./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:08:25,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:08:25,235 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 19:08:25,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:08:25,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:08:25,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:08:25,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:08:25,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:08:25,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:08:25,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:08:25,269 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:08:25,269 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:08:25,270 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:08:25,271 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 19:08:25,271 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:08:25,272 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:08:25,272 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 19:08:25,273 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 19:08:25,273 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:08:25,274 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 19:08:25,274 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 19:08:25,275 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 19:08:25,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 19:08:25,276 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 19:08:25,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:08:25,277 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:08:25,277 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:08:25,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:08:25,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:08:25,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:08:25,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:08:25,279 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 19:08:25,280 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 19:08:25,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:08:25,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:08:25,280 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:08:25,281 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:08:25,281 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:08:25,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:08:25,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:08:25,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:08:25,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:08:25,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:08:25,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:08:25,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:08:25,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:08:25,283 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 19:08:25,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 19:08:25,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:08:25,283 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:08:25,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:08:25,284 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2023-12-02 19:08:25,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:08:25,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:08:25,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:08:25,527 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:08:25,527 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:08:25,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2023-12-02 19:08:28,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:08:28,736 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:08:28,737 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2023-12-02 19:08:28,755 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data/3dd634872/20be8f052e454061ab1fec8ab8994a48/FLAGacaf79d86 [2023-12-02 19:08:28,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data/3dd634872/20be8f052e454061ab1fec8ab8994a48 [2023-12-02 19:08:28,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:08:28,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:08:28,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:08:28,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:08:28,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:08:28,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:08:28" (1/1) ... [2023-12-02 19:08:28,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441b397e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:28, skipping insertion in model container [2023-12-02 19:08:28,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:08:28" (1/1) ... [2023-12-02 19:08:28,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:08:29,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:08:29,410 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-12-02 19:08:29,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2870283e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:29, skipping insertion in model container [2023-12-02 19:08:29,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:08:29,412 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 19:08:29,414 INFO L158 Benchmark]: Toolchain (without parser) took 639.10ms. Allocated memory is still 130.0MB. Free memory was 88.8MB in the beginning and 68.2MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 19:08:29,415 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 19:08:29,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 636.64ms. Allocated memory is still 130.0MB. Free memory was 88.5MB in the beginning and 68.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 19:08:29,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 636.64ms. Allocated memory is still 130.0MB. Free memory was 88.5MB in the beginning and 68.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 739]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 19:08:31,391 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 19:08:31,460 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 19:08:31,465 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 19:08:31,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 19:08:31,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 19:08:31,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 19:08:31,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 19:08:31,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 19:08:31,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 19:08:31,495 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 19:08:31,495 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 19:08:31,496 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 19:08:31,496 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 19:08:31,497 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 19:08:31,497 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 19:08:31,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 19:08:31,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 19:08:31,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 19:08:31,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 19:08:31,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 19:08:31,503 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 19:08:31,503 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 19:08:31,503 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 19:08:31,504 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 19:08:31,504 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 19:08:31,505 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 19:08:31,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 19:08:31,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 19:08:31,506 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 19:08:31,506 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 19:08:31,506 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 19:08:31,507 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 19:08:31,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 19:08:31,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 19:08:31,508 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 19:08:31,508 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 19:08:31,508 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 19:08:31,508 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 19:08:31,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 19:08:31,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:08:31,509 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 19:08:31,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 19:08:31,510 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 19:08:31,510 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 19:08:31,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 19:08:31,510 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 19:08:31,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 19:08:31,511 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2023-12-02 19:08:31,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 19:08:31,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 19:08:31,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 19:08:31,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 19:08:31,843 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 19:08:31,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2023-12-02 19:08:34,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 19:08:35,161 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 19:08:35,162 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2023-12-02 19:08:35,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data/43dcda26f/40ccaa559d764e9ebb07743151fdf3b7/FLAG09347749d [2023-12-02 19:08:35,197 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/data/43dcda26f/40ccaa559d764e9ebb07743151fdf3b7 [2023-12-02 19:08:35,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 19:08:35,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 19:08:35,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 19:08:35,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 19:08:35,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 19:08:35,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:08:35" (1/1) ... [2023-12-02 19:08:35,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0d3501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:35, skipping insertion in model container [2023-12-02 19:08:35,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:08:35" (1/1) ... [2023-12-02 19:08:35,277 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:08:35,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:08:35,839 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 19:08:35,857 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 19:08:35,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:08:35,961 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 19:08:36,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 19:08:36,107 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 19:08:36,112 INFO L206 MainTranslator]: Completed translation [2023-12-02 19:08:36,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36 WrapperNode [2023-12-02 19:08:36,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 19:08:36,113 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 19:08:36,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 19:08:36,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 19:08:36,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,156 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,215 INFO L138 Inliner]: procedures = 180, calls = 333, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1174 [2023-12-02 19:08:36,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 19:08:36,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 19:08:36,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 19:08:36,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 19:08:36,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 19:08:36,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 19:08:36,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 19:08:36,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 19:08:36,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (1/1) ... [2023-12-02 19:08:36,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 19:08:36,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:08:36,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 19:08:36,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 19:08:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 19:08:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 19:08:36,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 19:08:36,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 19:08:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 19:08:36,418 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 19:08:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 19:08:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 19:08:36,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 19:08:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 19:08:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 19:08:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 19:08:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 19:08:36,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 19:08:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 19:08:36,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 19:08:36,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 19:08:36,676 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 19:08:36,679 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 19:08:43,319 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 19:08:43,360 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 19:08:43,360 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-12-02 19:08:43,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:08:43 BoogieIcfgContainer [2023-12-02 19:08:43,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 19:08:43,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 19:08:43,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 19:08:43,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 19:08:43,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:08:35" (1/3) ... [2023-12-02 19:08:43,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d83a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:08:43, skipping insertion in model container [2023-12-02 19:08:43,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:08:36" (2/3) ... [2023-12-02 19:08:43,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d83a40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:08:43, skipping insertion in model container [2023-12-02 19:08:43,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:08:43" (3/3) ... [2023-12-02 19:08:43,369 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test3-2.i [2023-12-02 19:08:43,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 19:08:43,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 19:08:43,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 19:08:43,437 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a852ff9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 19:08:43,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 19:08:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 218 states have (on average 1.6743119266055047) internal successors, (365), 221 states have internal predecessors, (365), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:08:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 19:08:43,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:43,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 19:08:43,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:08:43,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash 943101, now seen corresponding path program 1 times [2023-12-02 19:08:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:08:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430592210] [2023-12-02 19:08:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:43,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:43,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:08:43,469 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:08:43,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 19:08:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:43,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:08:43,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:08:43,759 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_21| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_21|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_21| (_ bv0 1))))) is different from true [2023-12-02 19:08:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:08:43,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:08:43,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:08:43,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430592210] [2023-12-02 19:08:43,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430592210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:43,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:43,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:08:43,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142635597] [2023-12-02 19:08:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:08:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:08:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:08:43,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 19:08:43,802 INFO L87 Difference]: Start difference. First operand has 228 states, 218 states have (on average 1.6743119266055047) internal successors, (365), 221 states have internal predecessors, (365), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:46,130 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 [] [2023-12-02 19:08:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:46,369 INFO L93 Difference]: Finished difference Result 350 states and 462 transitions. [2023-12-02 19:08:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:08:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 19:08:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:46,384 INFO L225 Difference]: With dead ends: 350 [2023-12-02 19:08:46,384 INFO L226 Difference]: Without dead ends: 348 [2023-12-02 19:08:46,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 19:08:46,390 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 156 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:46,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 554 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 1 Unknown, 463 Unchecked, 2.5s Time] [2023-12-02 19:08:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-12-02 19:08:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 226. [2023-12-02 19:08:46,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 217 states have (on average 1.3087557603686637) internal successors, (284), 219 states have internal predecessors, (284), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 19:08:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 294 transitions. [2023-12-02 19:08:46,446 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 294 transitions. Word has length 3 [2023-12-02 19:08:46,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:46,447 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 294 transitions. [2023-12-02 19:08:46,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 294 transitions. [2023-12-02 19:08:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 19:08:46,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:46,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:08:46,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 19:08:46,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:46,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:08:46,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:46,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1166845765, now seen corresponding path program 1 times [2023-12-02 19:08:46,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:08:46,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178690932] [2023-12-02 19:08:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:46,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:46,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:08:46,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:08:46,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 19:08:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:46,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 19:08:46,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:08:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:08:46,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:08:46,923 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:08:46,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178690932] [2023-12-02 19:08:46,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178690932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:46,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:46,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 19:08:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916662790] [2023-12-02 19:08:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:08:46,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:08:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:08:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:08:46,927 INFO L87 Difference]: Start difference. First operand 226 states and 294 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:49,284 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 [] [2023-12-02 19:08:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:51,588 INFO L93 Difference]: Finished difference Result 372 states and 485 transitions. [2023-12-02 19:08:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:08:51,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-02 19:08:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:51,593 INFO L225 Difference]: With dead ends: 372 [2023-12-02 19:08:51,593 INFO L226 Difference]: Without dead ends: 372 [2023-12-02 19:08:51,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:08:51,594 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 194 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:51,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 805 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 117 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-12-02 19:08:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-02 19:08:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 341. [2023-12-02 19:08:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 331 states have (on average 1.3081570996978853) internal successors, (433), 334 states have internal predecessors, (433), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:08:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 445 transitions. [2023-12-02 19:08:51,611 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 445 transitions. Word has length 14 [2023-12-02 19:08:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:51,611 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 445 transitions. [2023-12-02 19:08:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 445 transitions. [2023-12-02 19:08:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 19:08:51,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:51,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:08:51,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 19:08:51,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:51,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:08:51,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash -342725252, now seen corresponding path program 1 times [2023-12-02 19:08:51,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:08:51,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830555038] [2023-12-02 19:08:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:51,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:51,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:08:51,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:08:51,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 19:08:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:51,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 19:08:51,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:08:52,100 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_22| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_22|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_22| (_ bv0 1))))) is different from true [2023-12-02 19:08:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:08:52,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:08:52,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:08:52,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830555038] [2023-12-02 19:08:52,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830555038] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:52,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:52,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 19:08:52,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976840380] [2023-12-02 19:08:52,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:52,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:08:52,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:08:52,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:08:52,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 19:08:52,104 INFO L87 Difference]: Start difference. First operand 341 states and 445 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:54,231 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 [] [2023-12-02 19:08:55,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:08:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:55,509 INFO L93 Difference]: Finished difference Result 434 states and 564 transitions. [2023-12-02 19:08:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:08:55,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 19:08:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:55,512 INFO L225 Difference]: With dead ends: 434 [2023-12-02 19:08:55,512 INFO L226 Difference]: Without dead ends: 426 [2023-12-02 19:08:55,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-12-02 19:08:55,513 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 86 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 396 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:55,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 553 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 1 Unknown, 396 Unchecked, 3.4s Time] [2023-12-02 19:08:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-02 19:08:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 386. [2023-12-02 19:08:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 375 states have (on average 1.3066666666666666) internal successors, (490), 378 states have internal predecessors, (490), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 19:08:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 504 transitions. [2023-12-02 19:08:55,533 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 504 transitions. Word has length 15 [2023-12-02 19:08:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:55,533 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 504 transitions. [2023-12-02 19:08:55,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 504 transitions. [2023-12-02 19:08:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 19:08:55,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:55,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:08:55,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-02 19:08:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:55,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:08:55,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1023708939, now seen corresponding path program 1 times [2023-12-02 19:08:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:08:55,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696327464] [2023-12-02 19:08:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:55,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:08:55,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:08:55,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 19:08:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:55,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:08:55,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:08:55,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:08:55,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:08:55,938 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:08:55,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696327464] [2023-12-02 19:08:55,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696327464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:55,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:55,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:08:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551251874] [2023-12-02 19:08:55,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:55,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:08:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:08:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:08:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:08:55,941 INFO L87 Difference]: Start difference. First operand 386 states and 504 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:56,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:08:56,096 INFO L93 Difference]: Finished difference Result 398 states and 492 transitions. [2023-12-02 19:08:56,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:08:56,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-02 19:08:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:08:56,099 INFO L225 Difference]: With dead ends: 398 [2023-12-02 19:08:56,099 INFO L226 Difference]: Without dead ends: 398 [2023-12-02 19:08:56,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:08:56,100 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 36 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:08:56,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 759 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:08:56,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-12-02 19:08:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 395. [2023-12-02 19:08:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 384 states have (on average 1.2369791666666667) internal successors, (475), 387 states have internal predecessors, (475), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 19:08:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 489 transitions. [2023-12-02 19:08:56,115 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 489 transitions. Word has length 50 [2023-12-02 19:08:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:08:56,115 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 489 transitions. [2023-12-02 19:08:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:08:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 489 transitions. [2023-12-02 19:08:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 19:08:56,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:08:56,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:08:56,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:08:56,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:56,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:08:56,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:08:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash -608532247, now seen corresponding path program 1 times [2023-12-02 19:08:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:08:56,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236828524] [2023-12-02 19:08:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:08:56,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:08:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:08:56,324 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:08:56,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 19:08:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:08:56,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:08:56,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:08:56,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:08:56,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:08:56,553 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:08:56,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 19:08:56,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:08:56,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 19:08:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:08:56,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:08:56,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:08:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236828524] [2023-12-02 19:08:56,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236828524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:08:56,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:08:56,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:08:56,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439377293] [2023-12-02 19:08:56,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:08:56,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:08:56,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:08:56,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:08:56,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:08:56,707 INFO L87 Difference]: Start difference. First operand 395 states and 489 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:09:00,539 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 [] [2023-12-02 19:09:03,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:03,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:03,717 INFO L93 Difference]: Finished difference Result 349 states and 436 transitions. [2023-12-02 19:09:03,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:09:03,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-02 19:09:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:03,720 INFO L225 Difference]: With dead ends: 349 [2023-12-02 19:09:03,720 INFO L226 Difference]: Without dead ends: 346 [2023-12-02 19:09:03,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 19:09:03,721 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 52 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:03,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 974 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2023-12-02 19:09:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2023-12-02 19:09:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2023-12-02 19:09:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 336 states have (on average 1.2529761904761905) internal successors, (421), 339 states have internal predecessors, (421), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:09:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 433 transitions. [2023-12-02 19:09:03,733 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 433 transitions. Word has length 50 [2023-12-02 19:09:03,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:03,733 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 433 transitions. [2023-12-02 19:09:03,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 19:09:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 433 transitions. [2023-12-02 19:09:03,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 19:09:03,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:03,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:03,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:09:03,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:03,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:03,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash 750503984, now seen corresponding path program 1 times [2023-12-02 19:09:03,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37496253] [2023-12-02 19:09:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:03,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:03,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 19:09:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:04,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:09:04,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:09:04,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:04,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37496253] [2023-12-02 19:09:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37496253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:09:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891258312] [2023-12-02 19:09:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:04,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:09:04,492 INFO L87 Difference]: Start difference. First operand 346 states and 433 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:04,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:04,629 INFO L93 Difference]: Finished difference Result 354 states and 425 transitions. [2023-12-02 19:09:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:04,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-12-02 19:09:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:04,632 INFO L225 Difference]: With dead ends: 354 [2023-12-02 19:09:04,632 INFO L226 Difference]: Without dead ends: 354 [2023-12-02 19:09:04,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:04,633 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 43 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:04,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 723 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-02 19:09:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2023-12-02 19:09:04,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 342 states have (on average 1.2017543859649122) internal successors, (411), 345 states have internal predecessors, (411), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:09:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 423 transitions. [2023-12-02 19:09:04,643 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 423 transitions. Word has length 83 [2023-12-02 19:09:04,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:04,643 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 423 transitions. [2023-12-02 19:09:04,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:04,644 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 423 transitions. [2023-12-02 19:09:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 19:09:04,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:04,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:04,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 19:09:04,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:04,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:04,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:04,848 INFO L85 PathProgramCache]: Analyzing trace with hash -4527456, now seen corresponding path program 1 times [2023-12-02 19:09:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:04,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153629328] [2023-12-02 19:09:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:04,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:04,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:04,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:04,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 19:09:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:05,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:09:05,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 19:09:05,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:05,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153629328] [2023-12-02 19:09:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153629328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:05,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:05,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 19:09:05,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851945667] [2023-12-02 19:09:05,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:05,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 19:09:05,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:05,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 19:09:05,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:05,396 INFO L87 Difference]: Start difference. First operand 352 states and 423 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:05,477 INFO L93 Difference]: Finished difference Result 340 states and 403 transitions. [2023-12-02 19:09:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:05,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2023-12-02 19:09:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:05,479 INFO L225 Difference]: With dead ends: 340 [2023-12-02 19:09:05,479 INFO L226 Difference]: Without dead ends: 340 [2023-12-02 19:09:05,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:05,480 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 9 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:05,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 724 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 19:09:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-02 19:09:05,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2023-12-02 19:09:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 330 states have (on average 1.1848484848484848) internal successors, (391), 333 states have internal predecessors, (391), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 19:09:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 403 transitions. [2023-12-02 19:09:05,489 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 403 transitions. Word has length 83 [2023-12-02 19:09:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:05,490 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 403 transitions. [2023-12-02 19:09:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 403 transitions. [2023-12-02 19:09:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 19:09:05,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:05,492 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:05,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-02 19:09:05,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:05,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:05,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1835406054, now seen corresponding path program 1 times [2023-12-02 19:09:05,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:05,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906356152] [2023-12-02 19:09:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:05,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:05,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:05,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:05,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 19:09:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:06,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:09:06,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 19:09:06,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:06,174 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:06,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906356152] [2023-12-02 19:09:06,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906356152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:06,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 19:09:06,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 19:09:06,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295905088] [2023-12-02 19:09:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:06,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:06,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:06,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:06,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 19:09:06,176 INFO L87 Difference]: Start difference. First operand 340 states and 403 transitions. Second operand has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:09:06,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:06,241 INFO L93 Difference]: Finished difference Result 342 states and 406 transitions. [2023-12-02 19:09:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 19:09:06,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2023-12-02 19:09:06,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:06,245 INFO L225 Difference]: With dead ends: 342 [2023-12-02 19:09:06,245 INFO L226 Difference]: Without dead ends: 342 [2023-12-02 19:09:06,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 19:09:06,246 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:06,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 782 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 19:09:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-02 19:09:06,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-12-02 19:09:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 331 states have (on average 1.1873111782477341) internal successors, (393), 335 states have internal predecessors, (393), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 19:09:06,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 406 transitions. [2023-12-02 19:09:06,255 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 406 transitions. Word has length 83 [2023-12-02 19:09:06,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:06,255 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 406 transitions. [2023-12-02 19:09:06,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 19:09:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 406 transitions. [2023-12-02 19:09:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-02 19:09:06,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:06,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:06,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 19:09:06,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:06,459 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:06,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1745675642, now seen corresponding path program 1 times [2023-12-02 19:09:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:06,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397719788] [2023-12-02 19:09:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:06,461 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:06,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 19:09:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:06,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:09:06,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:09:06,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:09:07,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:07,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397719788] [2023-12-02 19:09:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397719788] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1197902295] [2023-12-02 19:09:07,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:07,068 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:09:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:09:07,074 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:09:07,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 19:09:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:07,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:09:07,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 19:09:07,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:09:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1197902295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874137879] [2023-12-02 19:09:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:07,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:07,828 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:07,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 19:09:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:08,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 19:09:08,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:09:08,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 19:09:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874137879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:08,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:09:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 19:09:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386449078] [2023-12-02 19:09:08,386 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:08,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 19:09:08,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 19:09:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 19:09:08,388 INFO L87 Difference]: Start difference. First operand 342 states and 406 transitions. Second operand has 11 states, 8 states have (on average 11.375) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 19:09:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:08,769 INFO L93 Difference]: Finished difference Result 354 states and 425 transitions. [2023-12-02 19:09:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 19:09:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 11.375) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2023-12-02 19:09:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:08,772 INFO L225 Difference]: With dead ends: 354 [2023-12-02 19:09:08,773 INFO L226 Difference]: Without dead ends: 354 [2023-12-02 19:09:08,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 19:09:08,774 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 17 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:08,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1803 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 19:09:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-12-02 19:09:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2023-12-02 19:09:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 340 states have (on average 1.2058823529411764) internal successors, (410), 344 states have internal predecessors, (410), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 19:09:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 423 transitions. [2023-12-02 19:09:08,786 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 423 transitions. Word has length 85 [2023-12-02 19:09:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:08,786 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 423 transitions. [2023-12-02 19:09:08,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 11.375) internal successors, (91), 11 states have internal predecessors, (91), 2 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 19:09:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 423 transitions. [2023-12-02 19:09:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 19:09:08,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:08,788 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:08,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 19:09:08,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-02 19:09:09,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 19:09:09,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:09,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:09,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash 334488294, now seen corresponding path program 2 times [2023-12-02 19:09:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707565938] [2023-12-02 19:09:09,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:09:09,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:09,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:09,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:09,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 19:09:09,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:09:09,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:09,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:09:09,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:09:10,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:10,235 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 19:09:10,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:10,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707565938] [2023-12-02 19:09:10,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707565938] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:10,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [264872495] [2023-12-02 19:09:10,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:09:10,236 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:09:10,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:09:10,237 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:09:10,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 19:09:11,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:09:11,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:11,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:09:11,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:09:11,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 19:09:11,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [264872495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844411300] [2023-12-02 19:09:11,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:09:11,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:11,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:11,197 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:11,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 19:09:11,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:09:11,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:11,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 19:09:11,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:12,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:09:12,162 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:09:12,163 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 19:09:12,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 19:09:12,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 19:09:12,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 19:09:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 19:09:12,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:12,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844411300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:12,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 19:09:12,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8, 8, 8] total 18 [2023-12-02 19:09:12,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778497825] [2023-12-02 19:09:12,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:12,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 19:09:12,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:12,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 19:09:12,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-02 19:09:12,331 INFO L87 Difference]: Start difference. First operand 352 states and 423 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:14,819 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 [] [2023-12-02 19:09:17,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:17,454 INFO L93 Difference]: Finished difference Result 445 states and 540 transitions. [2023-12-02 19:09:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 19:09:17,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 91 [2023-12-02 19:09:17,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:17,458 INFO L225 Difference]: With dead ends: 445 [2023-12-02 19:09:17,458 INFO L226 Difference]: Without dead ends: 445 [2023-12-02 19:09:17,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-12-02 19:09:17,459 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 349 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:17,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 691 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-12-02 19:09:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-12-02 19:09:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 354. [2023-12-02 19:09:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 342 states have (on average 1.2046783625730995) internal successors, (412), 346 states have internal predecessors, (412), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2023-12-02 19:09:17,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 425 transitions. [2023-12-02 19:09:17,470 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 425 transitions. Word has length 91 [2023-12-02 19:09:17,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:17,470 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 425 transitions. [2023-12-02 19:09:17,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 425 transitions. [2023-12-02 19:09:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-02 19:09:17,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:17,473 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:17,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:09:17,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 19:09:17,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 19:09:18,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:18,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:18,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2129152010, now seen corresponding path program 1 times [2023-12-02 19:09:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:18,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586202497] [2023-12-02 19:09:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:18,080 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:18,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:18,081 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:18,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:09:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:18,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:09:18,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:09:18,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 19:09:18,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:18,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586202497] [2023-12-02 19:09:18,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586202497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:18,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [490108281] [2023-12-02 19:09:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:18,932 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:09:18,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:09:18,934 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:09:18,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 19:09:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:19,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 19:09:19,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 19:09:19,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 19:09:19,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [490108281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 19:09:19,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 19:09:19,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 8] total 16 [2023-12-02 19:09:19,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530860777] [2023-12-02 19:09:19,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 19:09:19,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 19:09:19,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 19:09:19,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-02 19:09:19,918 INFO L87 Difference]: Start difference. First operand 354 states and 425 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:22,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:24,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:27,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 19:09:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:27,896 INFO L93 Difference]: Finished difference Result 522 states and 637 transitions. [2023-12-02 19:09:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 19:09:27,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 127 [2023-12-02 19:09:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:27,902 INFO L225 Difference]: With dead ends: 522 [2023-12-02 19:09:27,902 INFO L226 Difference]: Without dead ends: 522 [2023-12-02 19:09:27,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-12-02 19:09:27,903 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 516 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:27,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 558 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2023-12-02 19:09:27,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2023-12-02 19:09:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 450. [2023-12-02 19:09:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 436 states have (on average 1.2064220183486238) internal successors, (526), 441 states have internal predecessors, (526), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 19:09:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 543 transitions. [2023-12-02 19:09:27,918 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 543 transitions. Word has length 127 [2023-12-02 19:09:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:27,918 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 543 transitions. [2023-12-02 19:09:27,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 19:09:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 543 transitions. [2023-12-02 19:09:27,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-02 19:09:27,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:27,921 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:27,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 19:09:28,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 19:09:28,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:28,321 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:28,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:28,322 INFO L85 PathProgramCache]: Analyzing trace with hash 779811924, now seen corresponding path program 1 times [2023-12-02 19:09:28,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:28,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211901359] [2023-12-02 19:09:28,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:28,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:28,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:28,324 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:28,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:09:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:28,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:09:28,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:09:28,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 19:09:29,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:29,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211901359] [2023-12-02 19:09:29,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211901359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:29,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1997724057] [2023-12-02 19:09:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:29,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:09:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:09:29,147 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:09:29,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-02 19:09:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:30,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 19:09:30,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:09:30,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:30,204 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 19:09:30,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1997724057] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:30,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50907130] [2023-12-02 19:09:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 19:09:30,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:30,206 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:30,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 19:09:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 19:09:30,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 19:09:30,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 19:09:31,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 19:09:31,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50907130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:31,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:09:31,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2023-12-02 19:09:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391706527] [2023-12-02 19:09:31,281 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:31,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 19:09:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 19:09:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2023-12-02 19:09:31,283 INFO L87 Difference]: Start difference. First operand 450 states and 543 transitions. Second operand has 20 states, 17 states have (on average 8.411764705882353) internal successors, (143), 20 states have internal predecessors, (143), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 19:09:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:32,123 INFO L93 Difference]: Finished difference Result 463 states and 560 transitions. [2023-12-02 19:09:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 19:09:32,124 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.411764705882353) internal successors, (143), 20 states have internal predecessors, (143), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2023-12-02 19:09:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:32,126 INFO L225 Difference]: With dead ends: 463 [2023-12-02 19:09:32,127 INFO L226 Difference]: Without dead ends: 460 [2023-12-02 19:09:32,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 19:09:32,128 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 15 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:32,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2066 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 19:09:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-02 19:09:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 457. [2023-12-02 19:09:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 443 states have (on average 1.2031602708803613) internal successors, (533), 448 states have internal predecessors, (533), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 19:09:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 550 transitions. [2023-12-02 19:09:32,140 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 550 transitions. Word has length 135 [2023-12-02 19:09:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:32,141 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 550 transitions. [2023-12-02 19:09:32,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.411764705882353) internal successors, (143), 20 states have internal predecessors, (143), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 19:09:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 550 transitions. [2023-12-02 19:09:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 19:09:32,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:32,143 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:32,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-12-02 19:09:32,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Forceful destruction successful, exit code 0 [2023-12-02 19:09:32,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 19:09:32,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:32,744 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:32,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:32,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1843812548, now seen corresponding path program 2 times [2023-12-02 19:09:32,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:32,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251621906] [2023-12-02 19:09:32,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:09:32,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:32,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:32,747 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:32,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:09:33,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:09:33,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:33,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:09:33,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 19:09:33,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:34,218 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 19:09:34,219 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251621906] [2023-12-02 19:09:34,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251621906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1605907805] [2023-12-02 19:09:34,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:09:34,219 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:09:34,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:09:34,220 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:09:34,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 19:09:36,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:09:36,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:36,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 19:09:36,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 70 proven. 55 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 19:09:36,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 122 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 19:09:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1605907805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125542753] [2023-12-02 19:09:36,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 19:09:36,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:09:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:09:36,292 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:09:36,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 19:09:37,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 19:09:37,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:37,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 19:09:37,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:09:37,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 69 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 19:09:37,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125542753] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:37,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 19:09:37,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 9, 9] total 35 [2023-12-02 19:09:37,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235737595] [2023-12-02 19:09:37,589 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 19:09:37,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 19:09:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 19:09:37,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 19:09:37,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=862, Unknown=0, NotChecked=0, Total=1190 [2023-12-02 19:09:37,592 INFO L87 Difference]: Start difference. First operand 457 states and 550 transitions. Second operand has 35 states, 31 states have (on average 5.129032258064516) internal successors, (159), 35 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 19:09:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 19:09:41,066 INFO L93 Difference]: Finished difference Result 493 states and 607 transitions. [2023-12-02 19:09:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-02 19:09:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 5.129032258064516) internal successors, (159), 35 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 142 [2023-12-02 19:09:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 19:09:41,069 INFO L225 Difference]: With dead ends: 493 [2023-12-02 19:09:41,069 INFO L226 Difference]: Without dead ends: 490 [2023-12-02 19:09:41,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1869, Invalid=5441, Unknown=0, NotChecked=0, Total=7310 [2023-12-02 19:09:41,072 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 59 mSDsluCounter, 4870 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 5131 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 19:09:41,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 5131 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 19:09:41,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-12-02 19:09:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 481. [2023-12-02 19:09:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 467 states have (on average 1.2162740899357602) internal successors, (568), 472 states have internal predecessors, (568), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-12-02 19:09:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 585 transitions. [2023-12-02 19:09:41,083 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 585 transitions. Word has length 142 [2023-12-02 19:09:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 19:09:41,083 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 585 transitions. [2023-12-02 19:09:41,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 5.129032258064516) internal successors, (159), 35 states have internal predecessors, (159), 2 states have call successors, (5), 2 states have call predecessors, (5), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 19:09:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 585 transitions. [2023-12-02 19:09:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 19:09:41,086 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 19:09:41,086 INFO L195 NwaCegarLoop]: trace histogram [39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 19:09:41,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 19:09:41,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 19:09:41,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:09:41,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:41,687 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 19:09:41,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 19:09:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash -959387452, now seen corresponding path program 3 times [2023-12-02 19:09:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 19:09:41,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577761527] [2023-12-02 19:09:41,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:09:41,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 19:09:41,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 19:09:41,689 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 19:09:41,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 [2023-12-02 19:09:48,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 19:09:48,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:09:48,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 19:09:48,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:09:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 19:09:48,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:09:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 19:09:50,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 19:09:50,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577761527] [2023-12-02 19:09:50,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577761527] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:09:50,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944863833] [2023-12-02 19:09:50,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:09:50,008 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 19:09:50,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 19:09:50,009 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 19:09:50,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 19:16:53,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-12-02 19:16:53,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 19:16:53,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 19:16:53,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 19:16:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 19:16:54,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 19:16:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 417 proven. 153 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-02 19:16:54,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [944863833] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 19:16:54,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014987114] [2023-12-02 19:16:54,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 19:16:54,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 19:16:54,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 19:16:54,347 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 19:16:54,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284b31c9-5538-4da8-b44d-0f6d43ca265d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process