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043827256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:02,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:02,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-14 03:30:02,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891938656] [2024-11-14 03:30:02,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:02,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-14 03:30:02,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-14 03:30:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=229, Unknown=2, NotChecked=0, Total=272 [2024-11-14 03:30:02,147 INFO L87 Difference]: Start difference. First operand 310 states and 380 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:30:05,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:07,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:14,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:16,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:22,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:29,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:31,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:34,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:35,996 INFO L93 Difference]: Finished difference Result 359 states and 422 transitions. [2024-11-14 03:30:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-14 03:30:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-14 03:30:35,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:35,998 INFO L225 Difference]: With dead ends: 359 [2024-11-14 03:30:35,998 INFO L226 Difference]: Without dead ends: 359 [2024-11-14 03:30:35,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=188, Invalid=928, Unknown=6, NotChecked=0, Total=1122 [2024-11-14 03:30:36,000 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 607 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 64 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:36,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 669 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1554 Invalid, 25 Unknown, 0 Unchecked, 23.4s Time] [2024-11-14 03:30:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-14 03:30:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 309. [2024-11-14 03:30:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 222 states have (on average 1.554054054054054) internal successors, (345), 283 states have internal predecessors, (345), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 13 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-14 03:30:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 378 transitions. [2024-11-14 03:30:36,009 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 378 transitions. Word has length 44 [2024-11-14 03:30:36,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:36,009 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 378 transitions. [2024-11-14 03:30:36,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:30:36,009 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 378 transitions. [2024-11-14 03:30:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 03:30:36,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:36,010 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:30:36,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2024-11-14 03:30:36,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:30:36,214 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:30:36,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:36,214 INFO L85 PathProgramCache]: Analyzing trace with hash -592813644, now seen corresponding path program 1 times [2024-11-14 03:30:36,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:30:36,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525576675] [2024-11-14 03:30:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:36,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:30:36,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:30:36,219 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:30:36,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:30:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:36,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-14 03:30:36,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:36,900 INFO L349 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2024-11-14 03:30:36,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 69 [2024-11-14 03:30:37,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:30:37,724 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 03:30:38,234 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 46 treesize of output 37 [2024-11-14 03:30:38,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:30:38,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,580 INFO L349 Elim1Store]: treesize reduction 70, result has 17.6 percent of original size [2024-11-14 03:30:38,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 51 treesize of output 82 [2024-11-14 03:30:38,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:38,963 INFO L349 Elim1Store]: treesize reduction 46, result has 22.0 percent of original size [2024-11-14 03:30:38,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 46 [2024-11-14 03:30:39,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:39,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:39,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:39,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:39,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:30:39,884 INFO L349 Elim1Store]: treesize reduction 66, result has 33.3 percent of original size [2024-11-14 03:30:39,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 69 [2024-11-14 03:30:41,092 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 03:30:41,093 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 70 [2024-11-14 03:30:41,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 03:30:41,872 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 03:30:41,872 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 70 [2024-11-14 03:30:41,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-14 03:30:43,836 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 7 treesize of output 3 [2024-11-14 03:30:45,151 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-14 03:30:45,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 42 [2024-11-14 03:30:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:30:45,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:45,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:30:45,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525576675] [2024-11-14 03:30:45,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525576675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:45,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:45,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-14 03:30:45,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885076659] [2024-11-14 03:30:45,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:45,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 03:30:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:30:45,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 03:30:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2024-11-14 03:30:45,730 INFO L87 Difference]: Start difference. First operand 309 states and 378 transitions. Second operand has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:30:50,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:30:54,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:31:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:31:07,720 INFO L93 Difference]: Finished difference Result 357 states and 401 transitions. [2024-11-14 03:31:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-14 03:31:07,721 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2024-11-14 03:31:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:31:07,722 INFO L225 Difference]: With dead ends: 357 [2024-11-14 03:31:07,722 INFO L226 Difference]: Without dead ends: 357 [2024-11-14 03:31:07,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2024-11-14 03:31:07,723 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 424 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:31:07,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1608 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2281 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2024-11-14 03:31:07,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-14 03:31:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 312. [2024-11-14 03:31:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 225 states have (on average 1.551111111111111) internal successors, (349), 285 states have internal predecessors, (349), 14 states have call successors, (14), 12 states have call predecessors, (14), 14 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-14 03:31:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 382 transitions. [2024-11-14 03:31:07,735 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 382 transitions. Word has length 47 [2024-11-14 03:31:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:31:07,735 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 382 transitions. [2024-11-14 03:31:07,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:31:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 382 transitions. [2024-11-14 03:31:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 03:31:07,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:31:07,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:31:07,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:31:07,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:31:07,940 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:31:07,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:31:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash -592813643, now seen corresponding path program 1 times [2024-11-14 03:31:07,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:31:07,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331266227] [2024-11-14 03:31:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:31:07,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:31:07,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:31:07,943 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:31:07,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:31:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:31:08,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-14 03:31:08,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:31:08,361 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 03:31:08,561 INFO L349 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2024-11-14 03:31:08,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2024-11-14 03:31:09,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:31:09,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:31:09,458 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 03:31:09,544 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 27 treesize of output 11 [2024-11-14 03:31:10,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-14 03:31:10,293 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 46 treesize of output 37 [2024-11-14 03:31:10,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:10,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:10,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:10,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:10,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:10,606 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:31:10,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 46 treesize of output 72 [2024-11-14 03:31:10,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:10,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:10,651 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 03:31:10,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-14 03:31:11,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:11,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:11,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:11,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:11,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:11,047 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:31:11,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31 [2024-11-14 03:31:11,073 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 03:31:11,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-14 03:31:12,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:12,129 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 03:31:12,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-14 03:31:12,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:12,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:12,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:12,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:12,251 INFO L349 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2024-11-14 03:31:12,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 52 treesize of output 62 [2024-11-14 03:31:13,574 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 03:31:13,575 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 86 [2024-11-14 03:31:13,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-14 03:31:14,476 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 03:31:14,476 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 113 treesize of output 86 [2024-11-14 03:31:14,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-14 03:31:16,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-14 03:31:19,328 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-14 03:31:19,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 54 [2024-11-14 03:31:19,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2024-11-14 03:31:19,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:31:19,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2024-11-14 03:31:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:31:20,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:31:20,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:31:20,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331266227] [2024-11-14 03:31:20,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331266227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:31:20,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:31:20,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-14 03:31:20,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673531979] [2024-11-14 03:31:20,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:31:20,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-14 03:31:20,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:31:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-14 03:31:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2024-11-14 03:31:20,183 INFO L87 Difference]: Start difference. First operand 312 states and 382 transitions. Second operand has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:31:23,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:31:26,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:31:31,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:31:35,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:31:37,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:31:41,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:31:43,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:32:14,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:32:18,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:32:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:32:24,289 INFO L93 Difference]: Finished difference Result 336 states and 376 transitions. [2024-11-14 03:32:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-14 03:32:24,289 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2024-11-14 03:32:24,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:32:24,290 INFO L225 Difference]: With dead ends: 336 [2024-11-14 03:32:24,290 INFO L226 Difference]: Without dead ends: 336 [2024-11-14 03:32:24,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=276, Invalid=2265, Unknown=9, NotChecked=0, Total=2550 [2024-11-14 03:32:24,291 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 509 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 3078 mSolverCounterSat, 57 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 3147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3078 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:32:24,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1357 Invalid, 3147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3078 Invalid, 12 Unknown, 0 Unchecked, 31.6s Time] [2024-11-14 03:32:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-14 03:32:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 291. [2024-11-14 03:32:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 208 states have (on average 1.5144230769230769) internal successors, (315), 266 states have internal predecessors, (315), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-14 03:32:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 343 transitions. [2024-11-14 03:32:24,299 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 343 transitions. Word has length 47 [2024-11-14 03:32:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:32:24,299 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 343 transitions. [2024-11-14 03:32:24,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:32:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 343 transitions. [2024-11-14 03:32:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 03:32:24,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:32:24,300 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:32:24,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:32:24,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:24,501 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:32:24,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:32:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1055657141, now seen corresponding path program 1 times [2024-11-14 03:32:24,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:32:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455777198] [2024-11-14 03:32:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:32:24,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:24,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:32:24,506 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:32:24,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-14 03:32:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:32:24,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 03:32:24,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:32:24,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:32:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:32:25,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:32:25,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:32:25,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455777198] [2024-11-14 03:32:25,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455777198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:32:25,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:32:25,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:32:25,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833646971] [2024-11-14 03:32:25,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:32:25,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:32:25,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:32:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:32:25,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:32:25,005 INFO L87 Difference]: Start difference. First operand 291 states and 343 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:32:26,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:32:26,349 INFO L93 Difference]: Finished difference Result 301 states and 342 transitions. [2024-11-14 03:32:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 03:32:26,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-14 03:32:26,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:32:26,351 INFO L225 Difference]: With dead ends: 301 [2024-11-14 03:32:26,351 INFO L226 Difference]: Without dead ends: 301 [2024-11-14 03:32:26,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:32:26,352 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 33 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:32:26,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 715 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 03:32:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-14 03:32:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 290. [2024-11-14 03:32:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 208 states have (on average 1.5) internal successors, (312), 265 states have internal predecessors, (312), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-14 03:32:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 340 transitions. [2024-11-14 03:32:26,369 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 340 transitions. Word has length 46 [2024-11-14 03:32:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:32:26,371 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 340 transitions. [2024-11-14 03:32:26,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:32:26,371 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 340 transitions. [2024-11-14 03:32:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-14 03:32:26,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:32:26,375 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:32:26,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-11-14 03:32:26,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:26,576 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:32:26,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:32:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1055657140, now seen corresponding path program 1 times [2024-11-14 03:32:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:32:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715365250] [2024-11-14 03:32:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:32:26,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:26,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:32:26,579 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:32:26,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-14 03:32:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:32:26,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-14 03:32:26,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:32:26,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-14 03:32:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:32:27,207 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:32:27,207 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:32:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715365250] [2024-11-14 03:32:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715365250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:32:27,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:32:27,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:32:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440357077] [2024-11-14 03:32:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:32:27,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 03:32:27,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:32:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 03:32:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:32:27,208 INFO L87 Difference]: Start difference. First operand 290 states and 340 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:32:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:32:28,671 INFO L93 Difference]: Finished difference Result 299 states and 340 transitions. [2024-11-14 03:32:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:32:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-14 03:32:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:32:28,673 INFO L225 Difference]: With dead ends: 299 [2024-11-14 03:32:28,673 INFO L226 Difference]: Without dead ends: 299 [2024-11-14 03:32:28,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:32:28,674 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 29 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:32:28,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 746 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 03:32:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-14 03:32:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 290. [2024-11-14 03:32:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 208 states have (on average 1.4903846153846154) internal successors, (310), 265 states have internal predecessors, (310), 12 states have call successors, (12), 11 states have call predecessors, (12), 12 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-14 03:32:28,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 338 transitions. [2024-11-14 03:32:28,691 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 338 transitions. Word has length 46 [2024-11-14 03:32:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:32:28,691 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 338 transitions. [2024-11-14 03:32:28,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:32:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 338 transitions. [2024-11-14 03:32:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 03:32:28,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:32:28,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:32:28,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-14 03:32:28,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:28,892 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:32:28,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:32:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1331217032, now seen corresponding path program 1 times [2024-11-14 03:32:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:32:28,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052006827] [2024-11-14 03:32:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:32:28,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:28,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:32:28,896 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:32:28,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-14 03:32:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:32:29,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-14 03:32:29,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:32:29,866 INFO L349 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2024-11-14 03:32:29,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2024-11-14 03:32:30,551 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-14 03:32:30,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-14 03:32:30,954 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-14 03:32:30,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-14 03:32:31,473 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 03:32:31,942 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 60 treesize of output 11 [2024-11-14 03:32:32,508 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 16 treesize of output 11 [2024-11-14 03:32:32,676 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 16 treesize of output 11 [2024-11-14 03:32:32,853 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 16 treesize of output 11 [2024-11-14 03:32:33,057 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 16 treesize of output 11 [2024-11-14 03:32:34,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2024-11-14 03:32:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:32:34,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:32:34,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:32:34,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052006827] [2024-11-14 03:32:34,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052006827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:32:34,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:32:34,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-14 03:32:34,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412403161] [2024-11-14 03:32:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:32:34,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 03:32:34,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:32:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 03:32:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-14 03:32:34,536 INFO L87 Difference]: Start difference. First operand 290 states and 338 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:32:39,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:32:42,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:32:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:32:51,576 INFO L93 Difference]: Finished difference Result 377 states and 427 transitions. [2024-11-14 03:32:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-14 03:32:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2024-11-14 03:32:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:32:51,579 INFO L225 Difference]: With dead ends: 377 [2024-11-14 03:32:51,579 INFO L226 Difference]: Without dead ends: 377 [2024-11-14 03:32:51,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=226, Invalid=1334, Unknown=0, NotChecked=0, Total=1560 [2024-11-14 03:32:51,579 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 811 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 67 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:32:51,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1058 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1877 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2024-11-14 03:32:51,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-14 03:32:51,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 317. [2024-11-14 03:32:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 236 states have (on average 1.4872881355932204) internal successors, (351), 291 states have internal predecessors, (351), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-14 03:32:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 381 transitions. [2024-11-14 03:32:51,589 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 381 transitions. Word has length 49 [2024-11-14 03:32:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:32:51,589 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 381 transitions. [2024-11-14 03:32:51,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 18 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:32:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 381 transitions. [2024-11-14 03:32:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 03:32:51,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:32:51,591 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:32:51,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-14 03:32:51,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:51,792 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:32:51,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:32:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1331217031, now seen corresponding path program 1 times [2024-11-14 03:32:51,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:32:51,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982762337] [2024-11-14 03:32:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:32:51,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:32:51,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:32:51,795 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:32:51,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:32:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:32:52,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-14 03:32:52,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:32:52,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:32:52,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-14 03:32:52,757 INFO L349 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2024-11-14 03:32:52,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2024-11-14 03:32:53,352 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-14 03:32:53,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-14 03:32:53,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-14 03:32:53,745 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-14 03:32:53,746 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 03:32:53,841 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-14 03:32:53,841 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 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-14 03:32:54,281 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 03:32:54,340 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 03:32:54,784 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 60 treesize of output 11 [2024-11-14 03:32:54,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 11 [2024-11-14 03:32:55,269 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 16 treesize of output 11 [2024-11-14 03:32:55,287 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 16 treesize of output 11 [2024-11-14 03:32:55,453 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 16 treesize of output 11 [2024-11-14 03:32:55,466 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 16 treesize of output 11 [2024-11-14 03:32:55,648 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 16 treesize of output 11 [2024-11-14 03:32:55,707 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 16 treesize of output 11 [2024-11-14 03:32:55,820 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 16 treesize of output 11 [2024-11-14 03:32:55,836 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 16 treesize of output 11 [2024-11-14 03:32:56,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 [2024-11-14 03:32:56,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 [2024-11-14 03:32:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:32:57,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:32:57,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:32:57,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982762337] [2024-11-14 03:32:57,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982762337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:32:57,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:32:57,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-14 03:32:57,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992920161] [2024-11-14 03:32:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:32:57,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 03:32:57,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:32:57,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 03:32:57,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2024-11-14 03:32:57,499 INFO L87 Difference]: Start difference. First operand 317 states and 381 transitions. Second operand has 19 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:33:09,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:33:19,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:33:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:33:21,159 INFO L93 Difference]: Finished difference Result 437 states and 495 transitions. [2024-11-14 03:33:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-14 03:33:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2024-11-14 03:33:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:33:21,161 INFO L225 Difference]: With dead ends: 437 [2024-11-14 03:33:21,161 INFO L226 Difference]: Without dead ends: 437 [2024-11-14 03:33:21,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=261, Invalid=1461, Unknown=0, NotChecked=0, Total=1722 [2024-11-14 03:33:21,163 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 756 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:33:21,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 964 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 2645 Invalid, 1 Unknown, 0 Unchecked, 16.5s Time] [2024-11-14 03:33:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-11-14 03:33:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 316. [2024-11-14 03:33:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 236 states have (on average 1.4703389830508475) internal successors, (347), 290 states have internal predecessors, (347), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-14 03:33:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 377 transitions. [2024-11-14 03:33:21,172 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 377 transitions. Word has length 49 [2024-11-14 03:33:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:33:21,173 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 377 transitions. [2024-11-14 03:33:21,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.6875) internal successors, (43), 17 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:33:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 377 transitions. [2024-11-14 03:33:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 03:33:21,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:33:21,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:33:21,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:33:21,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:33:21,375 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:33:21,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:33:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash 899269049, now seen corresponding path program 1 times [2024-11-14 03:33:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:33:21,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016830455] [2024-11-14 03:33:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:33:21,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:33:21,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:33:21,380 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:33:21,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:33:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:33:21,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:33:21,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:33:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:33:21,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:33:21,749 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:33:21,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016830455] [2024-11-14 03:33:21,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016830455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:33:21,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:33:21,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:33:21,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477323098] [2024-11-14 03:33:21,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:33:21,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:33:21,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:33:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:33:21,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:33:21,751 INFO L87 Difference]: Start difference. First operand 316 states and 377 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:33:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:33:22,512 INFO L93 Difference]: Finished difference Result 335 states and 395 transitions. [2024-11-14 03:33:22,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:33:22,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-14 03:33:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:33:22,514 INFO L225 Difference]: With dead ends: 335 [2024-11-14 03:33:22,514 INFO L226 Difference]: Without dead ends: 335 [2024-11-14 03:33:22,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:33:22,515 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 18 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 03:33:22,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 509 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 03:33:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-14 03:33:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 328. [2024-11-14 03:33:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 247 states have (on average 1.4696356275303644) internal successors, (363), 300 states have internal predecessors, (363), 14 states have call successors, (14), 12 states have call predecessors, (14), 13 states have return successors, (18), 15 states have call predecessors, (18), 14 states have call successors, (18) [2024-11-14 03:33:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 395 transitions. [2024-11-14 03:33:22,523 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 395 transitions. Word has length 52 [2024-11-14 03:33:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:33:22,524 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 395 transitions. [2024-11-14 03:33:22,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-14 03:33:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 395 transitions. [2024-11-14 03:33:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 03:33:22,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:33:22,525 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:33:22,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:33:22,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:33:22,725 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:33:22,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:33:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash 899269050, now seen corresponding path program 1 times [2024-11-14 03:33:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:33:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151420469] [2024-11-14 03:33:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:33:22,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:33:22,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:33:22,728 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:33:22,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-11-14 03:33:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:33:23,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-14 03:33:23,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:33:23,541 INFO L349 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2024-11-14 03:33:23,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 59 [2024-11-14 03:33:24,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:33:24,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-14 03:33:24,550 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 03:33:24,622 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 27 treesize of output 11 [2024-11-14 03:33:25,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-14 03:33:25,415 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 46 treesize of output 37 [2024-11-14 03:33:25,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:25,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:25,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:25,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:25,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:25,772 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:33:25,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 46 treesize of output 72 [2024-11-14 03:33:26,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:26,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:26,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:26,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:26,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:26,308 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-14 03:33:26,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 16 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 31 [2024-11-14 03:33:27,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:27,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:27,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:27,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:27,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:33:27,615 INFO L349 Elim1Store]: treesize reduction 50, result has 36.7 percent of original size [2024-11-14 03:33:27,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 52 treesize of output 62 [2024-11-14 03:33:29,217 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 03:33:29,218 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 79 [2024-11-14 03:33:29,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-14 03:33:30,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-14 03:33:30,309 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-14 03:33:30,309 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 104 treesize of output 79 [2024-11-14 03:33:35,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2024-11-14 03:33:35,099 INFO L349 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2024-11-14 03:33:35,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 41 [2024-11-14 03:33:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:33:36,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:33:36,417 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:33:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151420469] [2024-11-14 03:33:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151420469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:33:36,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:33:36,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-14 03:33:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710846601] [2024-11-14 03:33:36,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:33:36,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-14 03:33:36,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:33:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-14 03:33:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2024-11-14 03:33:36,419 INFO L87 Difference]: Start difference. First operand 328 states and 395 transitions. Second operand has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:33:42,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:33:47,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:34:05,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:34:05,624 INFO L93 Difference]: Finished difference Result 358 states and 411 transitions. [2024-11-14 03:34:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-14 03:34:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-14 03:34:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:34:05,626 INFO L225 Difference]: With dead ends: 358 [2024-11-14 03:34:05,626 INFO L226 Difference]: Without dead ends: 358 [2024-11-14 03:34:05,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=237, Invalid=2019, Unknown=0, NotChecked=0, Total=2256 [2024-11-14 03:34:05,628 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 236 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:34:05,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 2159 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2225 Invalid, 2 Unknown, 0 Unchecked, 16.5s Time] [2024-11-14 03:34:05,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-14 03:34:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 317. [2024-11-14 03:34:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 238 states have (on average 1.4579831932773109) internal successors, (347), 291 states have internal predecessors, (347), 13 states have call successors, (13), 11 states have call predecessors, (13), 12 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-14 03:34:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 377 transitions. [2024-11-14 03:34:05,636 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 377 transitions. Word has length 52 [2024-11-14 03:34:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:34:05,637 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 377 transitions. [2024-11-14 03:34:05,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:34:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 377 transitions. [2024-11-14 03:34:05,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 03:34:05,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:34:05,638 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:34:05,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2024-11-14 03:34:05,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:34:05,839 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:34:05,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:34:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash 600690841, now seen corresponding path program 1 times [2024-11-14 03:34:05,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:34:05,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141123938] [2024-11-14 03:34:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:34:05,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:34:05,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:34:05,842 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:34:05,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:34:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:34:06,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-14 03:34:06,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:34:06,915 INFO L349 Elim1Store]: treesize reduction 66, result has 34.0 percent of original size [2024-11-14 03:34:06,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 69 [2024-11-14 03:34:07,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:34:08,060 INFO L349 Elim1Store]: treesize reduction 136, result has 32.0 percent of original size [2024-11-14 03:34:08,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 49 treesize of output 97 [2024-11-14 03:34:08,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:34:08,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:34:08,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-14 03:34:08,408 INFO L349 Elim1Store]: treesize reduction 27, result has 22.9 percent of original size [2024-11-14 03:34:08,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 37 [2024-11-14 03:34:09,176 INFO L349 Elim1Store]: treesize reduction 212, result has 26.1 percent of original size [2024-11-14 03:34:09,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 56 treesize of output 113 [2024-11-14 03:34:10,640 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 03:34:10,640 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 1 case distinctions, treesize of input 125 treesize of output 71 [2024-11-14 03:34:10,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-14 03:34:11,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 14 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 58 [2024-11-14 03:34:11,931 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-14 03:34:11,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 14 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 74 [2024-11-14 03:34:13,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 68 [2024-11-14 03:34:13,256 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-14 03:34:13,256 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 1 case distinctions, treesize of input 129 treesize of output 107 [2024-11-14 03:34:13,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 68 [2024-11-14 03:34:13,761 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-14 03:34:13,761 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 1 case distinctions, treesize of input 129 treesize of output 107 [2024-11-14 03:34:14,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 68 [2024-11-14 03:34:14,304 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-14 03:34:14,305 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 1 case distinctions, treesize of input 129 treesize of output 107 [2024-11-14 03:34:14,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 68 [2024-11-14 03:34:14,814 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-14 03:34:14,814 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 1 case distinctions, treesize of input 129 treesize of output 107 [2024-11-14 03:34:17,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 54 [2024-11-14 03:34:19,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-14 03:34:19,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 184 treesize of output 160 [2024-11-14 03:34:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:34:20,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:34:20,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 03:34:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141123938] [2024-11-14 03:34:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141123938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:34:20,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:34:20,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-14 03:34:20,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403051582] [2024-11-14 03:34:20,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:34:20,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-14 03:34:20,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 03:34:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-14 03:34:20,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2024-11-14 03:34:20,841 INFO L87 Difference]: Start difference. First operand 317 states and 377 transitions. Second operand has 24 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:34:27,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:34:31,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:34:51,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:34:55,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:34:59,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-14 03:35:01,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:35:01,910 INFO L93 Difference]: Finished difference Result 400 states and 442 transitions. [2024-11-14 03:35:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-14 03:35:01,911 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2024-11-14 03:35:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:35:01,913 INFO L225 Difference]: With dead ends: 400 [2024-11-14 03:35:01,913 INFO L226 Difference]: Without dead ends: 400 [2024-11-14 03:35:01,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=294, Invalid=2058, Unknown=0, NotChecked=0, Total=2352 [2024-11-14 03:35:01,914 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 679 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 86 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2024-11-14 03:35:01,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1504 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2616 Invalid, 3 Unknown, 0 Unchecked, 26.9s Time] [2024-11-14 03:35:01,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-14 03:35:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 332. [2024-11-14 03:35:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 250 states have (on average 1.444) internal successors, (361), 304 states have internal predecessors, (361), 14 states have call successors, (14), 13 states have call predecessors, (14), 14 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-14 03:35:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 394 transitions. [2024-11-14 03:35:01,926 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 394 transitions. Word has length 51 [2024-11-14 03:35:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:35:01,926 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 394 transitions. [2024-11-14 03:35:01,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.142857142857143) internal successors, (45), 20 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:35:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 394 transitions. [2024-11-14 03:35:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 03:35:01,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:35:01,928 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:35:01,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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 03:35:02,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:35:02,128 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-14 03:35:02,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:35:02,129 INFO L85 PathProgramCache]: Analyzing trace with hash 600690842, now seen corresponding path program 1 times [2024-11-14 03:35:02,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 03:35:02,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372250341] [2024-11-14 03:35:02,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:35:02,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:35:02,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 03:35:02,131 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-14 03:35:02,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Waiting until timeout for monitored process [2024-11-14 03:35:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:35:02,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 03:35:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:35:03,465 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 03:35:03,465 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 03:35:03,466 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 80 remaining) [2024-11-14 03:35:03,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 80 remaining) [2024-11-14 03:35:03,468 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 80 remaining) [2024-11-14 03:35:03,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 80 remaining) [2024-11-14 03:35:03,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 80 remaining) [2024-11-14 03:35:03,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (74 of 80 remaining) [2024-11-14 03:35:03,469 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (73 of 80 remaining) [2024-11-14 03:35:03,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (72 of 80 remaining) [2024-11-14 03:35:03,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 80 remaining) [2024-11-14 03:35:03,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 80 remaining) [2024-11-14 03:35:03,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 80 remaining) [2024-11-14 03:35:03,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 80 remaining) [2024-11-14 03:35:03,470 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 80 remaining) [2024-11-14 03:35:03,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 80 remaining) [2024-11-14 03:35:03,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 80 remaining) [2024-11-14 03:35:03,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 80 remaining) [2024-11-14 03:35:03,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 80 remaining) [2024-11-14 03:35:03,471 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 80 remaining) [2024-11-14 03:35:03,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 80 remaining) [2024-11-14 03:35:03,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 80 remaining) [2024-11-14 03:35:03,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 80 remaining) [2024-11-14 03:35:03,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 80 remaining) [2024-11-14 03:35:03,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 80 remaining) [2024-11-14 03:35:03,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 80 remaining) [2024-11-14 03:35:03,472 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 80 remaining) [2024-11-14 03:35:03,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 80 remaining) [2024-11-14 03:35:03,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 80 remaining) [2024-11-14 03:35:03,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (18 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (17 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (16 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (13 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (12 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (11 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (10 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (9 of 80 remaining) [2024-11-14 03:35:03,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (8 of 80 remaining) [2024-11-14 03:35:03,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 80 remaining) [2024-11-14 03:35:03,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 80 remaining) [2024-11-14 03:35:03,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 80 remaining) [2024-11-14 03:35:03,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 80 remaining) [2024-11-14 03:35:03,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (3 of 80 remaining) [2024-11-14 03:35:03,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (2 of 80 remaining) [2024-11-14 03:35:03,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE (1 of 80 remaining) [2024-11-14 03:35:03,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK (0 of 80 remaining) [2024-11-14 03:35:03,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/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)] Ended with exit code 0 [2024-11-14 03:35:03,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 03:35:03,684 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:35:03,728 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:35:03,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:35:03 BoogieIcfgContainer [2024-11-14 03:35:03,732 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:35:03,733 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:35:03,733 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:35:03,733 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:35:03,734 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:28:35" (3/4) ... [2024-11-14 03:35:03,735 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 03:35:03,795 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:35:03,795 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:35:03,796 INFO L158 Benchmark]: Toolchain (without parser) took 390346.64ms. Allocated memory was 117.4MB in the beginning and 327.2MB in the end (delta: 209.7MB). Free memory was 94.5MB in the beginning and 215.6MB in the end (delta: -121.1MB). Peak memory consumption was 88.7MB. Max. memory is 16.1GB. [2024-11-14 03:35:03,796 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:35:03,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 970.79ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 63.5MB in the end (delta: 30.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-14 03:35:03,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.77ms. Allocated memory is still 117.4MB. Free memory was 63.5MB in the beginning and 60.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:35:03,797 INFO L158 Benchmark]: Boogie Preprocessor took 52.45ms. Allocated memory is still 117.4MB. Free memory was 60.7MB in the beginning and 58.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:35:03,797 INFO L158 Benchmark]: RCFGBuilder took 1457.94ms. Allocated memory is still 117.4MB. Free memory was 58.1MB in the beginning and 59.1MB in the end (delta: -976.8kB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2024-11-14 03:35:03,797 INFO L158 Benchmark]: TraceAbstraction took 387732.81ms. Allocated memory was 117.4MB in the beginning and 327.2MB in the end (delta: 209.7MB). Free memory was 59.1MB in the beginning and 219.7MB in the end (delta: -160.5MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2024-11-14 03:35:03,797 INFO L158 Benchmark]: Witness Printer took 62.46ms. Allocated memory is still 327.2MB. Free memory was 219.7MB in the beginning and 215.6MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:35:03,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 970.79ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 63.5MB in the end (delta: 30.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.77ms. Allocated memory is still 117.4MB. Free memory was 63.5MB in the beginning and 60.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.45ms. Allocated memory is still 117.4MB. Free memory was 60.7MB in the beginning and 58.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1457.94ms. Allocated memory is still 117.4MB. Free memory was 58.1MB in the beginning and 59.1MB in the end (delta: -976.8kB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * TraceAbstraction took 387732.81ms. Allocated memory was 117.4MB in the beginning and 327.2MB in the end (delta: 209.7MB). Free memory was 59.1MB in the beginning and 219.7MB in the end (delta: -160.5MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Witness Printer took 62.46ms. Allocated memory is still 327.2MB. Free memory was 219.7MB in the beginning and 215.6MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L820-L823] static int (*dispatch_type[])(struct hid_parser *parser, struct hid_item *item) = { hid_parser_main }; [L859] struct hid_device dev; VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L867] CALL entry_point() [L861] CALL probe_23(&dev) [L842] int ret = - -3; VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, ret=3] [L843] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L843] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, ret=3] [L843] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L844] COND FALSE !(p==0) VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, p={26:0}, ret=3] [L846] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [\old(list)={26:4}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L540] list->next = list VAL [\old(list)={26:4}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, list={26:4}] [L541] list->prev = list VAL [\old(list)={26:4}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L846] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, p={26:0}, ret=3] [L847] dev->report_enum = p VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, p={26:0}, ret=3] [L848] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}, parser={18:0}] [L818] parser->device = device VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}, parser={18:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=1610612738, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}, parser={18:0}] [L824] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [dev={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [dev={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [dev={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L785] return 0; VAL [\result=0, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L824] RET, EXPR fetch_item(&item) [L824] COND TRUE fetch_item(&item)!=-1 [L825] EXPR item.type VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}, parser={18:0}] [L825] EXPR dispatch_type[item.type] VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={51:0}, ldv_global_msg_list={1:0}, parser={18:0}] [L825] CALL dispatch_type[item.type](parser, &item) [L800] EXPR parser->device VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, parser={18:0}] [L800] EXPR parser->report_id VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [dev={3:0}, dispatch_type={2:0}, id=1610612738, ldv_global_msg_list={1:0}] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [dev={3:0}, dispatch_type={2:0}, id=1610612738, ldv_global_msg_list={1:0}, report_enum={26:0}] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 866]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 205 locations, 80 error locations. Started 1 CEGAR loops. OverallTime: 387.6s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 287.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 mSolverCounterUnknown, 8094 SdHoareTripleChecker+Valid, 188.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8049 mSDsluCounter, 26772 SdHoareTripleChecker+Invalid, 180.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 577 IncrementalHoareTripleChecker+Unchecked, 22169 mSDsCounter, 783 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29418 IncrementalHoareTripleChecker+Invalid, 30831 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 783 mSolverCounterUnsat, 4603 mSDtfsCounter, 29418 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1303 GetRequests, 764 SyntacticMatches, 9 SemanticMatches, 530 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3589 ImplicationChecksByTransitivity, 131.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=32, InterpolantAutomatonStates: 417, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 32 MinimizatonAttempts, 936 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 83.3s InterpolantComputationTime, 1155 NumberOfCodeBlocks, 1155 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1072 ConstructedInterpolants, 423 QuantifiedInterpolants, 41456 SizeOfPredicates, 162 NumberOfNonLiveVariables, 6302 ConjunctsInSsa, 848 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-14 03:35:03,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10486841-c5d6-47b3-80a4-7a669084c77a/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)