./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:19:27,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:19:28,009 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-12-02 13:19:28,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:19:28,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:19:28,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:19:28,040 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:19:28,041 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:19:28,041 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:19:28,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:19:28,042 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:19:28,043 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:19:28,043 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:19:28,044 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:19:28,044 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:19:28,045 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:19:28,045 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:19:28,046 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:19:28,046 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:19:28,047 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:19:28,047 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:19:28,048 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:19:28,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:19:28,049 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:19:28,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:19:28,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:19:28,051 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:19:28,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:19:28,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:19:28,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:19:28,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:19:28,053 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:19:28,053 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:19:28,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:19:28,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:19:28,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:19:28,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:19:28,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:19:28,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:19:28,054 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:19:28,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:19:28,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:19:28,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:19:28,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:19:28,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:19:28,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:19:28,056 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:19:28,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:19:28,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:19:28,056 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:19:28,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:19:28,057 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_b80fbc00-4f65-4a58-be82-620a03baf6f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2023-12-02 13:19:28,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:19:28,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:19:28,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:19:28,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:19:28,292 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:19:28,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-12-02 13:19:31,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:19:31,305 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:19:31,305 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-12-02 13:19:31,323 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data/4af5feb73/b81998bf50264dc3a9ed584d03a2eb5e/FLAGc9e54ed3f [2023-12-02 13:19:31,337 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data/4af5feb73/b81998bf50264dc3a9ed584d03a2eb5e [2023-12-02 13:19:31,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:19:31,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:19:31,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:19:31,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:19:31,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:19:31,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:19:31" (1/1) ... [2023-12-02 13:19:31,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e4ae9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:31, skipping insertion in model container [2023-12-02 13:19:31,350 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:19:31" (1/1) ... [2023-12-02 13:19:31,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:19:31,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:19:31,916 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 13:19:31,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@79264ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:31, skipping insertion in model container [2023-12-02 13:19:31,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:19:31,918 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 13:19:31,919 INFO L158 Benchmark]: Toolchain (without parser) took 577.11ms. Allocated memory is still 148.9MB. Free memory was 113.1MB in the beginning and 92.3MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 13:19:31,920 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:19:31,920 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.78ms. Allocated memory is still 148.9MB. Free memory was 113.1MB in the beginning and 92.3MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 13:19:31,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 121.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 574.78ms. Allocated memory is still 148.9MB. Free memory was 113.1MB in the beginning and 92.3MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:19:33,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:19:33,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-12-02 13:19:33,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:19:33,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:19:33,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:19:33,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:19:33,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:19:33,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:19:33,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:19:33,704 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:19:33,705 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:19:33,705 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:19:33,706 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:19:33,706 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:19:33,707 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:19:33,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:19:33,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:19:33,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:19:33,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:19:33,709 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:19:33,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:19:33,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:19:33,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:19:33,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:19:33,714 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:19:33,714 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:19:33,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:19:33,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:19:33,715 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:19:33,716 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:19:33,716 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:19:33,716 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:19:33,717 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:19:33,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:19:33,717 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:19:33,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:19:33,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:19:33,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:19:33,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:19:33,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:19:33,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:19:33,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:19:33,719 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:19:33,719 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:19:33,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:19:33,727 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:19:33,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:19:33,727 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_b80fbc00-4f65-4a58-be82-620a03baf6f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2023-12-02 13:19:34,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:19:34,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:19:34,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:19:34,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:19:34,063 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:19:34,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-12-02 13:19:36,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:19:37,154 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:19:37,154 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2023-12-02 13:19:37,173 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data/40c2436f1/a13481fec4a24b71989048c548e2e52f/FLAGdb52bcf98 [2023-12-02 13:19:37,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/data/40c2436f1/a13481fec4a24b71989048c548e2e52f [2023-12-02 13:19:37,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:19:37,191 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:19:37,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:19:37,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:19:37,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:19:37,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:19:37" (1/1) ... [2023-12-02 13:19:37,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc28f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:37, skipping insertion in model container [2023-12-02 13:19:37,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:19:37" (1/1) ... [2023-12-02 13:19:37,284 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:19:37,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:19:37,825 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:19:37,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:19:37,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:19:37,930 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:19:38,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:19:38,074 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:19:38,081 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:19:38,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38 WrapperNode [2023-12-02 13:19:38,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:19:38,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:19:38,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:19:38,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:19:38,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,191 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1160 [2023-12-02 13:19:38,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:19:38,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:19:38,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:19:38,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:19:38,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:19:38,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:19:38,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:19:38,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:19:38,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (1/1) ... [2023-12-02 13:19:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:19:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:19:38,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:19:38,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:19:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 13:19:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 13:19:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 13:19:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 13:19:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 13:19:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 13:19:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 13:19:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 13:19:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-12-02 13:19:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-12-02 13:19:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 13:19:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:19:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:19:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:19:38,618 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:19:38,620 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:19:44,388 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:19:44,432 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:19:44,432 INFO L309 CfgBuilder]: Removed 71 assume(true) statements. [2023-12-02 13:19:44,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:19:44 BoogieIcfgContainer [2023-12-02 13:19:44,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:19:44,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:19:44,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:19:44,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:19:44,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:19:37" (1/3) ... [2023-12-02 13:19:44,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28570d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:19:44, skipping insertion in model container [2023-12-02 13:19:44,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:19:38" (2/3) ... [2023-12-02 13:19:44,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28570d2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:19:44, skipping insertion in model container [2023-12-02 13:19:44,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:19:44" (3/3) ... [2023-12-02 13:19:44,441 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2023-12-02 13:19:44,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:19:44,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 13:19:44,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:19:44,503 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;@33deabd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:19:44,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 13:19:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 233 states have (on average 1.6824034334763949) internal successors, (392), 252 states have internal predecessors, (392), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 13:19:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:19:44,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:44,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:44,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:19:44,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash -845347131, now seen corresponding path program 1 times [2023-12-02 13:19:44,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:19:44,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238690534] [2023-12-02 13:19:44,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:44,531 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 13:19:44,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:19:44,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:44,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:44,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:19:44,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:44,740 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 13:19:44,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:19:44,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:19:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238690534] [2023-12-02 13:19:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238690534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:44,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:19:44,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:19:44,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402719509] [2023-12-02 13:19:44,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:44,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:19:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:19:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:19:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:19:44,781 INFO L87 Difference]: Start difference. First operand has 262 states, 233 states have (on average 1.6824034334763949) internal successors, (392), 252 states have internal predecessors, (392), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 13:19:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:44,846 INFO L93 Difference]: Finished difference Result 260 states and 356 transitions. [2023-12-02 13:19:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:19:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 10 [2023-12-02 13:19:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:44,862 INFO L225 Difference]: With dead ends: 260 [2023-12-02 13:19:44,862 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 13:19:44,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:19:44,866 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:44,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:19:44,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 13:19:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-12-02 13:19:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 232 states have (on average 1.3491379310344827) internal successors, (313), 249 states have internal predecessors, (313), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:19:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 355 transitions. [2023-12-02 13:19:44,918 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 355 transitions. Word has length 10 [2023-12-02 13:19:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:44,918 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 355 transitions. [2023-12-02 13:19:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 13:19:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 355 transitions. [2023-12-02 13:19:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 13:19:44,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:44,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:44,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:45,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:45,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:19:45,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:45,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2004107571, now seen corresponding path program 1 times [2023-12-02 13:19:45,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:19:45,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326696347] [2023-12-02 13:19:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:45,122 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 13:19:45,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:19:45,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:45,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:45,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:19:45,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:45,361 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:19:45,362 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:19:45,363 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:19:45,372 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 13:19:45,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:19:45,448 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 13:19:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:19:45,467 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:19:45,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:19:45,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326696347] [2023-12-02 13:19:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326696347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:45,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:19:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:19:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852873742] [2023-12-02 13:19:45,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:45,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:19:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:19:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:19:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:19:45,471 INFO L87 Difference]: Start difference. First operand 259 states and 355 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:49,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:19:52,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:19:52,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:52,961 INFO L93 Difference]: Finished difference Result 402 states and 545 transitions. [2023-12-02 13:19:52,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:19:52,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 13:19:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:52,965 INFO L225 Difference]: With dead ends: 402 [2023-12-02 13:19:52,965 INFO L226 Difference]: Without dead ends: 402 [2023-12-02 13:19:52,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:19:52,966 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 175 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:52,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 917 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2023-12-02 13:19:52,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-12-02 13:19:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 261. [2023-12-02 13:19:52,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 234 states have (on average 1.3461538461538463) internal successors, (315), 251 states have internal predecessors, (315), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:19:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 357 transitions. [2023-12-02 13:19:52,986 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 357 transitions. Word has length 12 [2023-12-02 13:19:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:52,987 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 357 transitions. [2023-12-02 13:19:52,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 357 transitions. [2023-12-02 13:19:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 13:19:52,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:52,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:52,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:53,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:53,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:19:53,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:53,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1970640049, now seen corresponding path program 1 times [2023-12-02 13:19:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:19:53,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385637160] [2023-12-02 13:19:53,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:53,193 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 13:19:53,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:19:53,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:53,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:53,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:19:53,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:53,627 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 13:19:53,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:19:53,627 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:19:53,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385637160] [2023-12-02 13:19:53,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385637160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:53,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:19:53,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:19:53,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736780246] [2023-12-02 13:19:53,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:53,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:19:53,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:19:53,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:19:53,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:19:53,630 INFO L87 Difference]: Start difference. First operand 261 states and 357 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:53,795 INFO L93 Difference]: Finished difference Result 265 states and 353 transitions. [2023-12-02 13:19:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:19:53,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-02 13:19:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:53,798 INFO L225 Difference]: With dead ends: 265 [2023-12-02 13:19:53,798 INFO L226 Difference]: Without dead ends: 265 [2023-12-02 13:19:53,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 13:19:53,800 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 37 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:53,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 938 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:19:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-12-02 13:19:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2023-12-02 13:19:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 237 states have (on average 1.3080168776371308) internal successors, (310), 254 states have internal predecessors, (310), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:19:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 352 transitions. [2023-12-02 13:19:53,817 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 352 transitions. Word has length 66 [2023-12-02 13:19:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:53,817 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 352 transitions. [2023-12-02 13:19:53,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 352 transitions. [2023-12-02 13:19:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 13:19:53,820 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:53,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:53,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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)] Ended with exit code 0 [2023-12-02 13:19:54,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:54,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:19:54,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1992526653, now seen corresponding path program 1 times [2023-12-02 13:19:54,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:19:54,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318301538] [2023-12-02 13:19:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:54,024 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 13:19:54,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:19:54,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:54,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:54,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:19:54,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:54,541 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 13:19:54,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:19:54,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:19:54,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318301538] [2023-12-02 13:19:54,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318301538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:54,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:19:54,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:19:54,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078934889] [2023-12-02 13:19:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:54,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:19:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:19:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:19:54,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:19:54,545 INFO L87 Difference]: Start difference. First operand 264 states and 352 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:54,674 INFO L93 Difference]: Finished difference Result 258 states and 342 transitions. [2023-12-02 13:19:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:19:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-02 13:19:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:54,677 INFO L225 Difference]: With dead ends: 258 [2023-12-02 13:19:54,678 INFO L226 Difference]: Without dead ends: 258 [2023-12-02 13:19:54,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 13:19:54,679 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 5 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:54,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 937 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:19:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-12-02 13:19:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-12-02 13:19:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 231 states have (on average 1.2987012987012987) internal successors, (300), 248 states have internal predecessors, (300), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:19:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 342 transitions. [2023-12-02 13:19:54,693 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 342 transitions. Word has length 66 [2023-12-02 13:19:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:54,693 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 342 transitions. [2023-12-02 13:19:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:54,693 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 342 transitions. [2023-12-02 13:19:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-02 13:19:54,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:54,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:19:54,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:54,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:54,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:19:54,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1598159867, now seen corresponding path program 1 times [2023-12-02 13:19:54,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:19:54,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771154949] [2023-12-02 13:19:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:54,902 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 13:19:54,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:19:54,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:54,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:55,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:19:55,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:55,519 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 13:19:55,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:19:55,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:19:55,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771154949] [2023-12-02 13:19:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771154949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:55,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:19:55,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:19:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244483667] [2023-12-02 13:19:55,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:55,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:19:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:19:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:19:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:19:55,522 INFO L87 Difference]: Start difference. First operand 258 states and 342 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:56,608 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2023-12-02 13:19:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:19:56,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-02 13:19:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:56,611 INFO L225 Difference]: With dead ends: 396 [2023-12-02 13:19:56,611 INFO L226 Difference]: Without dead ends: 396 [2023-12-02 13:19:56,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:19:56,613 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 132 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:56,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 665 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:19:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-12-02 13:19:56,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 364. [2023-12-02 13:19:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 336 states have (on average 1.2708333333333333) internal successors, (427), 353 states have internal predecessors, (427), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 13:19:56,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 471 transitions. [2023-12-02 13:19:56,628 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 471 transitions. Word has length 66 [2023-12-02 13:19:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:56,628 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 471 transitions. [2023-12-02 13:19:56,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:19:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 471 transitions. [2023-12-02 13:19:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-02 13:19:56,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:56,630 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-02 13:19:56,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:56,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:56,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:19:56,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 845012136, now seen corresponding path program 1 times [2023-12-02 13:19:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:19:56,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007565014] [2023-12-02 13:19:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:56,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:19:56,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:19:56,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:56,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:57,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:19:57,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:19:57,330 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:19:57,331 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:19:57,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007565014] [2023-12-02 13:19:57,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007565014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:19:57,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:19:57,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:19:57,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768619226] [2023-12-02 13:19:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:19:57,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:19:57,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:19:57,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:19:57,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:19:57,334 INFO L87 Difference]: Start difference. First operand 364 states and 471 transitions. Second operand has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:19:57,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:19:57,456 INFO L93 Difference]: Finished difference Result 366 states and 474 transitions. [2023-12-02 13:19:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:19:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2023-12-02 13:19:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:19:57,459 INFO L225 Difference]: With dead ends: 366 [2023-12-02 13:19:57,460 INFO L226 Difference]: Without dead ends: 366 [2023-12-02 13:19:57,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 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 13:19:57,461 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:19:57,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 995 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:19:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-02 13:19:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2023-12-02 13:19:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 337 states have (on average 1.2729970326409497) internal successors, (429), 355 states have internal predecessors, (429), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-12-02 13:19:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 474 transitions. [2023-12-02 13:19:57,475 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 474 transitions. Word has length 79 [2023-12-02 13:19:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:19:57,476 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 474 transitions. [2023-12-02 13:19:57,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:19:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 474 transitions. [2023-12-02 13:19:57,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-02 13:19:57,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:19:57,478 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] [2023-12-02 13:19:57,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:19:57,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:57,681 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:19:57,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:19:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1457977830, now seen corresponding path program 1 times [2023-12-02 13:19:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:19:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239607643] [2023-12-02 13:19:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:57,682 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 13:19:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:19:57,682 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:57,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:19:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:58,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:19:58,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:19:58,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:19:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:19:58,217 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:19:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239607643] [2023-12-02 13:19:58,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239607643] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:19:58,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1668435124] [2023-12-02 13:19:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:58,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:19:58,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:19:58,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:19:58,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 13:19:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:58,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:19:58,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:58,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:19:58,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:19:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:19:58,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1668435124] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:19:58,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142049796] [2023-12-02 13:19:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:19:58,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:19:58,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:19:58,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:19:58,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:19:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:19:59,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:19:59,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:19:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:19:59,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:19:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:19:59,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142049796] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:19:59,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:19:59,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-12-02 13:19:59,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006825900] [2023-12-02 13:19:59,524 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:19:59,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:19:59,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:19:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:19:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:19:59,526 INFO L87 Difference]: Start difference. First operand 366 states and 474 transitions. Second operand has 11 states, 8 states have (on average 10.625) internal successors, (85), 11 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:20:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:20:00,003 INFO L93 Difference]: Finished difference Result 378 states and 493 transitions. [2023-12-02 13:20:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 13:20:00,005 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 10.625) internal successors, (85), 11 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2023-12-02 13:20:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:20:00,008 INFO L225 Difference]: With dead ends: 378 [2023-12-02 13:20:00,008 INFO L226 Difference]: Without dead ends: 378 [2023-12-02 13:20:00,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-12-02 13:20:00,009 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 18 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:20:00,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1971 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:20:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-02 13:20:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2023-12-02 13:20:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 346 states have (on average 1.2890173410404624) internal successors, (446), 364 states have internal predecessors, (446), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-12-02 13:20:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 491 transitions. [2023-12-02 13:20:00,023 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 491 transitions. Word has length 81 [2023-12-02 13:20:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:20:00,023 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 491 transitions. [2023-12-02 13:20:00,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 10.625) internal successors, (85), 11 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:20:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 491 transitions. [2023-12-02 13:20:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 13:20:00,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:20:00,025 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2023-12-02 13:20:00,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:20:00,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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)] Ended with exit code 0 [2023-12-02 13:20:00,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 13:20:00,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:20:00,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:20:00,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:20:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash -780770392, now seen corresponding path program 2 times [2023-12-02 13:20:00,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:20:00,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684632445] [2023-12-02 13:20:00,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:20:00,628 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 13:20:00,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:20:00,629 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:20:00,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 (11)] Waiting until timeout for monitored process [2023-12-02 13:20:01,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:20:01,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:20:01,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:20:01,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:20:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:20:01,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:20:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:20:01,841 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:20:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684632445] [2023-12-02 13:20:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684632445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:20:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [458416820] [2023-12-02 13:20:01,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:20:01,841 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:20:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:20:01,842 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:20:01,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 13:20:10,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:20:10,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:20:10,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:20:10,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:20:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:20:10,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:20:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:20:10,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [458416820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:20:10,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147236995] [2023-12-02 13:20:10,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:20:10,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:20:10,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:20:10,375 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:20:10,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 13:34:02,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:34:02,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:34:02,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:34:02,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:34:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:34:02,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:34:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:34:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147236995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:34:03,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:34:03,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 22 [2023-12-02 13:34:03,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265394275] [2023-12-02 13:34:03,210 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:34:03,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 13:34:03,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:34:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 13:34:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2023-12-02 13:34:03,212 INFO L87 Difference]: Start difference. First operand 376 states and 491 transitions. Second operand has 22 states, 18 states have (on average 5.333333333333333) internal successors, (96), 22 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:34:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:34:04,650 INFO L93 Difference]: Finished difference Result 395 states and 519 transitions. [2023-12-02 13:34:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 13:34:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 5.333333333333333) internal successors, (96), 22 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2023-12-02 13:34:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:34:04,654 INFO L225 Difference]: With dead ends: 395 [2023-12-02 13:34:04,654 INFO L226 Difference]: Without dead ends: 392 [2023-12-02 13:34:04,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=678, Invalid=1674, Unknown=0, NotChecked=0, Total=2352 [2023-12-02 13:34:04,656 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 34 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 4594 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:34:04,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4594 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:34:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-12-02 13:34:04,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 388. [2023-12-02 13:34:04,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 358 states have (on average 1.2932960893854748) internal successors, (463), 376 states have internal predecessors, (463), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-12-02 13:34:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 508 transitions. [2023-12-02 13:34:04,671 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 508 transitions. Word has length 87 [2023-12-02 13:34:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:34:04,671 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 508 transitions. [2023-12-02 13:34:04,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 5.333333333333333) internal successors, (96), 22 states have internal predecessors, (96), 2 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:34:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 508 transitions. [2023-12-02 13:34:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 13:34:04,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:34:04,673 INFO L195 NwaCegarLoop]: trace histogram [20, 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] [2023-12-02 13:34:04,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 (11)] Ended with exit code 0 [2023-12-02 13:34:04,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 13:34:05,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 13:34:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:34:05,277 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-12-02 13:34:05,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:34:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1440859688, now seen corresponding path program 3 times [2023-12-02 13:34:05,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:34:05,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300732740] [2023-12-02 13:34:05,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:34:05,278 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 13:34:05,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:34:05,279 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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 13:34:05,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/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)] Waiting until timeout for monitored process [2023-12-02 13:34:09,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-02 13:34:09,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:34:09,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:34:09,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:34:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:34:10,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:34:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 122 proven. 55 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 13:34:10,901 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:34:10,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300732740] [2023-12-02 13:34:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300732740] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:34:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1770556824] [2023-12-02 13:34:10,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:34:10,902 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:34:10,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:34:10,903 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:34:10,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b80fbc00-4f65-4a58-be82-620a03baf6f5/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process