./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire --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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:20,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:20,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-23 21:15:20,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:20,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:20,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:20,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:20,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:20,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:20,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:20,802 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:20,803 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:20,804 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:20,806 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:20,807 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:20,807 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:20,807 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:20,808 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:20,808 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:20,809 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:20,810 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:20,810 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:20,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:15:20,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:15:20,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:20,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:20,822 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:20,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:20,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:20,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:20,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:20,824 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:15:20,825 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:15:20,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:20,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:20,825 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:15:20,826 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:15:20,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:20,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:20,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:20,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:20,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:20,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:20,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:20,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:20,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:20,828 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:20,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:20,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:20,829 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:20,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:20,829 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_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2023-11-23 21:15:21,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:21,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:21,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:21,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:21,177 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:21,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2023-11-23 21:15:24,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:24,681 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:24,689 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2023-11-23 21:15:24,719 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data/6615b9b25/1d02d95244ea4163a7bea9b3a6d60896/FLAG9a8ada773 [2023-11-23 21:15:24,732 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data/6615b9b25/1d02d95244ea4163a7bea9b3a6d60896 [2023-11-23 21:15:24,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:24,736 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:24,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:24,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:24,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:24,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:24" (1/1) ... [2023-11-23 21:15:24,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3895e1d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:24, skipping insertion in model container [2023-11-23 21:15:24,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:24" (1/1) ... [2023-11-23 21:15:24,817 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:25,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:25,752 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) [2023-11-23 21:15:25,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bc0ac78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:25, skipping insertion in model container [2023-11-23 21:15:25,758 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:25,759 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-23 21:15:25,762 INFO L158 Benchmark]: Toolchain (without parser) took 1023.97ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 101.5MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:25,762 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:15:25,763 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1021.41ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 101.5MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-23 21:15:25,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 163.6MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1021.41ms. Allocated memory is still 163.6MB. Free memory was 123.1MB in the beginning and 101.5MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire --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 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:28,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:28,479 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-23 21:15:28,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:28,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:28,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:28,538 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:28,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:28,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:28,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:28,546 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:28,546 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:28,546 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:28,548 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:28,549 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:28,549 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:28,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:15:28,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:15:28,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:28,552 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:28,553 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:28,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:28,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:28,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:28,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:28,555 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:15:28,555 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:15:28,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:28,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:28,556 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:15:28,558 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:15:28,558 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:15:28,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:15:28,559 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:28,559 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:28,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:28,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:28,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:15:28,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:28,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:28,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:28,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:28,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:28,562 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:15:28,563 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:15:28,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:28,563 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:28,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:28,563 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_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2023-11-23 21:15:28,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:28,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:28,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:28,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:29,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:29,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2023-11-23 21:15:32,168 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:32,607 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:32,607 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2023-11-23 21:15:32,630 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data/dd48dd47f/6c3215b630ba4d15a432d421ee89e426/FLAG314314087 [2023-11-23 21:15:32,646 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/data/dd48dd47f/6c3215b630ba4d15a432d421ee89e426 [2023-11-23 21:15:32,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:32,650 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:32,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:32,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:32,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:32,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:32" (1/1) ... [2023-11-23 21:15:32,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b23eeae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:32, skipping insertion in model container [2023-11-23 21:15:32,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:32" (1/1) ... [2023-11-23 21:15:32,751 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:33,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:33,794 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 21:15:33,814 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:33,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:33,911 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:34,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:34,081 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:34,089 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:34,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34 WrapperNode [2023-11-23 21:15:34,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:34,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:34,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:34,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:34,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,203 INFO L138 Inliner]: procedures = 285, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1045 [2023-11-23 21:15:34,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:34,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:34,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:34,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:34,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,236 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:34,392 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:34,392 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:34,392 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:34,393 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (1/1) ... [2023-11-23 21:15:34,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:34,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:34,430 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:34,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 21:15:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 21:15:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-23 21:15:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:15:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 21:15:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:15:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 21:15:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:15:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-23 21:15:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-23 21:15:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:15:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:15:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:15:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-23 21:15:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-23 21:15:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-23 21:15:34,500 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-23 21:15:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:34,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:34,754 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:34,757 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:41,378 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:41,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:41,423 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-23 21:15:41,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:41 BoogieIcfgContainer [2023-11-23 21:15:41,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:41,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:41,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:41,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:41,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:32" (1/3) ... [2023-11-23 21:15:41,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3056fd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:41, skipping insertion in model container [2023-11-23 21:15:41,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:34" (2/3) ... [2023-11-23 21:15:41,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3056fd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:41, skipping insertion in model container [2023-11-23 21:15:41,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:41" (3/3) ... [2023-11-23 21:15:41,433 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2023-11-23 21:15:41,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:41,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:15:41,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:41,512 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;@4cb98ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:41,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:15:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 200 states have (on average 1.635) internal successors, (327), 205 states have internal predecessors, (327), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-23 21:15:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:15:41,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:41,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:41,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:15:41,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1518545934, now seen corresponding path program 1 times [2023-11-23 21:15:41,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:41,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990386573] [2023-11-23 21:15:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:41,543 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 [2023-11-23 21:15:41,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:41,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:15:41,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:15:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:41,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:15:41,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:41,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:41,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:41,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:41,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990386573] [2023-11-23 21:15:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990386573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:15:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907461433] [2023-11-23 21:15:41,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:15:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:15:41,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:15:41,914 INFO L87 Difference]: Start difference. First operand has 225 states, 200 states have (on average 1.635) internal successors, (327), 205 states have internal predecessors, (327), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-23 21:15:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:42,031 INFO L93 Difference]: Finished difference Result 220 states and 285 transitions. [2023-11-23 21:15:42,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:15:42,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2023-11-23 21:15:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:42,044 INFO L225 Difference]: With dead ends: 220 [2023-11-23 21:15:42,044 INFO L226 Difference]: Without dead ends: 219 [2023-11-23 21:15:42,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:15:42,050 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:42,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:15:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-23 21:15:42,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-23 21:15:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 196 states have (on average 1.2959183673469388) internal successors, (254), 201 states have internal predecessors, (254), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:15:42,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 284 transitions. [2023-11-23 21:15:42,123 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 284 transitions. Word has length 9 [2023-11-23 21:15:42,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:42,124 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 284 transitions. [2023-11-23 21:15:42,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-11-23 21:15:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 284 transitions. [2023-11-23 21:15:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:15:42,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:42,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:42,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 21:15:42,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:42,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:15:42,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:42,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1131489963, now seen corresponding path program 1 times [2023-11-23 21:15:42,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:42,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469083495] [2023-11-23 21:15:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:42,330 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 [2023-11-23 21:15:42,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:42,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:15:42,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:15:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:42,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:15:42,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:42,687 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:42,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:42,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469083495] [2023-11-23 21:15:42,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469083495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:42,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:42,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:42,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145713922] [2023-11-23 21:15:42,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:42,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:42,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:42,695 INFO L87 Difference]: Start difference. First operand 219 states and 284 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-23 21:15:45,664 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 [] [2023-11-23 21:15:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:49,393 INFO L93 Difference]: Finished difference Result 341 states and 445 transitions. [2023-11-23 21:15:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:15:49,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2023-11-23 21:15:49,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:49,399 INFO L225 Difference]: With dead ends: 341 [2023-11-23 21:15:49,399 INFO L226 Difference]: Without dead ends: 341 [2023-11-23 21:15:49,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:49,401 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 155 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:49,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 734 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 21:15:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-11-23 21:15:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 329. [2023-11-23 21:15:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 306 states have (on average 1.303921568627451) internal successors, (399), 311 states have internal predecessors, (399), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:15:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 429 transitions. [2023-11-23 21:15:49,433 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 429 transitions. Word has length 11 [2023-11-23 21:15:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:49,434 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 429 transitions. [2023-11-23 21:15:49,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-23 21:15:49,434 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 429 transitions. [2023-11-23 21:15:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:15:49,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:49,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:49,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:15:49,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:49,638 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:15:49,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2059992344, now seen corresponding path program 1 times [2023-11-23 21:15:49,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:49,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80266736] [2023-11-23 21:15:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:49,640 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 [2023-11-23 21:15:49,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:49,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:15:49,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:15:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:49,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:15:49,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:15:49,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:15:49,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-11-23 21:15:49,924 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:15:49,925 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:15:49,925 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:15:49,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 39 [2023-11-23 21:15:49,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:15:49,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-23 21:15:50,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:15:50,036 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 [2023-11-23 21:15:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:50,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:15:50,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:15:50,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80266736] [2023-11-23 21:15:50,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80266736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:50,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:50,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:50,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071684430] [2023-11-23 21:15:50,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:50,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:50,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:15:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:50,063 INFO L87 Difference]: Start difference. First operand 329 states and 429 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:54,614 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 [] [2023-11-23 21:15:59,516 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 [] [2023-11-23 21:15:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:59,577 INFO L93 Difference]: Finished difference Result 427 states and 563 transitions. [2023-11-23 21:15:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:59,578 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-23 21:15:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:59,581 INFO L225 Difference]: With dead ends: 427 [2023-11-23 21:15:59,581 INFO L226 Difference]: Without dead ends: 427 [2023-11-23 21:15:59,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:15:59,583 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 153 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:59,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 701 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2023-11-23 21:15:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2023-11-23 21:15:59,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 328. [2023-11-23 21:15:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 305 states have (on average 1.301639344262295) internal successors, (397), 310 states have internal predecessors, (397), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:15:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2023-11-23 21:15:59,638 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 14 [2023-11-23 21:15:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:59,639 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2023-11-23 21:15:59,639 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2023-11-23 21:15:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:15:59,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:59,641 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] [2023-11-23 21:15:59,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:15:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:15:59,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:15:59,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 518278030, now seen corresponding path program 1 times [2023-11-23 21:15:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:15:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219009423] [2023-11-23 21:15:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:59,848 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 [2023-11-23 21:15:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:15:59,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:15:59,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:16:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:00,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:16:00,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:00,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:00,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219009423] [2023-11-23 21:16:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219009423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:00,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:00,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:16:00,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813966936] [2023-11-23 21:16:00,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:00,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:00,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:00,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:00,245 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-23 21:16:00,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:00,486 INFO L93 Difference]: Finished difference Result 336 states and 419 transitions. [2023-11-23 21:16:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:00,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 48 [2023-11-23 21:16:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:00,490 INFO L225 Difference]: With dead ends: 336 [2023-11-23 21:16:00,490 INFO L226 Difference]: Without dead ends: 336 [2023-11-23 21:16:00,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:16:00,492 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 36 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:00,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 720 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-11-23 21:16:00,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2023-11-23 21:16:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 311 states have (on average 1.2443729903536977) internal successors, (387), 316 states have internal predecessors, (387), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:16:00,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 417 transitions. [2023-11-23 21:16:00,511 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 417 transitions. Word has length 48 [2023-11-23 21:16:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:00,512 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 417 transitions. [2023-11-23 21:16:00,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2023-11-23 21:16:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 417 transitions. [2023-11-23 21:16:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-23 21:16:00,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:00,514 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] [2023-11-23 21:16:00,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:00,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:16:00,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:16:00,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:00,733 INFO L85 PathProgramCache]: Analyzing trace with hash 972862082, now seen corresponding path program 1 times [2023-11-23 21:16:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:00,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699422375] [2023-11-23 21:16:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:00,734 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 [2023-11-23 21:16:00,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:00,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:16:00,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:16:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:01,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:16:01,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:01,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:01,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699422375] [2023-11-23 21:16:01,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699422375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:01,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:01,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:16:01,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451503166] [2023-11-23 21:16:01,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:01,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:16:01,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:01,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:16:01,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:16:01,184 INFO L87 Difference]: Start difference. First operand 334 states and 417 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:16:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:01,490 INFO L93 Difference]: Finished difference Result 343 states and 426 transitions. [2023-11-23 21:16:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:16:01,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 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 48 [2023-11-23 21:16:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:01,494 INFO L225 Difference]: With dead ends: 343 [2023-11-23 21:16:01,494 INFO L226 Difference]: Without dead ends: 343 [2023-11-23 21:16:01,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:16:01,496 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 11 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:01,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1300 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:01,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-23 21:16:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-23 21:16:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 317 states have (on average 1.2429022082018928) internal successors, (394), 323 states have internal predecessors, (394), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 21:16:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 426 transitions. [2023-11-23 21:16:01,513 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 426 transitions. Word has length 48 [2023-11-23 21:16:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:01,514 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 426 transitions. [2023-11-23 21:16:01,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:16:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 426 transitions. [2023-11-23 21:16:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:16:01,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:01,517 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:16:01,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:01,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:16:01,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:16:01,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:01,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1058188914, now seen corresponding path program 1 times [2023-11-23 21:16:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37523529] [2023-11-23 21:16:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:01,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:16:01,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:01,727 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:16:01,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:16:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:02,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:16:02,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:02,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:02,506 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:02,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37523529] [2023-11-23 21:16:02,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37523529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:02,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:02,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:16:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735534091] [2023-11-23 21:16:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:02,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:16:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:16:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:16:02,510 INFO L87 Difference]: Start difference. First operand 343 states and 426 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-23 21:16:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:03,065 INFO L93 Difference]: Finished difference Result 349 states and 434 transitions. [2023-11-23 21:16:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:16:03,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 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 60 [2023-11-23 21:16:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:03,070 INFO L225 Difference]: With dead ends: 349 [2023-11-23 21:16:03,071 INFO L226 Difference]: Without dead ends: 349 [2023-11-23 21:16:03,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:16:03,075 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 17 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:03,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1173 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:16:03,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-23 21:16:03,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 346. [2023-11-23 21:16:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 318 states have (on average 1.2421383647798743) internal successors, (395), 325 states have internal predecessors, (395), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-23 21:16:03,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 430 transitions. [2023-11-23 21:16:03,099 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 430 transitions. Word has length 60 [2023-11-23 21:16:03,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:03,101 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 430 transitions. [2023-11-23 21:16:03,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 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) [2023-11-23 21:16:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 430 transitions. [2023-11-23 21:16:03,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:16:03,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:03,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:03,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:16:03,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:16:03,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:16:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash -356355389, now seen corresponding path program 1 times [2023-11-23 21:16:03,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:03,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824509666] [2023-11-23 21:16:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:03,315 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 [2023-11-23 21:16:03,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:03,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:16:03,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:16:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:03,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:16:03,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:03,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:03,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:03,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824509666] [2023-11-23 21:16:03,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824509666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:03,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:03,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:16:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642807980] [2023-11-23 21:16:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:03,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:03,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:03,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:03,900 INFO L87 Difference]: Start difference. First operand 346 states and 430 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:16:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:04,056 INFO L93 Difference]: Finished difference Result 348 states and 433 transitions. [2023-11-23 21:16:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:04,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 65 [2023-11-23 21:16:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:04,061 INFO L225 Difference]: With dead ends: 348 [2023-11-23 21:16:04,061 INFO L226 Difference]: Without dead ends: 348 [2023-11-23 21:16:04,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:04,063 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:04,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 784 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:16:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-23 21:16:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2023-11-23 21:16:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 319 states have (on average 1.244514106583072) internal successors, (397), 327 states have internal predecessors, (397), 19 states have call successors, (19), 7 states have call predecessors, (19), 8 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2023-11-23 21:16:04,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 433 transitions. [2023-11-23 21:16:04,080 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 433 transitions. Word has length 65 [2023-11-23 21:16:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:04,080 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 433 transitions. [2023-11-23 21:16:04,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-23 21:16:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 433 transitions. [2023-11-23 21:16:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 21:16:04,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:04,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:04,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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 [2023-11-23 21:16:04,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:16:04,290 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:16:04,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:04,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1848689150, now seen corresponding path program 1 times [2023-11-23 21:16:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:04,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648885327] [2023-11-23 21:16:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:04,292 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 [2023-11-23 21:16:04,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:04,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:16:04,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 21:16:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:04,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:16:04,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:04,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:05,155 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:05,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648885327] [2023-11-23 21:16:05,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648885327] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [172544504] [2023-11-23 21:16:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:05,162 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:05,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:16:05,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:16:05,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-11-23 21:16:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:05,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:16:05,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:16:06,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:16:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [172544504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:06,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528988104] [2023-11-23 21:16:06,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:06,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:06,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:06,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:06,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:16:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:07,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:16:07,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:16:07,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:16:07,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528988104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:07,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-11-23 21:16:07,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 7, 7] total 18 [2023-11-23 21:16:07,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354148315] [2023-11-23 21:16:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:07,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:07,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:07,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:16:07,261 INFO L87 Difference]: Start difference. First operand 348 states and 433 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:07,716 INFO L93 Difference]: Finished difference Result 918 states and 1160 transitions. [2023-11-23 21:16:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2023-11-23 21:16:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:07,724 INFO L225 Difference]: With dead ends: 918 [2023-11-23 21:16:07,724 INFO L226 Difference]: Without dead ends: 918 [2023-11-23 21:16:07,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:16:07,727 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 500 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:07,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1381 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:16:07,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2023-11-23 21:16:07,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 862. [2023-11-23 21:16:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 810 states have (on average 1.2617283950617284) internal successors, (1022), 821 states have internal predecessors, (1022), 33 states have call successors, (33), 13 states have call predecessors, (33), 17 states have return successors, (35), 27 states have call predecessors, (35), 29 states have call successors, (35) [2023-11-23 21:16:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1090 transitions. [2023-11-23 21:16:07,771 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1090 transitions. Word has length 66 [2023-11-23 21:16:07,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:07,772 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1090 transitions. [2023-11-23 21:16:07,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:16:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1090 transitions. [2023-11-23 21:16:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 21:16:07,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:07,775 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:07,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:08,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:08,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:08,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:16:08,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-23 21:16:08,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:08,401 INFO L85 PathProgramCache]: Analyzing trace with hash -140202331, now seen corresponding path program 1 times [2023-11-23 21:16:08,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:16:08,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638988144] [2023-11-23 21:16:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:08,402 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 [2023-11-23 21:16:08,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:16:08,403 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -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) [2023-11-23 21:16:08,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-23 21:16:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:09,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 21:16:09,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:16:09,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:16:09,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:16:09,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638988144] [2023-11-23 21:16:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638988144] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:09,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2120860512] [2023-11-23 21:16:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:09,352 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:16:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:16:09,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:16:09,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-11-23 21:16:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:10,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:16:10,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:16:10,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:16:11,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2120860512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551438777] [2023-11-23 21:16:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:11,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:11,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:11,559 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:11,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32d033a4-f77d-4b70-996c-5ca694286d54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:16:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:12,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 21:16:12,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:16:12,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:16:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551438777] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:12,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-23 21:16:12,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8, 10, 8, 7] total 23 [2023-11-23 21:16:12,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668310548] [2023-11-23 21:16:12,878 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-23 21:16:12,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 21:16:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:16:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 21:16:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:16:12,883 INFO L87 Difference]: Start difference. First operand 862 states and 1090 transitions. Second operand has 23 states, 21 states have (on average 10.571428571428571) internal successors, (222), 20 states have internal predecessors, (222), 11 states have call successors, (24), 8 states have call predecessors, (24), 11 states have return successors, (22), 9 states have call predecessors, (22), 11 states have call successors, (22)