./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91 --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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:04,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:04,689 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2023-11-24 23:16:04,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:04,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:04,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:04,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:04,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:04,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:04,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:04,762 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:04,762 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:04,763 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:04,765 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:16:04,765 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:04,766 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:04,766 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:16:04,767 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:16:04,767 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:04,768 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:16:04,768 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:16:04,769 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:16:04,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:16:04,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:16:04,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:04,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:04,773 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:16:04,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:04,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:16:04,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:04,776 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:04,776 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:16:04,776 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:16:04,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:04,777 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:04,777 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:16:04,778 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:16:04,778 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:16:04,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:04,778 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:04,779 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:04,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:04,780 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:04,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:04,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:04,781 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:04,781 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:16:04,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:16:04,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:04,782 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:04,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:04,783 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_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2023-11-24 23:16:05,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:05,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:05,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:05,169 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:05,169 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:05,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-24 23:16:08,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:08,846 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:08,847 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-24 23:16:08,873 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data/3036768aa/c2fee241fe57494894e2157b65e0ff4b/FLAGa8d888e07 [2023-11-24 23:16:08,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data/3036768aa/c2fee241fe57494894e2157b65e0ff4b [2023-11-24 23:16:08,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:08,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:08,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:08,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:08,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:08,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:08,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286a2622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:08, skipping insertion in model container [2023-11-24 23:16:08,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:08" (1/1) ... [2023-11-24 23:16:09,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:09,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:09,792 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) [2023-11-24 23:16:09,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55e05ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:09, skipping insertion in model container [2023-11-24 23:16:09,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:09,795 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:16:09,798 INFO L158 Benchmark]: Toolchain (without parser) took 899.64ms. Allocated memory is still 161.5MB. Free memory was 127.3MB in the beginning and 106.5MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:16:09,799 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:16:09,801 INFO L158 Benchmark]: CACSL2BoogieTranslator took 896.31ms. Allocated memory is still 161.5MB. Free memory was 126.7MB in the beginning and 106.5MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 23:16:09,803 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 896.31ms. Allocated memory is still 161.5MB. Free memory was 126.7MB in the beginning and 106.5MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91 --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 fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:16:12,453 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:16:12,568 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2023-11-24 23:16:12,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:16:12,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:16:12,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:16:12,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:16:12,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:16:12,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:16:12,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:16:12,644 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:16:12,644 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:16:12,645 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:16:12,647 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:16:12,647 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:16:12,648 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:16:12,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:16:12,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:16:12,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:16:12,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:16:12,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:16:12,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:16:12,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:16:12,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:16:12,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:16:12,654 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:16:12,655 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:16:12,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:16:12,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:16:12,656 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:16:12,658 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:16:12,658 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:16:12,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:16:12,659 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:16:12,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:16:12,659 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:16:12,660 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:16:12,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:16:12,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:16:12,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:16:12,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:12,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:16:12,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:16:12,663 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:16:12,664 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:16:12,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:16:12,664 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:16:12,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:16:12,665 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_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe37ed55d149c65fede95413b0b499314c3ede2b9eb9a49f03115ea64cafc68c [2023-11-24 23:16:13,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:16:13,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:16:13,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:16:13,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:16:13,119 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:16:13,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-24 23:16:16,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:16:16,826 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:16:16,827 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-2.i [2023-11-24 23:16:16,848 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data/9589e7dc6/2d72c608e6d642b8881a311f009974da/FLAGcaf4740e8 [2023-11-24 23:16:16,865 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/data/9589e7dc6/2d72c608e6d642b8881a311f009974da [2023-11-24 23:16:16,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:16:16,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:16:16,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:16,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:16:16,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:16:16,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:16" (1/1) ... [2023-11-24 23:16:16,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6fa50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:16, skipping insertion in model container [2023-11-24 23:16:16,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:16:16" (1/1) ... [2023-11-24 23:16:16,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:17,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:17,541 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:16:17,573 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:16:17,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:17,788 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:16:17,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:16:17,925 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:16:17,933 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:16:17,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17 WrapperNode [2023-11-24 23:16:17,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:16:17,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:17,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:16:17,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:16:17,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:17,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,053 INFO L138 Inliner]: procedures = 180, calls = 350, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1160 [2023-11-24 23:16:18,057 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:16:18,057 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:16:18,058 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:16:18,058 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:16:18,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,102 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:16:18,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:16:18,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:16:18,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:16:18,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (1/1) ... [2023-11-24 23:16:18,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:16:18,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:18,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:16:18,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:16:18,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:16:18,341 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:16:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:16:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:16:18,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:16:18,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:16:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:16:18,342 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:16:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2023-11-24 23:16:18,342 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2023-11-24 23:16:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:16:18,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:16:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:16:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:16:18,343 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:16:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:16:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:16:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:16:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:16:18,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:16:18,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:16:18,641 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:16:18,644 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:16:25,767 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:16:25,810 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:16:25,811 INFO L309 CfgBuilder]: Removed 71 assume(true) statements. [2023-11-24 23:16:25,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:25 BoogieIcfgContainer [2023-11-24 23:16:25,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:16:25,814 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:16:25,814 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:16:25,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:16:25,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:16:16" (1/3) ... [2023-11-24 23:16:25,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1846374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:25, skipping insertion in model container [2023-11-24 23:16:25,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:16:17" (2/3) ... [2023-11-24 23:16:25,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1846374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:16:25, skipping insertion in model container [2023-11-24 23:16:25,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:16:25" (3/3) ... [2023-11-24 23:16:25,821 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-2.i [2023-11-24 23:16:25,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:16:25,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:16:25,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:16:25,928 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;@6fc0d159, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:16:25,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:16:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 262 states, 233 states have (on average 1.6824034334763949) internal successors, (392), 252 states have internal predecessors, (392), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-24 23:16:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:16:25,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:25,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:25,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:25,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash -845347131, now seen corresponding path program 1 times [2023-11-24 23:16:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926089098] [2023-11-24 23:16:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:25,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:16:25,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:25,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:25,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:26,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-24 23:16:26,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:26,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:26,286 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926089098] [2023-11-24 23:16:26,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926089098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:26,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:26,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:26,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773963060] [2023-11-24 23:16:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:26,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 23:16:26,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:16:26,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 23:16:26,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:16:26,330 INFO L87 Difference]: Start difference. First operand has 262 states, 233 states have (on average 1.6824034334763949) internal successors, (392), 252 states have internal predecessors, (392), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:26,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:26,408 INFO L93 Difference]: Finished difference Result 260 states and 356 transitions. [2023-11-24 23:16:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 23:16:26,413 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-24 23:16:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:26,426 INFO L225 Difference]: With dead ends: 260 [2023-11-24 23:16:26,426 INFO L226 Difference]: Without dead ends: 259 [2023-11-24 23:16:26,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 23:16:26,432 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:26,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 350 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 23:16:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-11-24 23:16:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2023-11-24 23:16:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 232 states have (on average 1.3491379310344827) internal successors, (313), 249 states have internal predecessors, (313), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 23:16:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 355 transitions. [2023-11-24 23:16:26,500 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 355 transitions. Word has length 10 [2023-11-24 23:16:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:26,501 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 355 transitions. [2023-11-24 23:16:26,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 355 transitions. [2023-11-24 23:16:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:16:26,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:26,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:26,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:16:26,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:26,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2004107571, now seen corresponding path program 1 times [2023-11-24 23:16:26,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916510882] [2023-11-24 23:16:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:26,708 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 [2023-11-24 23:16:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:26,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:26,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:26,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:16:26,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:27,054 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:27,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:27,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 23:16:27,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-11-24 23:16:27,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 23:16:27,179 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 [2023-11-24 23:16:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:27,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:27,212 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916510882] [2023-11-24 23:16:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916510882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:27,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:16:27,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076464312] [2023-11-24 23:16:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:16:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:27,216 INFO L87 Difference]: Start difference. First operand 259 states and 355 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:31,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:33,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:37,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 23:16:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:37,472 INFO L93 Difference]: Finished difference Result 402 states and 545 transitions. [2023-11-24 23:16:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:37,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-24 23:16:37,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:37,478 INFO L225 Difference]: With dead ends: 402 [2023-11-24 23:16:37,478 INFO L226 Difference]: Without dead ends: 402 [2023-11-24 23:16:37,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:37,481 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 175 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:37,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 917 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2023-11-24 23:16:37,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-24 23:16:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 261. [2023-11-24 23:16:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 234 states have (on average 1.3461538461538463) internal successors, (315), 251 states have internal predecessors, (315), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 23:16:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 357 transitions. [2023-11-24 23:16:37,509 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 357 transitions. Word has length 12 [2023-11-24 23:16:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:37,510 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 357 transitions. [2023-11-24 23:16:37,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 357 transitions. [2023-11-24 23:16:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:16:37,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:37,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:37,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:37,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:16:37,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:37,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:37,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1970640049, now seen corresponding path program 1 times [2023-11-24 23:16:37,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:37,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485275629] [2023-11-24 23:16:37,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:37,720 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 [2023-11-24 23:16:37,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:37,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:37,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:38,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:38,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:38,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:38,260 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:38,261 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:38,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485275629] [2023-11-24 23:16:38,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485275629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:38,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:38,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:16:38,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315913770] [2023-11-24 23:16:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:16:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:38,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:38,264 INFO L87 Difference]: Start difference. First operand 261 states and 357 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:38,471 INFO L93 Difference]: Finished difference Result 265 states and 353 transitions. [2023-11-24 23:16:38,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:38,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-24 23:16:38,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:38,474 INFO L225 Difference]: With dead ends: 265 [2023-11-24 23:16:38,474 INFO L226 Difference]: Without dead ends: 265 [2023-11-24 23:16:38,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:38,476 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 37 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:38,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 938 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 23:16:38,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-24 23:16:38,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2023-11-24 23:16:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 237 states have (on average 1.3080168776371308) internal successors, (310), 254 states have internal predecessors, (310), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 23:16:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 352 transitions. [2023-11-24 23:16:38,497 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 352 transitions. Word has length 66 [2023-11-24 23:16:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:38,498 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 352 transitions. [2023-11-24 23:16:38,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:38,498 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 352 transitions. [2023-11-24 23:16:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:16:38,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:38,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:38,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:38,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:16:38,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:38,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:38,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1992526653, now seen corresponding path program 1 times [2023-11-24 23:16:38,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:38,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053961382] [2023-11-24 23:16:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:38,711 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 [2023-11-24 23:16:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:38,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:38,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:39,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:16:39,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:39,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:39,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:39,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053961382] [2023-11-24 23:16:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053961382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:39,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:39,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 23:16:39,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052677992] [2023-11-24 23:16:39,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:39,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 23:16:39,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:16:39,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 23:16:39,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:39,377 INFO L87 Difference]: Start difference. First operand 264 states and 352 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:39,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:39,538 INFO L93 Difference]: Finished difference Result 258 states and 342 transitions. [2023-11-24 23:16:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-24 23:16:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:39,541 INFO L225 Difference]: With dead ends: 258 [2023-11-24 23:16:39,541 INFO L226 Difference]: Without dead ends: 258 [2023-11-24 23:16:39,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:39,543 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 5 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:39,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 937 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:16:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-24 23:16:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2023-11-24 23:16:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 231 states have (on average 1.2987012987012987) internal successors, (300), 248 states have internal predecessors, (300), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-24 23:16:39,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 342 transitions. [2023-11-24 23:16:39,558 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 342 transitions. Word has length 66 [2023-11-24 23:16:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:39,559 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 342 transitions. [2023-11-24 23:16:39,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 342 transitions. [2023-11-24 23:16:39,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-24 23:16:39,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:39,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:39,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:39,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:16:39,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:39,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1598159867, now seen corresponding path program 1 times [2023-11-24 23:16:39,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:39,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334292106] [2023-11-24 23:16:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:39,773 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 [2023-11-24 23:16:39,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:39,774 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:39,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:40,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:40,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:40,574 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:40,575 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:40,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334292106] [2023-11-24 23:16:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334292106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:40,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:40,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:16:40,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635023376] [2023-11-24 23:16:40,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:40,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:16:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:16:40,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:16:40,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:40,578 INFO L87 Difference]: Start difference. First operand 258 states and 342 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:41,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:41,704 INFO L93 Difference]: Finished difference Result 396 states and 512 transitions. [2023-11-24 23:16:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:16:41,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-24 23:16:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:41,708 INFO L225 Difference]: With dead ends: 396 [2023-11-24 23:16:41,709 INFO L226 Difference]: Without dead ends: 396 [2023-11-24 23:16:41,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:16:41,710 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 132 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:41,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 665 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-24 23:16:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2023-11-24 23:16:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 364. [2023-11-24 23:16:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 336 states have (on average 1.2708333333333333) internal successors, (427), 353 states have internal predecessors, (427), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-24 23:16:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 471 transitions. [2023-11-24 23:16:41,727 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 471 transitions. Word has length 66 [2023-11-24 23:16:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:41,727 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 471 transitions. [2023-11-24 23:16:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 23:16:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 471 transitions. [2023-11-24 23:16:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-24 23:16:41,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:41,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:41,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:41,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:16:41,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:41,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash 845012136, now seen corresponding path program 1 times [2023-11-24 23:16:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233822149] [2023-11-24 23:16:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:41,942 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 [2023-11-24 23:16:41,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:41,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:41,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:42,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:16:42,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:16:42,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:16:42,637 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:42,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233822149] [2023-11-24 23:16:42,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233822149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:16:42,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:16:42,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:16:42,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886355787] [2023-11-24 23:16:42,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:16:42,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:16:42,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:16:42,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:16:42,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:16:42,641 INFO L87 Difference]: Start difference. First operand 364 states and 471 transitions. Second operand has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:16:42,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:42,776 INFO L93 Difference]: Finished difference Result 366 states and 474 transitions. [2023-11-24 23:16:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:16:42,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2023-11-24 23:16:42,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:42,780 INFO L225 Difference]: With dead ends: 366 [2023-11-24 23:16:42,781 INFO L226 Difference]: Without dead ends: 366 [2023-11-24 23:16:42,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:16:42,782 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:42,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 995 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 23:16:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-24 23:16:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2023-11-24 23:16:42,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 337 states have (on average 1.2729970326409497) internal successors, (429), 355 states have internal predecessors, (429), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-24 23:16:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 474 transitions. [2023-11-24 23:16:42,797 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 474 transitions. Word has length 79 [2023-11-24 23:16:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:42,798 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 474 transitions. [2023-11-24 23:16:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 23:16:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 474 transitions. [2023-11-24 23:16:42,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-24 23:16:42,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:42,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:42,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:43,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:16:43,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:43,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:43,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1457977830, now seen corresponding path program 1 times [2023-11-24 23:16:43,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:43,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30224701] [2023-11-24 23:16:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:43,019 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 [2023-11-24 23:16:43,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:43,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:43,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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 [2023-11-24 23:16:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:43,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:16:43,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:43,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:16:43,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30224701] [2023-11-24 23:16:43,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30224701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [196831009] [2023-11-24 23:16:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:43,864 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:16:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:16:43,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:16:43,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-11-24 23:16:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:44,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:16:44,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:16:44,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:16:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [196831009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328814285] [2023-11-24 23:16:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:16:44,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:44,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:44,840 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:44,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 23:16:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:16:45,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:16:45,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:16:45,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:16:45,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328814285] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:45,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-24 23:16:45,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2023-11-24 23:16:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612398870] [2023-11-24 23:16:45,619 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-24 23:16:45,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 23:16:45,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:16:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 23:16:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-24 23:16:45,622 INFO L87 Difference]: Start difference. First operand 366 states and 474 transitions. Second operand has 11 states, 8 states have (on average 10.625) internal successors, (85), 11 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:16:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:16:46,189 INFO L93 Difference]: Finished difference Result 378 states and 493 transitions. [2023-11-24 23:16:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-24 23:16:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 10.625) internal successors, (85), 11 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2023-11-24 23:16:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:16:46,194 INFO L225 Difference]: With dead ends: 378 [2023-11-24 23:16:46,194 INFO L226 Difference]: Without dead ends: 378 [2023-11-24 23:16:46,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2023-11-24 23:16:46,195 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 18 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 23:16:46,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1971 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 23:16:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-24 23:16:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2023-11-24 23:16:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 346 states have (on average 1.2890173410404624) internal successors, (446), 364 states have internal predecessors, (446), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2023-11-24 23:16:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 491 transitions. [2023-11-24 23:16:46,210 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 491 transitions. Word has length 81 [2023-11-24 23:16:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:16:46,211 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 491 transitions. [2023-11-24 23:16:46,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 10.625) internal successors, (85), 11 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 23:16:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 491 transitions. [2023-11-24 23:16:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-24 23:16:46,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:16:46,213 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:16:46,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-11-24 23:16:46,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:46,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 23:16:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:46,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 23:16:46,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:16:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash -780770392, now seen corresponding path program 2 times [2023-11-24 23:16:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:16:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796933357] [2023-11-24 23:16:46,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:16:46,826 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 [2023-11-24 23:16:46,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:16:46,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -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) [2023-11-24 23:16:46,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-24 23:16:47,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:16:47,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:16:47,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:16:47,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:16:48,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:16:48,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:16:48,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796933357] [2023-11-24 23:16:48,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796933357] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:48,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1021466798] [2023-11-24 23:16:48,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:16:48,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:16:48,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 [2023-11-24 23:16:48,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:16:48,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-11-24 23:16:59,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 23:16:59,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 23:16:59,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 23:16:59,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:16:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-24 23:16:59,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:16:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-24 23:16:59,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1021466798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:16:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790221758] [2023-11-24 23:16:59,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 23:16:59,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:16:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:16:59,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:16:59,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5b221b1-4d3a-4a7e-9f74-56762d697231/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process